x402 Trust Prober
payment-ready until 2026-10-31
Deterministic trust scoring and monitoring for the x402 ecosystem. 88k+ endpoints tracked 24/7 on Base + Solana: probe reliability, latency, spec compliance, price history, and real on-chain USDC settlement per endpoint.
Call it x402 v2
x402 v2
- Base URL
- https://x402.fuchss.app
- Payment
- x402 v2, header channel
$ curl -i 'https://x402.fuchss.app/v1/similar' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 10 paid routes on x402.fuchss.app
GET/v1/similar Base$0.005since 07-25
GET/v1/watch-endpoint-30d Base$0.20since 07-25
GET/v1/x402-history Base$0.02since 07-25
GET/v1/x402-payment-trace Base$0.011673since 07-25
GET/v1/x402-trust Base$0.005since 07-25
GET/v1/x402-trust-bulk-10 Base$0.045since 07-25
GET/v1/x402-trust-bulk-100 Base$0.325since 07-25
GET/v1/x402-trust-bulk-200 Base$0.40since 07-25
2 more in Example 402 response
Prices as captured in the 402 response: median $0.1225 across the 10 endpoints.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| GET | / | Semantically similar endpoints that currently out-score a given one on the trust score. Each carries score, grade, similarity, advertised price, and endpoint page; same-host siblings and avoid-flagged endpoints are excluded. An empty list means nothing beats the subject. | $0.005 | Base | USDC | header | since 07-25 |
| GET | / | Monitor one endpoint for 30 days: alerts on payTo, price, asset or network changes, 402-spec regressions, delisting, and liveness. Push to signed HTTPS webhooks or Slack/Discord URLs (max 5 each), all connection-tested before payment. Returns a one-time bearer secret; edit URLs or cancel early via bearer-authed PATCH/DELETE /v1/watch/{id}, or poll the append-only event log. | $0.20 | Base | USDC | header | since 07-25 |
| GET | / | Raw observation history for one endpoint over 1-90 days: listing and delisting events, price and payTo changes, and probe results with status and latency. Excluded probes (rate limits, unresolved URL templates, our own resolver outages) never count as downtime. probeSummary aggregates the window. | $0.02 | Base | USDC | header | since 07-25 |
| GET | / | No description | $0.011673 | Base | USDC | header | since 07-25 |
| GET | / | Trust score (0-100, grade A-F) for any x402 endpoint, cataloged or not: 30d uptime, 402-envelope compliance, latency, age, real on-chain USDC settlement volume, and price stability, with a full auditable breakdown. Uncataloged endpoints are live-probed on first query and auto-adopted. Know before you pay. | $0.005 | Base | USDC | header | since 07-25 |
| GET | / | Score up to 10 x402 endpoints in a single paid call. Each found result carries the FULL trust report · identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats · not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed · for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored. | $0.045 | Base | USDC | header | since 07-25 |
| GET | / | Score up to 100 x402 endpoints in a single paid call. Each found result carries the FULL trust report · identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats · not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed · for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored. | $0.325 | Base | USDC | header | since 07-25 |
| GET | / | Score up to 200 x402 endpoints in a single paid call. Each found result carries the FULL trust report · identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats · not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed · for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored. | $0.40 | Base | USDC | header | since 07-25 |
| GET | / | Score up to 50 x402 endpoints in a single paid call. Each found result carries the FULL trust report · identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats · not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed · for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored. | $0.20 | Base | USDC | header | since 07-25 |
| GET | / | Score up to 500 x402 endpoints in a single paid call. Each found result carries the FULL trust report · identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats · not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed · for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored. | $0.50 | Base | USDC | header | since 07-25 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 10 payloads captured by the monitor.
297 lines, scroll inside
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"resource": {
"type": "string",
"required": true,
"description": "Full x402 resource URL exactly as listed in discovery (e.g. https://api.example.com/v1/thing)."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"flags": "array",
"grade": "string",
"score": "number",
"stats": "object",
"resource": "string",
"breakdown": "object",
"confidence": "number"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/x402-trust",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "Trust score (0-100, grade A-F) for any publicly listed x402 endpoint. Unlike uptime-only checkers, we return ECONOMIC PROOF: the REAL on-chain USDC settlement volume and distinct-payer count for the endpoint's payTo address — is anyone actually paying it, or is it just live? Computed deterministically from continuous monitoring: 30d probe uptime, 402-envelope spec compliance, latency, observed age, on-chain settlement activity, and advertised-price stability. Includes a full component breakdown, machine-readable flags, and an honest observedDays (we report only the history we actually have, with dataCompleteSince marking our gap-free on-chain coverage). Know before you pay.",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"resource": "https://api.example.com/v1/thing"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"flags": [],
"grade": "A",
"score": 87.4,
"stats": {
"payTo": "0xabc…123",
"delisted": false,
"probes30d": 1440,
"probeOk30d": 1427,
"avgLatencyMs": 312,
"observedDays": 5,
"settlements30d": 18234,
"distinctPayers30d": 96,
"settledVolumeUnits30d": "364680000"
},
"resource": "https://api.example.com/v1/thing",
"breakdown": {
"uptime": 0.99,
"latency": 0.91,
"observedAge": 0.6,
"priceStability": 1,
"envelopeCompliance": 1,
"settlementActivity": 0.74
},
"confidence": 0.82,
"description": "Provider-advertised description of the endpoint (unverified claim).",
"serviceName": "Example Thing API",
"dataCompleteSince": 1748736000000
}
}
},
"tags": [
"x402",
"trust",
"score",
"monitoring",
"reliability"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"resource"
],
"properties": {
"resource": {
"type": "string"
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"resource",
"serviceName",
"description",
"score",
"grade",
"confidence",
"breakdown",
"flags",
"dataCompleteSince",
"stats"
],
"properties": {
"flags": {
"type": "array"
},
"grade": {
"type": "string"
},
"score": {
"type": "number"
},
"stats": {
"type": "object",
"required": [
"observedDays",
"probes30d",
"probeOk30d",
"avgLatencyMs",
"payTo",
"settlements30d",
"distinctPayers30d",
"settledVolumeUnits30d",
"delisted"
],
"properties": {
"payTo": {
"type": "string"
},
"delisted": {
"type": "boolean"
},
"probes30d": {
"type": "integer"
},
"probeOk30d": {
"type": "integer"
},
"avgLatencyMs": {
"type": "integer"
},
"observedDays": {
"type": "integer"
},
"settlements30d": {
"type": "integer"
},
"distinctPayers30d": {
"type": "integer"
},
"settledVolumeUnits30d": {
"type": "string"
}
}
},
"resource": {
"type": "string"
},
"breakdown": {
"type": "object",
"required": [
"uptime",
"envelopeCompliance",
"latency",
"observedAge",
"settlementActivity",
"priceStability"
],
"properties": {
"uptime": {
"type": "number"
},
"latency": {
"type": "number"
},
"observedAge": {
"type": "number"
},
"priceStability": {
"type": "integer"
},
"envelopeCompliance": {
"type": "integer"
},
"settlementActivity": {
"type": "number"
}
}
},
"confidence": {
"type": "number"
},
"description": {
"type": "string"
},
"serviceName": {
"type": "string"
},
"dataCompleteSince": {
"type": "integer"
}
}
}
}
}
}
},
"category": "data",
"discoverable": true
}
},
"x402Version": 2
} Other captured 402 responses (9)
Captured payload 2 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "45000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"resources": {
"type": "array",
"required": true,
"description": "List of full x402 resource URLs (https://...) to score. Max = tier size; fewer is allowed; duplicates are ignored."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"flags": "array | undefined",
"found": "boolean",
"grade": "string | undefined",
"score": "number | undefined",
"stats": "object | undefined",
"pending": "boolean | undefined",
"resource": "string",
"breakdown": "object | undefined",
"freshness": "object | undefined",
"probed_at": "number | undefined",
"subscores": "object | undefined",
"templated": "boolean | undefined",
"advertised": "object | null | undefined",
"confidence": "number | undefined",
"probes_30d": "number | undefined",
"recomputed": "boolean | undefined",
"scoreRange": "object | undefined",
"computed_at": "number | undefined",
"description": "string | null | undefined",
"endpoint_id": "number | undefined",
"serviceName": "string | null | undefined",
"explanations": "array | undefined",
"flagsDetailed": "array | undefined",
"recommendation": "string | undefined",
"gradeThresholds": "object | undefined",
"confidenceDetail": "object | undefined",
"dataCompleteSince": "number | null | undefined"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/x402-trust-bulk-10",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "Score up to 10 x402 endpoints in a single paid call. Each found result carries the FULL trust report — identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats — not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed — for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored.",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"resources": [
"https://api.example.com/v1/thing"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tier": 10,
"results": [
{
"flags": [],
"found": true,
"grade": "A",
"score": 87.4,
"stats": {
"payTo": "0x1111111111111111111111111111111111111111",
"delisted": false,
"probes30d": 144,
"payToStale": false,
"probeOk30d": 143,
"firstSeenTs": 1748707200000,
"avgLatencyMs": 210,
"observedDays": 30,
"latencyVantage": "measured from a single EU vantage point; includes network round-trip distance to the endpoint",
"settlements30d": 52,
"payToLastSeenTs": 1751299100000,
"payToSharedWith": 0,
"priceChanges30d": 0,
"settlementAsset": "USDC",
"envelopeValid30d": 144,
"distinctPayers30d": 14,
"settlementDecimals": 6,
"settledVolumeUsd30d": 5.2,
"settledVolumeUnits30d": "5200000"
},
"resource": "https://api.example.com/v1/thing",
"breakdown": {
"age": 0.7,
"uptime": 0.99,
"latency": 0.85,
"activity": 0.6,
"stability": 1,
"compliance": 1
},
"freshness": {
"live": false,
"ageSeconds": 100,
"probedAtTs": 1751299100000
},
"probed_at": 1751299100000,
"subscores": {
"economicConfidence": 0.6,
"specComplianceScore": 100,
"economicReputationScore": 71,
"technicalReliabilityScore": 92
},
"templated": false,
"advertised": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"network": "eip155:8453",
"decimals": 6,
"amountUsd": 0.01,
"observedAtTs": 1751299100000
},
"confidence": 0.82,
"probes_30d": 144,
"recomputed": true,
"scoreRange": {
"low": 82.1,
"high": 90,
"point": 87.4
},
"computed_at": 1751299200000,
"description": "Returns a thing.",
"endpoint_id": 123,
"serviceName": "Example Thing API",
"explanations": [
"High uptime over 144 probes.",
"Consistent 402 envelope compliance."
