PulseFeed — x402 Trust & Safety Oracle
VerificationVerify any x402 endpoint before your agent pays: liveness, scam/anomaly scan (payTo hijack, bait-and-switch, honeypot), on-chain receiver verification and an open Trust Score. Continuous independent audit of the whole x402 ecosystem (~5k endpoints tracked). Paid: /trust $0.02, /trust/dataset $0.10, /data/full $1 (cross-domain x402+MCP dataset). Free: /verify, /status.json, /incidents (security disclosures with on-chain proof).
Pay from $0.02 to $1.00 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
listed 2026-07-30 · no on-chain settlement recorded yet
ASSESSMENT
updated 2h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 266ms
- avg response
- 266ms
- total checks
- 1
compliance A (13/14): declares the current x402 version (2)
13 of 14 x402 conformance checks pass; failing: declares the current x402 version (2). Full checklist below.
price $0.02 to $1.00 (p73 in Verification)
- price (min)
- $0.02
- price (max)
- $1.00
- category percentile (min)
- p73 in Verification
- category percentile (max)
- p90 in Verification
- endpoints / prices
- 3 / 3
- model
- tiered
- stability
- 100%
risk clean
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
- 24d
- registrar
- Key-Systems LLC
- hosting
- custom
- domain created
- 2026-07-06
Identity facts, not a risk score.
traction $0 30d · 0 buyers
- volume 30d
- $0
- buyers 30d
- 0
- settlements 30d
- 0
- first settlement
- ---
- last settlement
- ---
- top buyer share
- -
- trend 7d vs 30d
- -
- networks
- eip155:8453
- volume all-time
- $0
- settlements all-time
- 0
- median settlement 30d
- $0
- max settlement 30d
- $0
- settled via
- -
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedPulseFeed provides a trust and safety oracle for x402 services, offering verification, scam detection, and on-chain receiver checks to help users avoid unsafe endpoints.
- category
- trust-oracle
- in
- query params
- auth
- none
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| GET | /data/full | PulseFeed Data API — the wholesale trust backbone for agentic commerce. One call returns the ENTIRE cross-domain dataset: every x402 service's moat profile (trustScore, scam flags, on-chain receiver, compounding payTo/price history), every audited MCP server (safe/avoid, install-script, abandoned), ecosystem aggregates + live security incidents with on-chain proof. For builders of trust/monitoring tools, agent frameworks & researchers. Free preview + schema: /data.json. Params: ?limit=N, ?all=1. | $1.00 | Base | USDC |
| GET | /trust | x402 trust & safety oracle: before paying an unknown x402 endpoint, check if it's safe. Live validity, reputation/uptime, scam/anomaly scan (payTo hijack, bait-and-switch, honeypot, wrong asset) + on-chain receiver check on Base (real address receiving USDC, or fresh/empty) → pay/avoid verdict. ?endpoint=url. No param = catalog of working services + ecosystem risk map | $0.02 | Base | USDC |
| GET | /trust/dataset | Bulk x402 trust dataset in one call: every service's full trust profile — trustScore/verdict, scam flags, receiver stability, on-chain profile + compounding payTo/price change history. Built for trust/uptime/monitoring tools (?all=1 to include dead, ?limit=N). Free format preview in /status.json (dataset) | $0.10 | Base | USDC |
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /data/full returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i 'https://pulsefeed.dev/data/full'
// 402 response (captured by monitor) · 3 payloads · click to expand
[
{
"docs": {
"llms": "https://pulsefeed.dev/llms.txt",
"site": "https://pulsefeed.dev/data",
"openapi": "https://pulsefeed.dev/openapi.json"
},
"error": "X-PAYMENT header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7f5f784Ba98cEcFC0bA4336f0E48222A3d4d69a8",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://pulsefeed.dev/trust/dataset",
"description": "Bulk trust data for every x402 service in one call. For builders of trust, uptime and monitoring tools: each service's full profile — 0-100 trust score and pay/avoid verdict, scam flags, receiver stability, on-chain receiver profile, plus the compounding payTo and price change history. Skip scraping hundreds of endpoints. ?all=1 includes dead/invalid services, ?limit=N. Free format preview and samples: /status.json and /data/sample.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"all": "set to 1 to include dead/invalid services",
"limit": "max services to return (default 2000)"
},
"discoverable": true
}
},
"maxAmountRequired": "100000",
"maxTimeoutSeconds": 60
}
],
"freeSample": "https://pulsefeed.dev/data/sample",
"quickstart": {
