◐
SALT19 Agent Utility Grid
Verification PAYMENT-READYpayment-ready until 2026-09-08
MCP/x402 decision and verification utilities for autonomous software agents, paid in USDC on Base.
Pay from $0.01 to $1.25 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
listed 2026-08-31 · no on-chain settlement recorded yet
VERDICT
ranking generation 3solid 78/100 #48 of 58 in Verification by measured score
What the score read on this service: status degraded, 100% uptime 30d, 1440ms response p95, x402 compliance 14 of 14, $0.01 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.
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 58 listings, this one among them. That set is wider than the 58 the position above is counted against, 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.
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.
ALTERNATIVES IN VERIFICATION
Other Verification services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).
| SERVICE | BAND | SCORE | UPTIME 30D | VOL 30D |
|---|---|---|---|---|
| 10x402 | strong | 97 | 100% | --- |
| Hermes Plant | strong | 96 | 100% | --- |
| probe402 | strong | 96 | 100% | --- |
| Permit Verdict Settlement Oracle | strong | 95 | 100% | --- |
| Aegis | strong | 95 | 99.5% | --- |
5 of 57 other ranked services in Verification
ASSESSMENT
updated 2h agoThe parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.
reliability 100%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 1440ms
- avg response
- 1038ms
- total checks
- 24
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.01 to $1.25 (p45 in Verification)
- price (min)
- $0.01
- price (max)
- $1.25
- category percentile (min)
- p45 in Verification
- category percentile (max)
- p84 in Verification
- endpoints / prices
- 14 / 12
- model
- tiered
- stability
- 0%
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
- -
- registrar
- -
- hosting
- custom
- domain created
- ---
Identity facts, not a risk score.
traction $0.00 30d · 0 buyers
- volume 30d
- $0.00
- buyers 30d
- 0
- settlements 30d
- 0
- measured since
- --- (start of our harvest window)
- last settlement
- ---
- top buyer share
- -
- trend 7d vs 30d
- -
- networks
- eip155:8453
- volume all-time
- $0
- settlements all-time
- 0
- median settlement 30d
- -
- max settlement 30d
- -
- 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.
CHANGES
2 in 30dPayout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.
changes schema changed 4h ago (2 in 30d)
schema changed · 4h ago
endpoint added POST /v1/commerce-verify
endpoint added POST /v1/dependency-go-no-go
endpoint added POST /v1/github-repo-preflight
endpoint added POST /v1/model-memory-fit
schema added POST /v1/commerce-verify exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}
schema added POST /v1/dependency-go-no-go exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}
schema added POST /v1/github-repo-preflight exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}
schema added POST /v1/model-memory-fit exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}
schema changed · 7h ago
endpoint added POST /v1/npm-package-intel
schema added POST /v1/npm-package-intel exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}
WHAT IT DOES
ai-derivedNo AI synthesis has been produced for this service yet.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| POST | /v1/agent-claim-output-verifier | $0.50 | Base | USDC | header | |
| POST | /v1/agent-code-change-risk-gate | $1.25 | Base | USDC | header | |
| POST | /v1/agent-decision-preflight | $0.50 | Base | USDC | header | |
| POST | /v1/agent-plan-verifier | $0.75 | Base | USDC | header | |
| POST | /v1/commerce-decision | $0.01 | Base | USDC | header | |
| POST | /v1/commerce-receipt | $0.04 | Base | USDC | header | |
| POST | /v1/commerce-verify | $0.02 | Base | USDC | header | |
| POST | /v1/dependency-go-no-go | $0.25 | Base | USDC | header | |