],
"flagsDetailed": [],
"recommendation": "proceed",
"gradeThresholds": {
"A": 80,
"B": 65,
"C": 50,
"D": 35,
"F": 0
},
"confidenceDetail": {
"overall": 0.82,
"economic": 0.6,
"observation": 0.9
},
"dataCompleteSince": 1748707200000
},
{
"found": false,
"grade": null,
"score": null,
"resource": "https://api.unknown.example/v1/missing",
"probed_at": null,
"confidence": null,
"probes_30d": null,
"recomputed": false,
"computed_at": null,
"endpoint_id": null,
"recommendation": null
}
],
"requested": 2,
"generated_at": 1751299200000,
"recomputed_ms": 420,
"recomputed_count": 1,
"recompute_limit_hit": false
}
}
},
"tags": [
"x402",
"trust",
"bulk",
"score",
"routing"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"resources"
],
"properties": {
"resources": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"generated_at",
"tier",
"requested",
"recomputed_count",
"recomputed_ms",
"recompute_limit_hit",
"results"
],
"properties": {
"tier": {
"type": "integer"
},
"results": {
"type": "array",
"items": {
"type": "object",
"required": [
"resource",
"found",
"endpoint_id",
"score",
"grade",
"recommendation",
"confidence",
"probes_30d",
"probed_at",
"computed_at",
"recomputed"
],
"properties": {
"flags": {
"type": "array"
},
"found": {
"type": "boolean"
},
"grade": {
"type": [
"null",
"string"
]
},
"score": {
"type": [
"null",
"number"
]
},
"stats": {
"type": "object",
"required": [
"firstSeenTs",
"observedDays",
"probes30d",
"probeOk30d",
"envelopeValid30d",
"avgLatencyMs",
"latencyVantage",
"priceChanges30d",
"payTo",
"payToLastSeenTs",
"payToStale",
"payToSharedWith",
"settlements30d",
"distinctPayers30d",
"settledVolumeUnits30d",
"settledVolumeUsd30d",
"settlementAsset",
"settlementDecimals",
"delisted"
],
"properties": {
"payTo": {
"type": "string"
},
"delisted": {
"type": "boolean"
},
"probes30d": {
"type": "integer"
},
"payToStale": {
"type": "boolean"
},
"probeOk30d": {
"type": "integer"
},
"firstSeenTs": {
"type": "integer"
},
"avgLatencyMs": {
"type": "integer"
},
"observedDays": {
"type": "integer"
},
"latencyVantage": {
"type": "string"
},
"settlements30d": {
"type": "integer"
},
"payToLastSeenTs": {
"type": "integer"
},
"payToSharedWith": {
"type": "integer"
},
"priceChanges30d": {
"type": "integer"
},
"settlementAsset": {
"type": "string"
},
"envelopeValid30d": {
"type": "integer"
},
"distinctPayers30d": {
"type": "integer"
},
"settlementDecimals": {
"type": "integer"
},
"settledVolumeUsd30d": {
"type": "number"
},
"settledVolumeUnits30d": {
"type": "string"
}
}
},
"resource": {
"type": "string"
},
"breakdown": {
"type": "object",
"required": [
"uptime",
"compliance",
"latency",
"age",
"activity",
"stability"
],
"properties": {
"age": {
"type": "number"
},
"uptime": {
"type": "number"
},
"latency": {
"type": "number"
},
"activity": {
"type": "number"
},
"stability": {
"type": "integer"
},
"compliance": {
"type": "integer"
}
}
},
"freshness": {
"type": "object",
"required": [
"live",
"probedAtTs",
"ageSeconds"
],
"properties": {
"live": {
"type": "boolean"
},
"ageSeconds": {
"type": "integer"
},
"probedAtTs": {
"type": "integer"
}
}
},
"probed_at": {
"type": [
"integer",
"null"
]
},
"subscores": {
"type": "object",
"required": [
"technicalReliabilityScore",
"specComplianceScore",
"economicReputationScore",
"economicConfidence"
],
"properties": {
"economicConfidence": {
"type": "number"
},
"specComplianceScore": {
"type": "integer"
},
"economicReputationScore": {
"type": "integer"
},
"technicalReliabilityScore": {
"type": "integer"
}
}
},
"templated": {
"type": "boolean"
},
"advertised": {
"type": "object",
"required": [
"amount",
"amountUsd",
"asset",
"network",
"decimals",
"observedAtTs"
],
"properties": {
"asset": {
"type": "string"
},
"amount": {
"type": "string"
},
"network": {
"type": "string"
},
"decimals": {
"type": "integer"
},
"amountUsd": {
"type": "number"
},
"observedAtTs": {
"type": "integer"
}
}
},
"confidence": {
"type": [
"null",
"number"
]
},
"probes_30d": {
"type": [
"integer",
"null"
]
},
"recomputed": {
"type": "boolean"
},
"scoreRange": {
"type": "object",
"required": [
"low",
"point",
"high"
],
"properties": {
"low": {
"type": "number"
},
"high": {
"type": "integer"
},
"point": {
"type": "number"
}
}
},
"computed_at": {
"type": [
"integer",
"null"
]
},
"description": {
"type": "string"
},
"endpoint_id": {
"type": [
"integer",
"null"
]
},
"serviceName": {
"type": "string"
},
"explanations": {
"type": "array",
"items": {
"type": "string"
}
},
"flagsDetailed": {
"type": "array"
},
"recommendation": {
"type": [
"null",
"string"
]
},
"gradeThresholds": {
"type": "object",
"required": [
"A",
"B",
"C",
"D",
"F"
],
"properties": {
"A": {
"type": "integer"
},
"B": {
"type": "integer"
},
"C": {
"type": "integer"
},
"D": {
"type": "integer"
},
"F": {
"type": "integer"
}
}
},
"confidenceDetail": {
"type": "object",
"required": [
"overall",
"observation",
"economic"
],
"properties": {
"overall": {
"type": "number"
},
"economic": {
"type": "number"
},
"observation": {
"type": "number"
}
}
},
"dataCompleteSince": {
"type": "integer"
}
}
}
},
"requested": {
"type": "integer"
},
"generated_at": {
"type": "integer"
},
"recomputed_ms": {
"type": "integer"
},
"recomputed_count": {
"type": "integer"
},
"recompute_limit_hit": {
"type": "boolean"
}
}
}
}
}
}
},
"category": "data",
"discoverable": true
}
},
"x402Version": 2
}Captured payload 3 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "200000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"resources": {
"type": "array",
"required": true,
"description": "List of full x402 resource URLs (https://...) to score. Max = tier size; fewer is allowed; duplicates are ignored."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"flags": "array | undefined",
"found": "boolean",
"grade": "string | undefined",
"score": "number | undefined",
"stats": "object | undefined",
"pending": "boolean | undefined",
"resource": "string",
"breakdown": "object | undefined",
"freshness": "object | undefined",
"probed_at": "number | undefined",
"subscores": "object | undefined",
"templated": "boolean | undefined",
"advertised": "object | null | undefined",
"confidence": "number | undefined",
"probes_30d": "number | undefined",
"recomputed": "boolean | undefined",
"scoreRange": "object | undefined",
"computed_at": "number | undefined",
"description": "string | null | undefined",
"endpoint_id": "number | undefined",
"serviceName": "string | null | undefined",
"explanations": "array | undefined",
"flagsDetailed": "array | undefined",
"recommendation": "string | undefined",
"gradeThresholds": "object | undefined",
"confidenceDetail": "object | undefined",
"dataCompleteSince": "number | null | undefined"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/x402-trust-bulk-50",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "Score up to 50 x402 endpoints in a single paid call. Each found result carries the FULL trust report — identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats — not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed — for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored.",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"resources": [
"https://api.example.com/v1/thing"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tier": 10,
"results": [
{
"flags": [],
"found": true,
"grade": "A",
"score": 87.4,
"stats": {
"payTo": "0x1111111111111111111111111111111111111111",
"delisted": false,
"probes30d": 144,
"payToStale": false,
"probeOk30d": 143,
"firstSeenTs": 1748707200000,
"avgLatencyMs": 210,
"observedDays": 30,
"latencyVantage": "measured from a single EU vantage point; includes network round-trip distance to the endpoint",
"settlements30d": 52,
"payToLastSeenTs": 1751299100000,
"payToSharedWith": 0,
"priceChanges30d": 0,
"settlementAsset": "USDC",
"envelopeValid30d": 144,
"distinctPayers30d": 14,
"settlementDecimals": 6,
"settledVolumeUsd30d": 5.2,
"settledVolumeUnits30d": "5200000"
},
"resource": "https://api.example.com/v1/thing",
"breakdown": {
"age": 0.7,
"uptime": 0.99,
"latency": 0.85,
"activity": 0.6,
"stability": 1,
"compliance": 1
},
"freshness": {
"live": false,
"ageSeconds": 100,
"probedAtTs": 1751299100000
},
"probed_at": 1751299100000,
"subscores": {
"economicConfidence": 0.6,
"specComplianceScore": 100,
"economicReputationScore": 71,
"technicalReliabilityScore": 92
},
"templated": false,
"advertised": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"network": "eip155:8453",
"decimals": 6,
"amountUsd": 0.01,
"observedAtTs": 1751299100000
},
"confidence": 0.82,
"probes_30d": 144,
"recomputed": true,
"scoreRange": {
"low": 82.1,
"high": 90,
"point": 87.4
},
"computed_at": 1751299200000,
"description": "Returns a thing.",
"endpoint_id": 123,
"serviceName": "Example Thing API",
"explanations": [
"High uptime over 144 probes.",
"Consistent 402 envelope compliance."