"curl": "curl https://pulsefeed.dev/trust/dataset # returns this 402 challenge; retry with an X-PAYMENT header built by any x402 client",
"node": "import { wrapFetchWithPayment } from \"x402-fetch\"; const payingFetch = wrapFetchWithPayment(fetch, account); const r = await payingFetch(\"https://pulsefeed.dev/trust/dataset\"); // account = viem account with USDC on Base",
"guard": "npm i pulsefeed-x402-guard # optional: verify endpoints before paying",
"install": "npm i x402-fetch viem"
},
"freePreview": "https://pulsefeed.dev/status.json",
"x402Version": 1
},
{
"docs": {
"llms": "https://pulsefeed.dev/llms.txt",
"site": "https://pulsefeed.dev/data",
"openapi": "https://pulsefeed.dev/openapi.json"
},
"error": "X-PAYMENT header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7f5f784Ba98cEcFC0bA4336f0E48222A3d4d69a8",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://pulsefeed.dev/data/full",
"description": "The whole agentic-commerce trust dataset in one call: every audited x402 endpoint (trust score, scam flags, on-chain receiver, payTo/price history) AND every audited MCP server (safe/avoid, install-script risk, abandonment) plus incidents with on-chain proof. Cross-domain and longitudinal. NOTE: $1.00 exceeds the default 0.1 USDC cap in x402-fetch — pass maxValue. Free sample: /data/sample",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"all": "set to 1 to include dead/invalid x402 services",
"limit": "max x402 services (default 3000)"
},
"discoverable": true
}
},
"maxAmountRequired": "1000000",
"maxTimeoutSeconds": 60
}
],
"freeSample": "https://pulsefeed.dev/data/sample",
"quickstart": {
"curl": "curl https://pulsefeed.dev/data/full # returns this 402 challenge; retry with an X-PAYMENT header built by any x402 client",
"node": "import { wrapFetchWithPayment } from \"x402-fetch\"; const payingFetch = wrapFetchWithPayment(fetch, account, BigInt(1000000)); const r = await payingFetch(\"https://pulsefeed.dev/data/full\"); // account = viem account with USDC on Base",
"guard": "npm i pulsefeed-x402-guard # optional: verify endpoints before paying",
"install": "npm i x402-fetch viem"
},
"freePreview": "https://pulsefeed.dev/data.json",
"x402Version": 1,
"clientSpendCapWarning": "This resource costs 1.00 USDC, which is above x402-fetch's DEFAULT client-side cap of 0.10 USDC. A client using default settings will refuse the payment locally before sending it. Pass maxValue explicitly: wrapFetchWithPayment(fetch, account, BigInt(1000000)). Cheaper alternatives under the default cap: GET /trust/dataset ($0.10, x402-only bulk feed) or GET /trust?endpoint= ($0.02, single check). Free sample: https://pulsefeed.dev/data/sample"
},
{
"docs": {
"llms": "https://pulsefeed.dev/llms.txt",
"site": "https://pulsefeed.dev/data",
"openapi": "https://pulsefeed.dev/openapi.json"
},
"error": "X-PAYMENT header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7f5f784Ba98cEcFC0bA4336f0E48222A3d4d69a8",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://pulsefeed.dev/trust",
"description": "Is this x402 endpoint safe to pay? Vet an unknown endpoint or seller BEFORE paying: pay/avoid verdict, 0-100 trust score, live 402 probe, scam flags (payTo hijack, price bait-and-switch, honeypot, wrong asset) and an on-chain check of the receiver wallet on Base. From a continuous audit of 5,600+ endpoints — ~74% are dead or invalid. ?endpoint=url; omit it for a trust-ranked catalog of working services.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"endpoint": "x402 endpoint URL to verify (omit for the working-services catalog + risk map)"
},
"discoverable": true
}
},
"maxAmountRequired": "20000",
"maxTimeoutSeconds": 60
}
],
"quickstart": {
"curl": "curl https://pulsefeed.dev/trust # returns this 402 challenge; retry with an X-PAYMENT header built by any x402 client",
"node": "import { wrapFetchWithPayment } from \"x402-fetch\"; const payingFetch = wrapFetchWithPayment(fetch, account); const r = await payingFetch(\"https://pulsefeed.dev/trust\"); // account = viem account with USDC on Base",
"guard": "npm i pulsefeed-x402-guard # optional: verify endpoints before paying",
"install": "npm i x402-fetch viem"
},
"freePreview": "https://pulsefeed.dev/verify?endpoint=<url>",
"x402Version": 1
}
] OVER TIME
All charts share the 30d window selected here. Every series is also served as JSON at /api/v1/services/pulsefeed-x402-trust-safety-oracle/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
Median across 3 endpoints. Use the selector to isolate one.
COMPLIANCE
13/14 checks pass · grade A · failing: declares the current x402 version (2)- 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
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (9) · click to expand
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