| POST | /v1/dependency-upgrade-go-no-go | $0.20 | Base | USDC | header | |
| POST | /v1/github-repo-preflight | $0.10 | Base | USDC | header | |
| POST | /v1/model-memory-fit | $0.05 | Base | USDC | header | |
| POST | /v1/npm-package-intel | $0.05 | Base | USDC | header | |
| POST | /v1/repo-adoption-go-no-go | $0.35 | Base | USDC | header | |
| POST | /v1/url-http-preflight | $0.03 | Base | USDC | header |
14 endpoints
REQUEST / RESPONSE EXAMPLE
An unpaid request to POST /v1/agent-claim-output-verifier returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
// request
curl -i -X POST 'https://api.salt19.com/v1/agent-claim-output-verifier'
// 402 response (captured by monitor) · 14 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/dependency-go-no-go",
"mimeType": "application/json",
"description": "Dependency approval decision for coding agents: decide whether an npm dependency or package is safe to install or adopt and return GO, WARN, or BLOCK using vulnerabilities, security, license, maintenance, deprecation, and package metadata."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"package": "hono",
"version": "4.13.3"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"reasons": [
"No OSV vulnerabilities returned",
"License declared",
"Recent publication activity"
],
"verdict": "GO",
"evidence": {
"license": "MIT",
"package": "hono",
"version": "4.13.3",
"vulnerabilities": 0
},
"policy_version": "salt19-dependency-policy-v1"
}
}
},
"schema": {
"type": "object",
"$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": [
"package"
],
"properties": {
"package": {
"type": "string",
"maxLength": 214,
"minLength": 1
},
"version": {
"type": "string",
"maxLength": 64
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/github-repo-preflight",
"mimeType": "application/json",
"description": "GitHub repository due diligence for coding agents: evaluate whether a public or open-source repository is safe and maintained enough to adopt using license, maintenance, release freshness, activity, project health, and risk signals."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"repo": "https://github.com/cloudflare/workers-sdk"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"license": "Apache-2.0",
"archived": false,
"repository": "cloudflare/workers-sdk",
"risk_flags": [],
"open_issues": 123,
"default_branch": "main",
"days_since_push": 1
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"repo"
],
"properties": {
"repo": {
"type": "string",
"maxLength": 512
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "40000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/commerce-receipt",
"mimeType": "application/json",
"description": "Verify an x402 commercial state and persist a signed Ed25519 Proof402 receipt whose Commerce State Root commits request, offer, policy, payment, settlement, and delivery evidence; receipts are later Merkle-batched for public inclusion proofs."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"request": {
"method": "POST",
"resource": "https://seller.example/v1/data"
},
"delivery": {
"result": "ok"
},
"settlement": {
"payer": "0x...",
"network": "eip155:8453",
"success": true,
"transaction": "0x..."
},
"payment_payload": {
"payload": {
"signature": "0x...",
"authorization": {
"to": "0x...",
"from": "0x...",
"nonce": "0x...",
"value": "20000",
"validAfter": "0",
"validBefore": "1999999999"
}
},
"accepted": {
"asset": "0x...",
"payTo": "0x...",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453"
},
"x402Version": 2
},
"payment_required": {
"accepts": [
{
"asset": "0x...",
"payTo": "0x...",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"x402Version": 2
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"receipt": {
"id": "...",
"signing_key_id": "...",
"verification_url": "https://api.salt19.com/proof402/receipts/...",
"signature_algorithm": "Ed25519"
},
"verdict": "VERIFIED_LOCAL_EVIDENCE",
"commerce_root": "..."