],
"flagsDetailed": [],
"recommendation": "proceed",
"gradeThresholds": {
"A": 80,
"B": 65,
"C": 50,
"D": 35,
"F": 0
},
"confidenceDetail": {
"overall": 0.82,
"economic": 0.6,
"observation": 0.9
},
"dataCompleteSince": 1748707200000
},
{
"found": false,
"grade": null,
"score": null,
"resource": "https://api.unknown.example/v1/missing",
"probed_at": null,
"confidence": null,
"probes_30d": null,
"recomputed": false,
"computed_at": null,
"endpoint_id": null,
"recommendation": null
}
],
"requested": 2,
"generated_at": 1751299200000,
"recomputed_ms": 420,
"recomputed_count": 1,
"recompute_limit_hit": false
}
}
},
"tags": [
"x402",
"trust",
"bulk",
"score",
"routing"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"resources"
],
"properties": {
"resources": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"generated_at",
"tier",
"requested",
"recomputed_count",
"recomputed_ms",
"recompute_limit_hit",
"results"
],
"properties": {
"tier": {
"type": "integer"
},
"results": {
"type": "array",
"items": {
"type": "object",
"required": [
"resource",
"found",
"endpoint_id",
"score",
"grade",
"recommendation",
"confidence",
"probes_30d",
"probed_at",
"computed_at",
"recomputed"
],
"properties": {
"flags": {
"type": "array"
},
"found": {
"type": "boolean"
},
"grade": {
"type": [
"null",
"string"
]
},
"score": {
"type": [
"null",
"number"
]
},
"stats": {
"type": "object",
"required": [
"firstSeenTs",
"observedDays",
"probes30d",
"probeOk30d",
"envelopeValid30d",
"avgLatencyMs",
"latencyVantage",
"priceChanges30d",
"payTo",
"payToLastSeenTs",
"payToStale",
"payToSharedWith",
"settlements30d",
"distinctPayers30d",
"settledVolumeUnits30d",
"settledVolumeUsd30d",
"settlementAsset",
"settlementDecimals",
"delisted"
],
"properties": {
"payTo": {
"type": "string"
},
"delisted": {
"type": "boolean"
},
"probes30d": {
"type": "integer"
},
"payToStale": {
"type": "boolean"
},
"probeOk30d": {
"type": "integer"
},
"firstSeenTs": {
"type": "integer"
},
"avgLatencyMs": {
"type": "integer"
},
"observedDays": {
"type": "integer"
},
"latencyVantage": {
"type": "string"
},
"settlements30d": {
"type": "integer"
},
"payToLastSeenTs": {
"type": "integer"
},
"payToSharedWith": {
"type": "integer"
},
"priceChanges30d": {
"type": "integer"
},
"settlementAsset": {
"type": "string"
},
"envelopeValid30d": {
"type": "integer"
},
"distinctPayers30d": {
"type": "integer"
},
"settlementDecimals": {
"type": "integer"
},
"settledVolumeUsd30d": {
"type": "number"
},
"settledVolumeUnits30d": {
"type": "string"
}
}
},
"resource": {
"type": "string"
},
"breakdown": {
"type": "object",
"required": [
"uptime",
"compliance",
"latency",
"age",
"activity",
"stability"
],
"properties": {
"age": {
"type": "number"
},
"uptime": {
"type": "number"
},
"latency": {
"type": "number"
},
"activity": {
"type": "number"
},
"stability": {
"type": "integer"
},
"compliance": {
"type": "integer"
}
}
},
"freshness": {
"type": "object",
"required": [
"live",
"probedAtTs",
"ageSeconds"
],
"properties": {
"live": {
"type": "boolean"
},
"ageSeconds": {
"type": "integer"
},
"probedAtTs": {
"type": "integer"
}
}
},
"probed_at": {
"type": [
"integer",
"null"
]
},
"subscores": {
"type": "object",
"required": [
"technicalReliabilityScore",
"specComplianceScore",
"economicReputationScore",
"economicConfidence"
],
"properties": {
"economicConfidence": {
"type": "number"
},
"specComplianceScore": {
"type": "integer"
},
"economicReputationScore": {
"type": "integer"
},
"technicalReliabilityScore": {
"type": "integer"
}
}
},
"templated": {
"type": "boolean"
},
"advertised": {
"type": "object",
"required": [
"amount",
"amountUsd",
"asset",
"network",
"decimals",
"observedAtTs"
],
"properties": {
"asset": {
"type": "string"
},
"amount": {
"type": "string"
},
"network": {
"type": "string"
},
"decimals": {
"type": "integer"
},
"amountUsd": {
"type": "number"
},
"observedAtTs": {
"type": "integer"
}
}
},
"confidence": {
"type": [
"null",
"number"
]
},
"probes_30d": {
"type": [
"integer",
"null"
]
},
"recomputed": {
"type": "boolean"
},
"scoreRange": {
"type": "object",
"required": [
"low",
"point",
"high"
],
"properties": {
"low": {
"type": "number"
},
"high": {
"type": "integer"
},
"point": {
"type": "number"
}
}
},
"computed_at": {
"type": [
"integer",
"null"
]
},
"description": {
"type": "string"
},
"endpoint_id": {
"type": [
"integer",
"null"
]
},
"serviceName": {
"type": "string"
},
"explanations": {
"type": "array",
"items": {
"type": "string"
}
},
"flagsDetailed": {
"type": "array"
},
"recommendation": {
"type": [
"null",
"string"
]
},
"gradeThresholds": {
"type": "object",
"required": [
"A",
"B",
"C",
"D",
"F"
],
"properties": {
"A": {
"type": "integer"
},
"B": {
"type": "integer"
},
"C": {
"type": "integer"
},
"D": {
"type": "integer"
},
"F": {
"type": "integer"
}
}
},
"confidenceDetail": {
"type": "object",
"required": [
"overall",
"observation",
"economic"
],
"properties": {
"overall": {
"type": "number"
},
"economic": {
"type": "number"
},
"observation": {
"type": "number"
}
}
},
"dataCompleteSince": {
"type": "integer"
}
}
}
},
"requested": {
"type": "integer"
},
"generated_at": {
"type": "integer"
},
"recomputed_ms": {
"type": "integer"
},
"recomputed_count": {
"type": "integer"
},
"recompute_limit_hit": {
"type": "boolean"
}
}
}
}
}
}
},
"category": "data",
"discoverable": true
}
},
"x402Version": 2
}Captured payload 4 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "325000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"resources": {
"type": "array",
"required": true,
"description": "List of full x402 resource URLs (https://...) to score. Max = tier size; fewer is allowed; duplicates are ignored."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"flags": "array | undefined",
"found": "boolean",
"grade": "string | undefined",
"score": "number | undefined",
"stats": "object | undefined",
"pending": "boolean | undefined",
"resource": "string",
"breakdown": "object | undefined",
"freshness": "object | undefined",
"probed_at": "number | undefined",
"subscores": "object | undefined",
"templated": "boolean | undefined",
"advertised": "object | null | undefined",
"confidence": "number | undefined",
"probes_30d": "number | undefined",
"recomputed": "boolean | undefined",
"scoreRange": "object | undefined",
"computed_at": "number | undefined",
"description": "string | null | undefined",
"endpoint_id": "number | undefined",
"serviceName": "string | null | undefined",
"explanations": "array | undefined",
"flagsDetailed": "array | undefined",
"recommendation": "string | undefined",
"gradeThresholds": "object | undefined",
"confidenceDetail": "object | undefined",
"dataCompleteSince": "number | null | undefined"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/x402-trust-bulk-100",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "Score up to 100 x402 endpoints in a single paid call. Each found result carries the FULL trust report — identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats — not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed — for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored.",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"resources": [
"https://api.example.com/v1/thing"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tier": 10,
"results": [
{
"flags": [],
"found": true,
"grade": "A",
"score": 87.4,
"stats": {
"payTo": "0x1111111111111111111111111111111111111111",
"delisted": false,
"probes30d": 144,
"payToStale": false,
"probeOk30d": 143,
"firstSeenTs": 1748707200000,
"avgLatencyMs": 210,
"observedDays": 30,
"latencyVantage": "measured from a single EU vantage point; includes network round-trip distance to the endpoint",
"settlements30d": 52,
"payToLastSeenTs": 1751299100000,
"payToSharedWith": 0,
"priceChanges30d": 0,
"settlementAsset": "USDC",
"envelopeValid30d": 144,
"distinctPayers30d": 14,
"settlementDecimals": 6,
"settledVolumeUsd30d": 5.2,
"settledVolumeUnits30d": "5200000"
},
"resource": "https://api.example.com/v1/thing",
"breakdown": {
"age": 0.7,
"uptime": 0.99,
"latency": 0.85,
"activity": 0.6,
"stability": 1,
"compliance": 1
},
"freshness": {
"live": false,
"ageSeconds": 100,
"probedAtTs": 1751299100000
},
"probed_at": 1751299100000,
"subscores": {
"economicConfidence": 0.6,
"specComplianceScore": 100,
"economicReputationScore": 71,
"technicalReliabilityScore": 92
},
"templated": false,
"advertised": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"network": "eip155:8453",
"decimals": 6,
"amountUsd": 0.01,
"observedAtTs": 1751299100000
},
"confidence": 0.82,
"probes_30d": 144,
"recomputed": true,
"scoreRange": {
"low": 82.1,
"high": 90,
"point": 87.4
},
"computed_at": 1751299200000,
"description": "Returns a thing.",
"endpoint_id": 123,
"serviceName": "Example Thing API",
"explanations": [
"High uptime over 144 probes.",
"Consistent 402 envelope compliance."
],
"flagsDetailed": [],
"recommendation": "proceed",
"gradeThresholds": {
"A": 80,
"B": 65,
"C": 50,
"D": 35,
"F": 0
},
"confidenceDetail": {
"overall": 0.82,
"economic": 0.6,
"observation": 0.9
},
"dataCompleteSince": 1748707200000
},
{
"found": false,
"grade": null,
"score": null,
"resource": "https://api.unknown.example/v1/missing",
"probed_at": null,
"confidence": null,
"probes_30d": null,
"recomputed": false,
"computed_at": null,
"endpoint_id": null,
"recommendation": null
}
],
"requested": 2,
"generated_at": 1751299200000,
"recomputed_ms": 420,
"recomputed_count": 1,
"recompute_limit_hit": false
}
}
},
"tags": [
"x402",
"trust",
"bulk",
"score",
"routing"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"resources"
],
"properties": {
"resources": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"generated_at",
"tier",
"requested",
"recomputed_count",
"recomputed_ms",
"recompute_limit_hit",
"results"
],
"properties": {
"tier": {
"type": "integer"
},
"results": {
"type": "array",
"items": {
"type": "object",
"required": [
"resource",
"found",
"endpoint_id",
"score",
"grade",
"recommendation",
"confidence",
"probes_30d",
"probed_at",
"computed_at",
"recomputed"
],
"properties": {
"flags": {
"type": "array"
},
"found": {
"type": "boolean"
},
"grade": {
"type": [
"null",
"string"
]
},
"score": {
"type": [
"null",
"number"
]
},
"stats": {
"type": "object",
"required": [
"firstSeenTs",
"observedDays",
"probes30d",
"probeOk30d",
"envelopeValid30d",
"avgLatencyMs",
"latencyVantage",
"priceChanges30d",
"payTo",
"payToLastSeenTs",
"payToStale",
"payToSharedWith",
"settlements30d",
"distinctPayers30d",
"settledVolumeUnits30d",
"settledVolumeUsd30d",
"settlementAsset",
"settlementDecimals",
"delisted"
],
"properties": {
"payTo": {
"type": "string"
},
"delisted": {
"type": "boolean"
},
"probes30d": {
"type": "integer"
},
"payToStale": {
"type": "boolean"
},
"probeOk30d": {
"type": "integer"
},
"firstSeenTs": {
"type": "integer"
},
"avgLatencyMs": {
"type": "integer"
},
"observedDays": {
"type": "integer"
},
"latencyVantage": {
"type": "string"
},
"settlements30d": {
"type": "integer"
},
"payToLastSeenTs": {
"type": "integer"
},
"payToSharedWith": {
"type": "integer"
},
"priceChanges30d": {
"type": "integer"
},
"settlementAsset": {
"type": "string"
},
"envelopeValid30d": {
"type": "integer"
},
"distinctPayers30d": {
"type": "integer"
},
"settlementDecimals": {
"type": "integer"
},
"settledVolumeUsd30d": {
"type": "number"
},
"settledVolumeUnits30d": {
"type": "string"
}
}
},
"resource": {
"type": "string"
},
"breakdown": {
"type": "object",
"required": [
"uptime",
"compliance",
"latency",
"age",
"activity",
"stability"
],
"properties": {
"age": {
"type": "number"
},
"uptime": {
"type": "number"
},
"latency": {
"type": "number"
},
"activity": {
"type": "number"
},
"stability": {
"type": "integer"
},
"compliance": {
"type": "integer"
}
}
},
"freshness": {
"type": "object",
"required": [
"live",
"probedAtTs",
"ageSeconds"
],
"properties": {
"live": {
"type": "boolean"
},
"ageSeconds": {
"type": "integer"
},
"probedAtTs": {
"type": "integer"
}
}
},
"probed_at": {
"type": [
"integer",
"null"
]
},
"subscores": {
"type": "object",
"required": [
"technicalReliabilityScore",
"specComplianceScore",
"economicReputationScore",
"economicConfidence"
],
"properties": {
"economicConfidence": {
"type": "number"
},
"specComplianceScore": {
"type": "integer"
},
"economicReputationScore": {
"type": "integer"
},
"technicalReliabilityScore": {
"type": "integer"
}
}
},
"templated": {
"type": "boolean"
},
"advertised": {
"type": "object",
"required": [
"amount",
"amountUsd",
"asset",
"network",
"decimals",
"observedAtTs"
],
"properties": {
"asset": {
"type": "string"
},
"amount": {
"type": "string"
},
"network": {
"type": "string"
},
"decimals": {
"type": "integer"
},
"amountUsd": {
"type": "number"
},
"observedAtTs": {
"type": "integer"
}
}
},
"confidence": {
"type": [
"null",
"number"
]
},
"probes_30d": {
"type": [
"integer",
"null"
]
},
"recomputed": {
"type": "boolean"
},
"scoreRange": {
"type": "object",
"required": [
"low",
"point",
"high"
],
"properties": {
"low": {
"type": "number"
},
"high": {
"type": "integer"
},
"point": {
"type": "number"
}
}
},
"computed_at": {
"type": [
"integer",
"null"
]
},
"description": {
"type": "string"
},
"endpoint_id": {
"type": [
"integer",
"null"
]
},
"serviceName": {
"type": "string"
},
"explanations": {
"type": "array",
"items": {
"type": "string"
}
},
"flagsDetailed": {
"type": "array"
},
"recommendation": {
"type": [
"null",
"string"
]
},
"gradeThresholds": {
"type": "object",
"required": [
"A",
"B",
"C",
"D",
"F"
],
"properties": {
"A": {
"type": "integer"
},
"B": {
"type": "integer"
},
"C": {
"type": "integer"
},
"D": {
"type": "integer"
},
"F": {
"type": "integer"
}
}
},
"confidenceDetail": {
"type": "object",
"required": [
"overall",
"observation",
"economic"
],
"properties": {
"overall": {
"type": "number"
},
"economic": {
"type": "number"
},
"observation": {
"type": "number"
}
}
},
"dataCompleteSince": {
"type": "integer"
}
}
}
},
"requested": {
"type": "integer"
},
"generated_at": {
"type": "integer"
},
"recomputed_ms": {
"type": "integer"
},
"recomputed_count": {
"type": "integer"
},
"recompute_limit_hit": {
"type": "boolean"
}
}
}
}
}
}
},
"category": "data",
"discoverable": true
}
},
"x402Version": 2
}Captured payload 5 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "400000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"resources": {
"type": "array",
"required": true,
"description": "List of full x402 resource URLs (https://...) to score. Max = tier size; fewer is allowed; duplicates are ignored."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"flags": "array | undefined",
"found": "boolean",
"grade": "string | undefined",
"score": "number | undefined",
"stats": "object | undefined",
"pending": "boolean | undefined",
"resource": "string",
"breakdown": "object | undefined",
"freshness": "object | undefined",
"probed_at": "number | undefined",
"subscores": "object | undefined",
"templated": "boolean | undefined",
"advertised": "object | null | undefined",
"confidence": "number | undefined",
"probes_30d": "number | undefined",
"recomputed": "boolean | undefined",
"scoreRange": "object | undefined",
"computed_at": "number | undefined",
"description": "string | null | undefined",
"endpoint_id": "number | undefined",
"serviceName": "string | null | undefined",
"explanations": "array | undefined",
"flagsDetailed": "array | undefined",
"recommendation": "string | undefined",
"gradeThresholds": "object | undefined",
"confidenceDetail": "object | undefined",
"dataCompleteSince": "number | null | undefined"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/x402-trust-bulk-200",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "Score up to 200 x402 endpoints in a single paid call. Each found result carries the FULL trust report — identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats — not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed — for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored.",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"resources": [
"https://api.example.com/v1/thing"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tier": 10,
"results": [
{
"flags": [],
"found": true,
"grade": "A",
"score": 87.4,
"stats": {
"payTo": "0x1111111111111111111111111111111111111111",
"delisted": false,
"probes30d": 144,
"payToStale": false,
"probeOk30d": 143,
"firstSeenTs": 1748707200000,
"avgLatencyMs": 210,
"observedDays": 30,
"latencyVantage": "measured from a single EU vantage point; includes network round-trip distance to the endpoint",
"settlements30d": 52,
"payToLastSeenTs": 1751299100000,
"payToSharedWith": 0,
"priceChanges30d": 0,
"settlementAsset": "USDC",
"envelopeValid30d": 144,
"distinctPayers30d": 14,
"settlementDecimals": 6,
"settledVolumeUsd30d": 5.2,
"settledVolumeUnits30d": "5200000"
},
"resource": "https://api.example.com/v1/thing",
"breakdown": {
"age": 0.7,
"uptime": 0.99,
"latency": 0.85,
"activity": 0.6,
"stability": 1,
"compliance": 1
},
"freshness": {
"live": false,
"ageSeconds": 100,
"probedAtTs": 1751299100000
},
"probed_at": 1751299100000,
"subscores": {
"economicConfidence": 0.6,
"specComplianceScore": 100,
"economicReputationScore": 71,
"technicalReliabilityScore": 92
},
"templated": false,
"advertised": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"network": "eip155:8453",
"decimals": 6,
"amountUsd": 0.01,
"observedAtTs": 1751299100000
},
"confidence": 0.82,
"probes_30d": 144,
"recomputed": true,
"scoreRange": {
"low": 82.1,
"high": 90,
"point": 87.4
},
"computed_at": 1751299200000,
"description": "Returns a thing.",
"endpoint_id": 123,
"serviceName": "Example Thing API",
"explanations": [
"High uptime over 144 probes.",
"Consistent 402 envelope compliance."