}
}
},
"schema": {
"type": "object",
"$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": [
"request",
"payment_required",
"payment_payload",
"settlement",
"delivery"
],
"properties": {
"policy": {
"type": "object",
"properties": {
"allowed_assets": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 32
},
"allowed_payees": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 64
},
"blocked_payees": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 64
},
"allowed_networks": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 32
},
"spend_24h_atomic": {
"type": "string",
"pattern": "^[0-9]+$"
},
"max_amount_atomic": {
"type": "string",
"pattern": "^[0-9]+$"
},
"max_per_day_atomic": {
"type": "string",
"pattern": "^[0-9]+$"
},
"max_timeout_seconds": {
"type": "integer",
"maximum": 3600,
"minimum": 1
}
},
"additionalProperties": false
},
"request": {
"type": "object",
"required": [
"resource"
],
"properties": {
"body": {},
"method": {
"type": "string",
"maxLength": 16
},
"resource": {
"type": "string",
"maxLength": 2048,
"minLength": 1
},
"parameters": {
"type": "object"
},
"content_type": {
"type": "string",
"maxLength": 128
}
},
"additionalProperties": false
},
"delivery": {},
"settlement": {
"type": "object"
},
"payment_payload": {
"type": "object"
},
"payment_required": {
"type": "object",
"required": [
"x402Version",
"accepts"
],
"properties": {
"accepts": {
"type": "array",
"items": {
"type": "object"
},
"maxItems": 16,
"minItems": 1
},
"resource": {
"type": "object"
},
"extensions": {
"type": "object"
},
"x402Version": {
"enum": [
2
],
"type": "integer"
}
},
"additionalProperties": true
},
"expected_delivery": {
"type": "object",
"properties": {
"expected_sha256": {
"type": "string",
"pattern": "^[0-9a-fA-F]{64}$"
},
"required_fields": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 64
}
},
"additionalProperties": false
},
"target_salt19_operation_id": {
"type": "string",
"maxLength": 128,
"minLength": 8
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "500000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/agent-claim-output-verifier",
"mimeType": "application/json",
"description": "Map an autonomous agent claim or output to supplied evidence and return SUPPORTED, PARTIALLY_SUPPORTED, NOT_PROVEN, or CONTRADICTED with explicit unsupported elements, contradictions, missing evidence, and recommended verification."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"claim": "The deployment is healthy and payment reconciliation succeeded.",
"evidence": [
{
"id": "health",
"relation": "SUPPORTS",
"statement": "Health endpoint returned 200"
},
{
"id": "stripe",
"relation": "NEUTRAL",
"statement": "No reconciliation result was collected"
}
],
"required_standard": "Every material claim element must have direct evidence"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"verdict": "PARTIALLY_SUPPORTED",
"confidence": 0.5,
"contradictions": [],
"missing_evidence": [
"Independent evidence supporting or contradicting: payment reconciliation succeeded"
],
"supported_elements": [
"The deployment is healthy"
],
"unsupported_elements": [
"payment reconciliation succeeded"
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"claim"
],
"properties": {
"claim": {
"type": "string",
"maxLength": 12000,
"minLength": 1
},
"context": {
"type": "string",
"maxLength": 8000
},
"evidence": {
"type": "array",
"items": {
"oneOf": [
{
"type": "string",
"maxLength": 8000,
"minLength": 1
},
{
"type": "object",
"required": [
"statement"
],
"properties": {
"id": {
"type": "string",
"maxLength": 256
},
"source": {
"type": "string",
"maxLength": 1000
},
"relation": {
"enum": [
"SUPPORTS",
"CONTRADICTS",
"NEUTRAL"
],
"type": "string"
},
"statement": {
"type": "string",
"maxLength": 8000,
"minLength": 1
},
"observed_at": {
"type": "string",
"maxLength": 128
}
},
"additionalProperties": false
}
]
},
"maxItems": 64
},
"required_standard": {
"type": "string",
"maxLength": 2000
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "30000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/url-http-preflight",
"mimeType": "application/json",
"description": "Inspect a URL before an autonomous agent calls it, and preflight or verify a website or external API endpoint is healthy and safe to call by checking HTTP status, redirects, latency, and security headers."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://example.com"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"status": 200,
"final_url": "https://example.com/",
"redirects": 0,
"latency_ms": 110,
"content_type": "text/html",
"security_headers": {
"x_content_type_options": true,
"content_security_policy": false,
"strict_transport_security": true
}
}
}
},