],
"flagsDetailed": [],
"recommendation": "proceed",
"gradeThresholds": {
"A": 80,
"B": 65,
"C": 50,
"D": 35,
"F": 0
},
"confidenceDetail": {
"overall": 0.82,
"economic": 0.6,
"observation": 0.9
},
"dataCompleteSince": 1748707200000
},
{
"found": false,
"grade": null,
"score": null,
"resource": "https://api.unknown.example/v1/missing",
"probed_at": null,
"confidence": null,
"probes_30d": null,
"recomputed": false,
"computed_at": null,
"endpoint_id": null,
"recommendation": null
}
],
"requested": 2,
"generated_at": 1751299200000,
"recomputed_ms": 420,
"recomputed_count": 1,
"recompute_limit_hit": false
}
}
},
"tags": [
"x402",
"trust",
"bulk",
"score",
"routing"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"resources"
],
"properties": {
"resources": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"generated_at",
"tier",
"requested",
"recomputed_count",
"recomputed_ms",
"recompute_limit_hit",
"results"
],
"properties": {
"tier": {
"type": "integer"
},
"results": {
"type": "array",
"items": {
"type": "object",
"required": [
"resource",
"found",
"endpoint_id",
"score",
"grade",
"recommendation",
"confidence",
"probes_30d",
"probed_at",
"computed_at",
"recomputed"
],
"properties": {
"flags": {
"type": "array"
},
"found": {
"type": "boolean"
},
"grade": {
"type": [
"null",
"string"
]
},
"score": {
"type": [
"null",
"number"
]
},
"stats": {
"type": "object",
"required": [
"firstSeenTs",
"observedDays",
"probes30d",
"probeOk30d",
"envelopeValid30d",
"avgLatencyMs",
"latencyVantage",
"priceChanges30d",
"payTo",
"payToLastSeenTs",
"payToStale",
"payToSharedWith",
"settlements30d",
"distinctPayers30d",
"settledVolumeUnits30d",
"settledVolumeUsd30d",
"settlementAsset",
"settlementDecimals",
"delisted"
],
"properties": {
"payTo": {
"type": "string"
},
"delisted": {
"type": "boolean"
},
"probes30d": {
"type": "integer"
},
"payToStale": {
"type": "boolean"
},
"probeOk30d": {
"type": "integer"
},
"firstSeenTs": {
"type": "integer"
},
"avgLatencyMs": {
"type": "integer"
},
"observedDays": {
"type": "integer"
},
"latencyVantage": {
"type": "string"
},
"settlements30d": {
"type": "integer"
},
"payToLastSeenTs": {
"type": "integer"
},
"payToSharedWith": {
"type": "integer"
},
"priceChanges30d": {
"type": "integer"
},
"settlementAsset": {
"type": "string"
},
"envelopeValid30d": {
"type": "integer"
},
"distinctPayers30d": {
"type": "integer"
},
"settlementDecimals": {
"type": "integer"
},
"settledVolumeUsd30d": {
"type": "number"
},
"settledVolumeUnits30d": {
"type": "string"
}
}
},
"resource": {
"type": "string"
},
"breakdown": {
"type": "object",
"required": [
"uptime",
"compliance",
"latency",
"age",
"activity",
"stability"
],
"properties": {
"age": {
"type": "number"
},
"uptime": {
"type": "number"
},
"latency": {
"type": "number"
},
"activity": {
"type": "number"
},
"stability": {
"type": "integer"
},
"compliance": {
"type": "integer"
}
}
},
"freshness": {
"type": "object",
"required": [
"live",
"probedAtTs",
"ageSeconds"
],
"properties": {
"live": {
"type": "boolean"
},
"ageSeconds": {
"type": "integer"
},
"probedAtTs": {
"type": "integer"
}
}
},
"probed_at": {
"type": [
"integer",
"null"
]
},
"subscores": {
"type": "object",
"required": [
"technicalReliabilityScore",
"specComplianceScore",
"economicReputationScore",
"economicConfidence"
],
"properties": {
"economicConfidence": {
"type": "number"
},
"specComplianceScore": {
"type": "integer"
},
"economicReputationScore": {
"type": "integer"
},
"technicalReliabilityScore": {
"type": "integer"
}
}
},
"templated": {
"type": "boolean"
},
"advertised": {
"type": "object",
"required": [
"amount",
"amountUsd",
"asset",
"network",
"decimals",
"observedAtTs"
],
"properties": {
"asset": {
"type": "string"
},
"amount": {
"type": "string"
},
"network": {
"type": "string"
},
"decimals": {
"type": "integer"
},
"amountUsd": {
"type": "number"
},
"observedAtTs": {
"type": "integer"
}
}
},
"confidence": {
"type": [
"null",
"number"
]
},
"probes_30d": {
"type": [
"integer",
"null"
]
},
"recomputed": {
"type": "boolean"
},
"scoreRange": {
"type": "object",
"required": [
"low",
"point",
"high"
],
"properties": {
"low": {
"type": "number"
},
"high": {
"type": "integer"
},
"point": {
"type": "number"
}
}
},
"computed_at": {
"type": [
"integer",
"null"
]
},
"description": {
"type": "string"
},
"endpoint_id": {
"type": [
"integer",
"null"
]
},
"serviceName": {
"type": "string"
},
"explanations": {
"type": "array",
"items": {
"type": "string"
}
},
"flagsDetailed": {
"type": "array"
},
"recommendation": {
"type": [
"null",
"string"
]
},
"gradeThresholds": {
"type": "object",
"required": [
"A",
"B",
"C",
"D",
"F"
],
"properties": {
"A": {
"type": "integer"
},
"B": {
"type": "integer"
},
"C": {
"type": "integer"
},
"D": {
"type": "integer"
},
"F": {
"type": "integer"
}
}
},
"confidenceDetail": {
"type": "object",
"required": [
"overall",
"observation",
"economic"
],
"properties": {
"overall": {
"type": "number"
},
"economic": {
"type": "number"
},
"observation": {
"type": "number"
}
}
},
"dataCompleteSince": {
"type": "integer"
}
}
}
},
"requested": {
"type": "integer"
},
"generated_at": {
"type": "integer"
},
"recomputed_ms": {
"type": "integer"
},
"recomputed_count": {
"type": "integer"
},
"recompute_limit_hit": {
"type": "boolean"
}
}
}
}
}
}
},
"category": "data",
"discoverable": true
}
},
"x402Version": 2
}Captured payload 6 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "500000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"resources": {
"type": "array",
"required": true,
"description": "List of full x402 resource URLs (https://...) to score. Max = tier size; fewer is allowed; duplicates are ignored."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"flags": "array | undefined",
"found": "boolean",
"grade": "string | undefined",
"score": "number | undefined",
"stats": "object | undefined",
"pending": "boolean | undefined",
"resource": "string",
"breakdown": "object | undefined",
"freshness": "object | undefined",
"probed_at": "number | undefined",
"subscores": "object | undefined",
"templated": "boolean | undefined",
"advertised": "object | null | undefined",
"confidence": "number | undefined",
"probes_30d": "number | undefined",
"recomputed": "boolean | undefined",
"scoreRange": "object | undefined",
"computed_at": "number | undefined",
"description": "string | null | undefined",
"endpoint_id": "number | undefined",
"serviceName": "string | null | undefined",
"explanations": "array | undefined",
"flagsDetailed": "array | undefined",
"recommendation": "string | undefined",
"gradeThresholds": "object | undefined",
"confidenceDetail": "object | undefined",
"dataCompleteSince": "number | null | undefined"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/x402-trust-bulk-500",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "Score up to 500 x402 endpoints in a single paid call. Each found result carries the FULL trust report — identical to POST /v1/x402-trust: score, grade, scoreRange, recommendation, confidence breakdown, the component/subscore breakdown, explanations, flags + flagsDetailed, advertised price, and 30-day on-chain stats — not just the scalar verdict. Cache rows older than 15 minutes are recomputed on-demand from the latest stored probes and settlements, so scores typically reflect reality within minutes. No live network re-probe is performed — for a fresh live probe use /v1/x402-trust. Per-request recompute limits apply (time + count); results include `recomputed` and `computed_at` so you can see which rows used cached vs freshly computed scores. Resources not in our observation set return `found:false`; you still pay for the batch AS LONG AS at least one resource is tracked. If NONE of the supplied resources are in our observation set the request is rejected with HTTP 400 `notCharged:true` and you are NOT charged. Duplicates are ignored.",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"resources": [
"https://api.example.com/v1/thing"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tier": 10,
"results": [
{
"flags": [],
"found": true,
"grade": "A",
"score": 87.4,
"stats": {
"payTo": "0x1111111111111111111111111111111111111111",
"delisted": false,
"probes30d": 144,
"payToStale": false,
"probeOk30d": 143,
"firstSeenTs": 1748707200000,
"avgLatencyMs": 210,
"observedDays": 30,
"latencyVantage": "measured from a single EU vantage point; includes network round-trip distance to the endpoint",
"settlements30d": 52,
"payToLastSeenTs": 1751299100000,
"payToSharedWith": 0,
"priceChanges30d": 0,
"settlementAsset": "USDC",
"envelopeValid30d": 144,
"distinctPayers30d": 14,
"settlementDecimals": 6,
"settledVolumeUsd30d": 5.2,
"settledVolumeUnits30d": "5200000"
},
"resource": "https://api.example.com/v1/thing",
"breakdown": {
"age": 0.7,
"uptime": 0.99,
"latency": 0.85,
"activity": 0.6,
"stability": 1,
"compliance": 1
},
"freshness": {
"live": false,
"ageSeconds": 100,
"probedAtTs": 1751299100000
},
"probed_at": 1751299100000,
"subscores": {
"economicConfidence": 0.6,
"specComplianceScore": 100,
"economicReputationScore": 71,
"technicalReliabilityScore": 92
},
"templated": false,
"advertised": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"network": "eip155:8453",
"decimals": 6,
"amountUsd": 0.01,
"observedAtTs": 1751299100000
},
"confidence": 0.82,
"probes_30d": 144,
"recomputed": true,
"scoreRange": {
"low": 82.1,
"high": 90,
"point": 87.4
},
"computed_at": 1751299200000,
"description": "Returns a thing.",
"endpoint_id": 123,
"serviceName": "Example Thing API",
"explanations": [
"High uptime over 144 probes.",
"Consistent 402 envelope compliance."
],
"flagsDetailed": [],
"recommendation": "proceed",
"gradeThresholds": {
"A": 80,
"B": 65,
"C": 50,
"D": 35,
"F": 0
},
"confidenceDetail": {
"overall": 0.82,
"economic": 0.6,
"observation": 0.9
},
"dataCompleteSince": 1748707200000
},
{
"found": false,
"grade": null,
"score": null,
"resource": "https://api.unknown.example/v1/missing",
"probed_at": null,
"confidence": null,
"probes_30d": null,
"recomputed": false,
"computed_at": null,
"endpoint_id": null,
"recommendation": null
}
],
"requested": 2,
"generated_at": 1751299200000,
"recomputed_ms": 420,
"recomputed_count": 1,
"recompute_limit_hit": false
}
}
},
"tags": [
"x402",
"trust",
"bulk",
"score",
"routing"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"resources"
],
"properties": {
"resources": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"generated_at",
"tier",
"requested",
"recomputed_count",
"recomputed_ms",
"recompute_limit_hit",
"results"
],
"properties": {
"tier": {
"type": "integer"
},
"results": {
"type": "array",
"items": {
"type": "object",
"required": [
"resource",
"found",
"endpoint_id",
"score",
"grade",
"recommendation",
"confidence",
"probes_30d",
"probed_at",
"computed_at",
"recomputed"
],
"properties": {
"flags": {
"type": "array"
},
"found": {
"type": "boolean"
},
"grade": {
"type": [
"null",
"string"
]
},
"score": {
"type": [
"null",
"number"
]
},
"stats": {
"type": "object",
"required": [
"firstSeenTs",
"observedDays",
"probes30d",
"probeOk30d",
"envelopeValid30d",
"avgLatencyMs",
"latencyVantage",
"priceChanges30d",
"payTo",
"payToLastSeenTs",
"payToStale",
"payToSharedWith",
"settlements30d",
"distinctPayers30d",
"settledVolumeUnits30d",
"settledVolumeUsd30d",
"settlementAsset",
"settlementDecimals",
"delisted"
],
"properties": {
"payTo": {
"type": "string"
},
"delisted": {
"type": "boolean"
},
"probes30d": {
"type": "integer"
},
"payToStale": {
"type": "boolean"
},
"probeOk30d": {
"type": "integer"
},
"firstSeenTs": {
"type": "integer"
},
"avgLatencyMs": {
"type": "integer"
},
"observedDays": {
"type": "integer"
},
"latencyVantage": {
"type": "string"
},
"settlements30d": {
"type": "integer"
},
"payToLastSeenTs": {
"type": "integer"
},
"payToSharedWith": {
"type": "integer"
},
"priceChanges30d": {
"type": "integer"
},
"settlementAsset": {
"type": "string"
},
"envelopeValid30d": {
"type": "integer"
},
"distinctPayers30d": {
"type": "integer"
},
"settlementDecimals": {
"type": "integer"
},
"settledVolumeUsd30d": {
"type": "number"
},
"settledVolumeUnits30d": {
"type": "string"
}
}
},
"resource": {
"type": "string"
},
"breakdown": {
"type": "object",
"required": [
"uptime",
"compliance",
"latency",
"age",
"activity",
"stability"
],
"properties": {
"age": {
"type": "number"
},
"uptime": {
"type": "number"
},
"latency": {
"type": "number"
},
"activity": {
"type": "number"
},
"stability": {
"type": "integer"
},
"compliance": {
"type": "integer"
}
}
},
"freshness": {
"type": "object",
"required": [
"live",
"probedAtTs",
"ageSeconds"
],
"properties": {
"live": {
"type": "boolean"
},
"ageSeconds": {
"type": "integer"
},
"probedAtTs": {
"type": "integer"
}
}
},
"probed_at": {
"type": [
"integer",
"null"
]
},
"subscores": {
"type": "object",
"required": [
"technicalReliabilityScore",
"specComplianceScore",
"economicReputationScore",
"economicConfidence"
],
"properties": {
"economicConfidence": {
"type": "number"
},
"specComplianceScore": {
"type": "integer"
},
"economicReputationScore": {
"type": "integer"
},
"technicalReliabilityScore": {
"type": "integer"
}
}
},
"templated": {
"type": "boolean"
},
"advertised": {
"type": "object",
"required": [
"amount",
"amountUsd",
"asset",
"network",
"decimals",
"observedAtTs"
],
"properties": {
"asset": {
"type": "string"
},
"amount": {
"type": "string"
},
"network": {
"type": "string"
},
"decimals": {
"type": "integer"
},
"amountUsd": {
"type": "number"
},
"observedAtTs": {
"type": "integer"
}
}
},
"confidence": {
"type": [
"null",
"number"
]
},
"probes_30d": {
"type": [
"integer",
"null"
]
},
"recomputed": {
"type": "boolean"
},
"scoreRange": {
"type": "object",
"required": [
"low",
"point",
"high"
],
"properties": {
"low": {
"type": "number"
},
"high": {
"type": "integer"
},
"point": {
"type": "number"
}
}
},
"computed_at": {
"type": [
"integer",
"null"
]
},
"description": {
"type": "string"
},
"endpoint_id": {
"type": [
"integer",
"null"
]
},
"serviceName": {
"type": "string"
},
"explanations": {
"type": "array",
"items": {
"type": "string"
}
},
"flagsDetailed": {
"type": "array"
},
"recommendation": {
"type": [
"null",
"string"
]
},
"gradeThresholds": {
"type": "object",
"required": [
"A",
"B",
"C",
"D",
"F"
],
"properties": {
"A": {
"type": "integer"
},
"B": {
"type": "integer"
},
"C": {
"type": "integer"
},
"D": {
"type": "integer"
},
"F": {
"type": "integer"
}
}
},
"confidenceDetail": {
"type": "object",
"required": [
"overall",
"observation",
"economic"
],
"properties": {
"overall": {
"type": "number"
},
"economic": {
"type": "number"
},
"observation": {
"type": "number"
}
}
},
"dataCompleteSince": {
"type": "integer"
}
}
}
},
"requested": {
"type": "integer"
},
"generated_at": {
"type": "integer"
},
"recomputed_ms": {
"type": "integer"
},
"recomputed_count": {
"type": "integer"
},
"recompute_limit_hit": {
"type": "boolean"
}
}
}
}
}
}
},
"category": "data",
"discoverable": true
}
},
"x402Version": 2
}Captured payload 7 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"days": {
"type": "number",
"required": false,
"description": "Lookback window in days (1-90, default 30)."
},
"resource": {
"type": "string",
"required": true,
"description": "Full x402 resource URL exactly as listed in discovery (e.g. https://api.example.com/v1/thing)."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"probes": "array",
"resource": "string",
"snapshots": "array"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/x402-history",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "Raw observation history for any publicly listed x402 endpoint: discovery snapshots (listed/delisted/relisted, price changes, payTo changes) and probe time-series (uptime, latency, quoted amount) over the requested window (1-90 days).",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"days": 30,
"resource": "https://api.example.com/v1/thing"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"probes": [
{
"amount": "200",
"latencyMs": 312,
"reachable": true,
"probedAtTs": 1782826208450,
"probeStatus": "ok"
}
],
"resource": "https://api.example.com/v1/thing",
"snapshots": [
{
"listed": true,
"source": "bazaar",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0xa2477E16dCB42E2AD80f03FE97D7F1a1646cd1c0",
"amount": "200",
"scheme": "exact",
"network": "eip155:8453"
}
],
"observedAtTs": 1782826208450
}
],
"generatedAt": 1782826208450
}
}
},
"tags": [
"x402",
"history",
"monitoring",
"timeseries"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"resource",
"days"
],
"properties": {
"days": {
"type": "integer"
},
"resource": {
"type": "string"
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"resource",
"generatedAt",
"snapshots",
"probes"
],
"properties": {
"probes": {
"type": "array",
"items": {
"type": "object",
"required": [
"probedAtTs",
"reachable",
"probeStatus",
"latencyMs",
"amount"
],
"properties": {
"amount": {
"type": "string"
},
"latencyMs": {
"type": "integer"
},
"reachable": {
"type": "boolean"
},
"probedAtTs": {
"type": "integer"
},
"probeStatus": {
"type": "string"
}
}
}
},
"resource": {
"type": "string"
},
"snapshots": {
"type": "array",
"items": {
"type": "object",
"required": [
"source",
"observedAtTs",
"listed",
"accepts"
],
"properties": {
"listed": {
"type": "boolean"
},
"source": {
"type": "string"
},
"accepts": {
"type": "array",
"items": {
"type": "object",
"required": [
"scheme",
"network",
"amount",
"asset",
"payTo"
],
"properties": {
"asset": {
"type": "string"
},
"payTo": {
"type": "string"
},
"amount": {
"type": "string"
},
"scheme": {
"type": "string"
},
"network": {
"type": "string"
}
}
}
},
"observedAtTs": {
"type": "integer"
}
}
}
},
"generatedAt": {
"type": "integer"
}
}
}
}
}
}
},
"category": "data",
"discoverable": true
}
},
"x402Version": 2
}Captured payload 8 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"limit": {
"type": "number",
"required": false,
"description": "Max alternatives to return (1-25, default 5)."
},
"resource": {
"type": "string",
"required": true,
"description": "Full x402 resource URL to find better alternatives for (must be in our observation set)."
},
"minScoreDelta": {
"type": "number",
"required": false,
"description": "Minimum trust-score advantage an alternative must have over the subject (default 5)."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"count": "number",
"subject": "object",
"resource": "string",
"alternatives": "array"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/similar",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "Find better alternatives to an x402 endpoint. Given a resource URL, returns the top semantically-similar endpoints (matched on advertised purpose via description embeddings) that currently OUT-SCORE it on our deterministic trust score — so an agent about to pay a mediocre endpoint can discover a more reliable, better-settled one serving the same function. Each result carries its trust score, grade, cosine similarity, advertised price and free endpoint-page URL. Same-host siblings and 'avoid'-flagged endpoints are excluded. Returns an empty list (still a valid answer) when nothing beats the subject.",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"limit": 5,
"resource": "https://api.example.com/v1/thing"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"note": "Semantically similar endpoints that out-score the subject. Similarity is cosine over description embeddings.",
"count": 2,
"subject": {
"grade": "C",
"score": 61.2,
"vectorized": true,
"inObservationSet": true
},
"resource": "https://api.example.com/v1/thing",
"alternatives": [
{
"grade": "A",
"score": 88.1,
"network": "eip155:8453",
"resource": "https://api.better.com/v1/thing",
"amountUsd": 0.001,
"similarity": 0.912,
"endpointPage": "https://x402.fuchss.app/endpoint/12345",
"recommendation": "proceed"
}
]
}
}
},
"tags": [
"x402",
"similar",
"discovery",
"routing",
"score"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"resource",
"limit"
],
"properties": {
"limit": {
"type": "integer"
},
"resource": {
"type": "string"
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"resource",
"subject",
"count",
"alternatives",
"note"
],
"properties": {
"note": {
"type": "string"
},
"count": {
"type": "integer"
},
"subject": {
"type": "object",
"required": [
"score",
"grade",
"inObservationSet",
"vectorized"
],
"properties": {
"grade": {
"type": "string"
},
"score": {
"type": "number"
},
"vectorized": {
"type": "boolean"
},
"inObservationSet": {
"type": "boolean"
}
}
},
"resource": {
"type": "string"
},
"alternatives": {
"type": "array",
"items": {
"type": "object",
"required": [
"resource",
"score",
"grade",
"recommendation",
"similarity",
"amountUsd",
"network",
"endpointPage"
],
"properties": {
"grade": {
"type": "string"
},
"score": {
"type": "number"
},
"network": {
"type": "string"
},
"resource": {
"type": "string"
},
"amountUsd": {
"type": "number"
},
"similarity": {
"type": "number"
},
"endpointPage": {
"type": "string"
},
"recommendation": {
"type": "string"
}
}
}
}
}
}
}
}
}
},
"category": "data",
"discoverable": true
}
},
"x402Version": 2
}Captured payload 9 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "11673",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"txHash": {
"type": "string",
"required": true,
"description": "0x-prefixed 32-byte transaction hash of an EIP-3009 settlement tx."
},
"network": {
"type": "string",
"required": false,
"description": "Venice RPC network slug (default base-mainnet). One of: base-mainnet, ethereum-mainnet, arbitrum-mainnet, optimism-mainnet, polygon-mainnet."
},
"hintResource": {
"type": "string",
"required": false,
"description": "Optional x402 resource URL the caller believes this payment was for. The server will cross-check our local ledger and surface a match/mismatch in the output."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"model": "string",
"route": "object",
"trace": "object",
"txHash": "string",
"network": "string",
"payment": "object"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/x402-payment-trace",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "x402 payment trace. POST a 0x-prefixed 32-byte tx hash that settled an EIP-3009 transferWithAuthorization or receiveWithAuthorization. The tx + receipt are fetched, the ERC20 Transfer log is decoded, the EIP-3009 selector and payer/payee/amount are extracted, and if the payment was to this reseller the local ledger is cross-checked. Returns schema-pinned JSON: {summary, payment{settled,payer,payee,amountUsd,token,selectorUsed}, route{x402Resource,reseller,knownTo,ourLedgerMatch}, trace{txHash,blockNumber,gasUsed}, observations[], riskFlags[{title,severity,evidence}]}. Multi-chain: base/eth/arb/op/polygon.",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"txHash": "0x384c5adf64e87fadc0b176005c49051cdc192d5c28b0158c05c3e9251a01d556",
"network": "base-mainnet"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"model": "llama-3.3-70b",
"route": {
"knownTo": [
"cdp"
],
"reseller": "x402.fuchss.app",
"x402Resource": "https://x402.fuchss.app/v1/x402-trust",
"ourLedgerMatch": true
},
"trace": {
"txHash": "0x384c5adf64e87fadc0b176005c49051cdc192d5c28b0158c05c3e9251a01d556",
"gasUsed": "85000",
"blockNumber": 12345678
},
"txHash": "0x384c5adf64e87fadc0b176005c49051cdc192d5c28b0158c05c3e9251a01d556",
"network": "base-mainnet",
"payment": {
"payee": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"payer": "0x1e82de8B9d2b12b86b2E11EAC29A36140543C451",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"settled": true,
"amountUsd": "0.005",
"selectorUsed": "transferWithAuthorization"
}
}
}
},
"tags": [
"x402",
"payment",
"trace",
"security",
"forensics"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"txHash",
"network"
],
"properties": {
"txHash": {
"type": "string"
},
"network": {
"type": "string"
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"txHash",
"network",
"model",
"payment",
"route",
"trace"
],
"properties": {
"model": {
"type": "string"
},
"route": {
"type": "object",
"required": [
"x402Resource",
"reseller",
"knownTo",
"ourLedgerMatch"
],
"properties": {
"knownTo": {
"type": "array",
"items": {
"type": "string"
}
},
"reseller": {
"type": "string"
},
"x402Resource": {
"type": "string"
},
"ourLedgerMatch": {
"type": "boolean"
}
}
},
"trace": {
"type": "object",
"required": [
"txHash",
"blockNumber",
"gasUsed"
],
"properties": {
"txHash": {
"type": "string"
},
"gasUsed": {
"type": "string"
},
"blockNumber": {
"type": "integer"
}
}
},
"txHash": {
"type": "string"
},
"network": {
"type": "string"
},
"payment": {
"type": "object",
"required": [
"settled",
"payer",
"payee",
"amountUsd",
"token",
"selectorUsed"
],
"properties": {
"payee": {
"type": "string"
},
"payer": {
"type": "string"
},
"token": {
"type": "string"
},
"settled": {
"type": "boolean"
},
"amountUsd": {
"type": "string"
},
"selectorUsed": {
"type": "string"
}
}
}
}
}
}
}
}
},
"category": "security",
"discoverable": true
}
},
"x402Version": 2
}Captured payload 10 of 10
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xbBECBE90F28632a9d52ed67b33b43767b8c89285",
"amount": "200000",
"scheme": "exact",
"network": "eip155:8453",
"outputSchema": {
"input": {
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFields": {
"events": {
"type": "array",
"required": false,
"description": "Event types to subscribe to (default all): payto_change, price_change, asset_network_change, spec_regression, delisting, liveness_down, liveness_recovered, liveness_flapping."
},
"delivery": {
"type": "object",
"required": false,
"description": "Optional push delivery: { webhook_url(s), slack_url(s) } (https public hosts, max 5 each). Each field accepts a single URL string or an array of URLs; webhook_url(s) = signed HTTPS webhook; slack_url(s) = Slack or Discord incoming webhook. All URLs are connection-tested before you're charged. Polling is always available."
},
"endpoint": {
"type": "string",
"required": true,
"description": "Full x402 resource URL to watch (must be in our observation set)."
},
"liveness_sensitivity_n": {
"type": "number",
"required": false,
"description": "Consecutive missed probes before a liveness_down is surfaced to you (1=paranoid … 10=relaxed; default 2)."
}
},
"headerFields": {
"PAYMENT-SIGNATURE": {
"type": "string",
"required": true,
"description": "Base64-encoded JSON PaymentPayload; auto-filled by x402 clients."
}
}
},
"output": {
"secret": "string",
"watched": "array",
"delivery": "object",
"edit_url": "string",
"poll_url": "string",
"watch_id": "string",
"renew_url": "string",
"cancel_url": "string",
"expires_at": "number",
"next_steps": "array",
"subscribed_events": "array | 'all'",
"probe_interval_sec": "number",
"liveness_sensitivity_n": "number"
}
},
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://x402.fuchss.app/v1/watch-endpoint-30d",
"tags": [
"x402",
"trust",
"reliability",
"monitoring",
"uptime",
"agents"
],
"iconUrl": "https://x402.fuchss.app/favicon.svg",
"mimeType": "application/json",
"description": "Monitor ONE x402 endpoint for 30 days and get alerted on changes that break agents: payTo changes (critical — possible takeover/rug), price changes, asset/network changes, 402-spec regressions, delisting, and liveness (down/recovered). Account-free: pay, receive a one-time secret + poll URL. Push to multiple signed HTTPS webhooks and/or Slack/Discord incoming webhooks (up to 5 each per watch). Every push URL is connection-tested before payment — unreachable URLs are rejected with no charge. Edit URLs or cancel early for free via bearer-authed PATCH/DELETE /v1/watch/{id}. Poll the append-only event log; nothing is lost between polls.",
"providerUrl": "https://x402.fuchss.app",
"serviceName": "x402.fuchss.app — x402 Trust & Reliability"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"events": [
"payto_change",
"price_change",
"delisting"
],
"delivery": {
"slack_url": "https://hooks.slack.com/services/…",
"webhook_urls": [
"https://your-app.example.com/x402-alerts",
"https://backup.example.com/x402-alerts"
]
},
"endpoint": "https://api.example.com/v1/thing",
"liveness_sensitivity_n": 2
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"secret": "wsk_… (shown once — store it now)",
"watched": [
{
"resource": "https://api.example.com/v1/thing",
"endpoint_id": 123
}
],
"delivery": {
"poll": true,
"slack": [],
"webhook": [
"https://your-app.example.com/x402-alerts"
]
},
"edit_url": "/v1/watch/01J8Z9K7X4QmY9example",
"poll_url": "/v1/watch/01J8Z9K7X4QmY9example/events",
"watch_id": "01J8Z9K7X4Qmy9example",
"renew_url": "/v1/watch/01J8Z9K7X4QmY9example/renew",
"cancel_url": "/v1/watch/01J8Z9K7X4QmY9example",
"expires_at": 1751328000000,
"next_steps": [
{
"step": 1,
"action": "store_secret",
"details": "Store `secret` in a secrets manager. It is shown only once; we only store its SHA-256 hash."
},
{
"url": "/v1/watch/01J8Z9K7X4QmY9example/events",
"step": 2,
"action": "poll_events",
"method": "GET",
"details": "Read the append-only event log. Nothing that happened between two polls is lost.",
"headers": {
"Authorization": "Bearer wsk_…"
},
"cursor_hint": "Start without `since`; then use the highest returned `event_id` as the next `since` value.",
"cursor_param": "since"
},
{
"step": 3,
"action": "verify_webhook",
"details": "If you configured webhook_url(s), verify every incoming POST: the `x-signature` header must equal `sha256=` + HMAC-SHA256(body) keyed by hex(sha256(secret)) (NOT the raw secret). A `connection_test` ping is sent during setup — see delivery.connection_test.",
"enabled": true
},
{
"url": "/v1/watch/01J8Z9K7X4QmY9example",
"step": 4,
"action": "edit",
"method": "PATCH",
"details": "Change webhook/Slack URLs, liveness sensitivity, or subscribed events for free. PATCH with Authorization: Bearer <secret>; new URLs are connection-tested.",
"headers": {
"Authorization": "Bearer wsk_…"
}
},
{
"url": "/v1/watch/01J8Z9K7X4QmY9example",
"step": 5,
"action": "cancel",
"method": "DELETE",
"details": "Stop monitoring early (probing drops to normal cadence immediately). Free, bearer-authed.",
"headers": {
"Authorization": "Bearer wsk_…"
}
},
{
"url": "/v1/watch/01J8Z9K7X4QmY9example/renew",
"step": 6,
"action": "renew",
"method": "POST",
"details": "Extend the watch by 30 days before expires_at. The secret stays the same."
}
],
"subscribed_events": "all",
"probe_interval_sec": 300,
"liveness_sensitivity_n": 2
}
}
},
"tags": [
"x402",
"watch",
"monitoring",
"alerts"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"endpoint",
"events",
"liveness_sensitivity_n",
"delivery"
],
"properties": {
"events": {
"type": "array",
"items": {
"type": "string"
}
},
"delivery": {
"type": "object",
"required": [
"webhook_urls",
"slack_url"
],
"properties": {
"slack_url": {
"type": "string"
},
"webhook_urls": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"endpoint": {
"type": "string"
},
"liveness_sensitivity_n": {
"type": "integer"
}
}
},
"type": {
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
]
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"watch_id",
"secret",
"poll_url",
"renew_url",
"edit_url",
"cancel_url",
"expires_at",
"watched",
"probe_interval_sec",
"subscribed_events",
"liveness_sensitivity_n",
"delivery",
"next_steps"
],
"properties": {
"secret": {
"type": "string"
},
"watched": {
"type": "array",
"items": {
"type": "object",
"required": [
"endpoint_id",
"resource"
],
"properties": {
"resource": {
"type": "string"
},
"endpoint_id": {
"type": "integer"
}
}
}
},
"delivery": {
"type": "object",
"required": [
"poll",
"webhook",
"slack"
],
"properties": {
"poll": {
"type": "boolean"
},
"slack": {
"type": "array"
},
"webhook": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"edit_url": {
"type": "string"
},
"poll_url": {
"type": "string"
},
"watch_id": {
"type": "string"
},
"renew_url": {
"type": "string"
},
"cancel_url": {
"type": "string"
},
"expires_at": {
"type": "integer"
},
"next_steps": {
"type": "array",
"items": {
"type": "object",
"required": [
"step",
"action",
"details"
],
"properties": {
"url": {
"type": "string"
},
"step": {
"type": "integer"
},
"action": {
"type": "string"
},
"method": {
"type": "string"
},
"details": {
"type": "string"
},
"enabled": {
"type": "boolean"
},
"headers": {
"type": "object",
"required": [
"Authorization"
],
"properties": {
"Authorization": {
"type": "string"
}
}
},
"cursor_hint": {
"type": "string"
},
"cursor_param": {
"type": "string"
}
}
}
},
"subscribed_events": {
"type": "string"
},
"probe_interval_sec": {
"type": "integer"
},
"liveness_sensitivity_n": {
"type": "integer"
}
}
}
}
}
}
},
"category": "monitoring",
"discoverable": true
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
81/100 Solid
#93 of 136 in Verification. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 98.4% uptime 30d
- Compliance
- A 14/14 checks pass
- Price
- $0.005 to $0.50 p27 in Verification
- Risk
- clean no risk flag
- Traction
- $1.89 30d 9 buyers, top buyer 92% (address, not entity)
14/14 compliance checks
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
402 terms unchanged since 2026-07-25. Last up 2026-10-24.
── Site signals
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
How the score works
What the score read on this service: status degraded, 98.4% uptime 30d, 251ms response p95, x402 compliance 14 of 14, $0.005 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.
The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.
Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.
It is a score inside Verification, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 136 listings, this one among them: the same 136 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.
Settled via coinbase ($1.89, 41 tx). Traction is a conservative undercount; first settlement seen 2026-05-15.
All measured facts
What it does
Deterministic trust scoring and monitoring for the x402 ecosystem. 88k+ endpoints tracked 24/7 on Base + Solana: probe reliability, latency, spec compliance, price history, and real on-chain USDC settlement per endpoint. Paid API: per-endpoint trust score with live re-probe, bulk scoring tiers (10-500), endpoint history, similar-endpoint discovery, payment tracing, and 30-day watch subscriptions with webhook/Slack alerts. Free: trust preview, leaderboard, ecosystem report, embeddable badges. Scoring is a deterministic formula - no LLM in the loop, fully explainable.
x402 Trust Prober is a listed x402 Verification API. Captured payment terms name Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.
Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.
Page rendered at . This response time is separate from the observation and computation times attached to each measurement.
Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.
Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.
Observed daily coverage: 2026-09-24 to 2026-10-23 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: . Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.
Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.
x402 List home · Services · Verification
- uptime · latest daily rollup
- 100%
- uptime 7d
- 98%
- uptime 30d
- 98.4%
- uptime 90d
- 98.8%
- response p95
- 251ms
- avg response
- 366ms
- total checks
- 2,464
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.005
- price (max)
- $0.50
- category percentile (min)
- p27 in Verification
- category percentile (max)
- p77 in Verification
- endpoints / prices
- 10 / 8
- model
- tiered
- stability
- 100%
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- 157d
- registrar
- CloudFlare, Inc.
- hosting
- custom
- domain created
- 2026-05-15
Identity facts, not a risk score.
- assessment volume 30d
- $1.89
- exact assessment volume 30d (USD)
- 1.886
- assessment recorded at (UTC)
- 2026-10-23T19:23:00.600Z
- buyers 30d
- 9
- settlements 30d
- 41
- measured since
- 2026-05-15 (start of our harvest window)
- last settlement
- 2026-10-22
- top buyer share
- 92% of 30d volume (address, not entity)
- top 3 buyers share
- 96% of 30d volume (addresses, not entities)
- concentrated volume
- no
- trend 7d vs 30d
- 0.10x the 30d daily rate
- networks
- eip155:8453
- volume all-time
- $10.79
- settlements all-time
- 264
- median settlement 30d
- $0.005
- max settlement 30d
- $0.50
Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.
- member since
- 2026-07-25
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 192ms | 9 | |
| Online | 402 | 200ms | 9 | |
| Online | 402 | 186ms | 9 | |
| Online | 402 | 256ms | 9 | |
| Online | 402 | 215ms | 9 | |
| Online | 402 | 192ms | 9 | |
| Online | 402 | 176ms | 9 | |
| Online | 402 | 182ms | 9 | |
| Online | 402 | 184ms | 9 | |
| Online | 402 | 162ms | 9 | |
| Online | 402 | 200ms | 9 | |
| Online | 402 | 193ms | 9 | |
| Online | 402 | 245ms | 9 | |
| Online | 402 | 183ms | 9 | |
| Online | 402 | 203ms | 9 | |
| Online | 402 | 202ms | 9 | |
| Online | 402 | 240ms | 9 | |
| Online | 402 | 178ms | 9 |
Changes0 in 30d
No changes recorded in the last 30 days.
Over time
On-chain volume daily snapshots, USD 30d: $1.89, peak $1.71 on 10-15
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 8 of 30 completed days below 100%
uptime below 100%, to scale uptime 0%
- Volume 30d
- $1.89
- Uptime
- 8 of 30 completed days below 100%
More charts
Response time daily average, ms min 119ms, avg 347ms, max 775ms
09-24 to 10-23 UTC
Scores over time
x402 compliance low 14/14, high 14/14
09-24 to 10-23 UTC
Price percentile in Verification own low to high; exact values below
09-24 to 10-23 UTC
Site signals present (of 6) own low to high; exact values below
09-24 to 10-23 UTC
Scores: one day per column, 09-24 to 10-23, on the columns of Response time. Uptime held below 100% on some days in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.
Each series spans only the dates it has data for. Every series is also served as JSON at /api, /scores, /volume and /buyers.
Values
The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.
Daily snapshot total, 30d: $1.92, peak $1.71 on 10-15. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.
Daily address snapshots: 2026-09-24 to 2026-10-23 UTC. Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here. † marks a recorded $0.00 with settlements.
Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Volume | Buyers | Settlements | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|---|---|---|
| 2026-09-24 | no data | no data | no data | no data | no data | 14/14 | p27 | 1/6 |
| 2026-09-25 | no data | no data | no data | 100% | 513.62ms | 14/14 | p27 | 1/6 |
| 2026-09-26 | $0.02 | 1 | 3 | 98.89% | 774.53ms | 14/14 | p27 | 1/6 |
| 2026-09-27 | no data | no data | no data | 100% | 549.46ms | 14/14 | p26 | 1/6 |
| 2026-09-28 | $0.03 | 1 | 5 | 100% | 560.29ms | 14/14 | p26 | 1/6 |
| 2026-09-29 | no data | no data | no data | 100% | 581.70ms | 14/14 | p26 | 1/6 |
| 2026-09-30 | no data | no data | no data | 100% | 530.37ms | 14/14 | p26 | 1/6 |
| 2026-10-01 | $0.01 | 1 | 1 | 100% | 455.10ms | 14/14 | p26 | 0/6 |
| 2026-10-02 | $0.02 | 1 | 3 | 100% | 441.83ms | 14/14 | p26 | 0/6 |
| 2026-10-03 | $0.00 recorded† | 1 | 1 | 100% | 313.27ms | 14/14 | p26 | 1/6 |
| 2026-10-04 | no data | no data | no data | 100% | 448.56ms | 14/14 | p26 | 1/6 |
| 2026-10-05 | no data | no data | no data | 100% | 349.40ms | 14/14 | p26 | 1/6 |
| 2026-10-06 | $0.03 | 1 | 3 | 100% | 375.48ms | 14/14 | p26 | 1/6 |
| 2026-10-07 | no data | no data | no data | 100% | 288.36ms | 14/14 | p26 | 1/6 |
| 2026-10-08 | no data | no data | no data | 97.78% | 308.20ms | 14/14 | p26 | 1/6 |
| 2026-10-09 | no data | no data | no data | 98.89% | 233.92ms | 14/14 | p26 | 1/6 |
| 2026-10-10 | $0.01 | 1 | 1 | 100% | 308.12ms | 14/14 | p26 | 1/6 |
| 2026-10-11 | no data | no data | no data | 60% | 451.33ms | 14/14 | p26 | 0/6 |
| 2026-10-12 | no data | no data | no data | 0% | no data | 14/14 | p26 | 0/6 |
| 2026-10-13 | no data | no data | no data | 0% | no data | 14/14 | p26 | 0/6 |
| 2026-10-14 | no data | no data | no data | 97.56% | 265.75ms | 14/14 | p26 | 0/6 |
| 2026-10-15 | $1.71 | 3 | 11 | 100% | 254.41ms | 14/14 | p26 | 1/6 |
| 2026-10-16 | $0.04 | 1 | 7 | 100% | 258.36ms | 14/14 | p26 | 1/6 |
| 2026-10-17 | no data | no data | no data | 100% | 185.30ms | 14/14 | p26 | 1/6 |
| 2026-10-18 | no data | no data | no data | 100% | 122.41ms | 14/14 | p27 | 1/6 |
| 2026-10-19 | no data | no data | no data | 100% | 135.26ms | 14/14 | p27 | 1/6 |
| 2026-10-20 | no data | no data | no data | 100% | 193.15ms | 14/14 | p27 | 1/6 |
| 2026-10-21 | $0.01 | 1 | 2 | 75% | 118.82ms | 14/14 | p27 | 1/6 |
| 2026-10-22 | $0.04 | 1 | 4 | 100% | 152.61ms | 14/14 | p27 | 0/6 |
| 2026-10-23 | no data | no data | no data | 100% | 202.33ms | 14/14 | p27 | 0/6 |
Alternatives in Verification
5 of 135 other ranked services in Verification, ordered by the same measured score.
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