"schema": {
"type": "object",
"$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": [
"url"
],
"properties": {
"url": {
"type": "string",
"format": "uri",
"maxLength": 2048
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/npm-package-intel",
"mimeType": "application/json",
"description": "Check whether an npm package is deprecated or vulnerable before installing it, including vulnerabilities, license, maintenance, freshness, dependency health, and package.json risk signals."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"package": "hono",
"version": "4.13.3"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"license": "MIT",
"package": "hono",
"version": "4.13.3",
"deprecated": false,
"published_at": "2026-08-19T00:00:00.000Z",
"vulnerabilities": 0
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"package"
],
"properties": {
"package": {
"type": "string",
"maxLength": 214,
"minLength": 1
},
"version": {
"type": "string",
"maxLength": 64
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/commerce-decision",
"mimeType": "application/json",
"description": "Before an autonomous agent pays an x402 challenge, bind the request, accepted payment offer, and machine spending policy into a deterministic GO/WARN/BLOCK decision with SHA-256 commitments."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"policy": {
"allowed_networks": [
"eip155:8453"
],
"spend_24h_atomic": "700000",
"max_amount_atomic": "50000",
"max_per_day_atomic": "5000000"
},
"request": {
"body": {
"symbol": "ETH"
},
"method": "POST",
"resource": "https://seller.example/v1/data"
},
"payment_required": {
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7b7cC6A8Bf10A74A5f7",
"payTo": "0x1111111111111111111111111111111111111111",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"x402Version": 2
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"decision": "GO",
"offer_hash": "...",
"policy_hash": "...",
"policy_valid": true,
"request_hash": "...",
"preflight_root": "...",
"selected_offer": {
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453"
}
}
}
},
"schema": {
"type": "object",
"$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": [
"request",
"payment_required",
"policy"
],
"properties": {
"policy": {
"type": "object",
"properties": {
"allowed_assets": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 32
},
"allowed_payees": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 64
},
"blocked_payees": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 64
},
"allowed_networks": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 32
},
"spend_24h_atomic": {
"type": "string",
"pattern": "^[0-9]+$"
},
"max_amount_atomic": {
"type": "string",
"pattern": "^[0-9]+$"
},
"max_per_day_atomic": {
"type": "string",
"pattern": "^[0-9]+$"
},
"max_timeout_seconds": {
"type": "integer",
"maximum": 3600,
"minimum": 1
}
},
"additionalProperties": false
},
"request": {
"type": "object",
"required": [
"resource"
],
"properties": {
"body": {},
"method": {
"type": "string",
"maxLength": 16
},
"resource": {
"type": "string",
"maxLength": 2048,
"minLength": 1
},
"parameters": {
"type": "object"
},
"content_type": {
"type": "string",
"maxLength": 128
}
},
"additionalProperties": false
},
"payment_required": {
"type": "object",
"required": [
"x402Version",
"accepts"
],
"properties": {
"accepts": {
"type": "array",
"items": {
"type": "object"
},
"maxItems": 16,
"minItems": 1
},
"resource": {
"type": "object"
},
"extensions": {
"type": "object"
},
"x402Version": {
"enum": [
2
],
"type": "integer"
}
},
"additionalProperties": true
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "200000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/dependency-upgrade-go-no-go",
"mimeType": "application/json",
"description": "Compare current and target npm versions and return GO/WARN/BLOCK plus UPGRADE/DEFER/BLOCK guidance, bounded semver risk, OSV security implications, recommended tests, and explicit NOT_PROVEN runtime, peer, migration, and ecosystem compatibility boundaries."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"package": "hono",
"runtime": "cloudflare-workers",
"framework": "hono",
"target_version": "4.13.3",
"current_version": "4.13.2"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"score": 0.84,
"verdict": "GO",
"upgrade_verdict": "UPGRADE",
"breaking_changes": {
"state": "NOT_PROVEN",
"version_change": "PATCH"
},
"recommended_tests": [
"Install/resolve the target dependency in the actual caller lockfile."
],
"runtime_compatibility": {
"state": "NOT_PROVEN"
},
"security_implications": {
"state": "SUPPORTED",
"target_osv_records": 0,
"current_osv_records": 0
},
"peer_dependency_conflicts": {
"state": "NOT_PROVEN"
}
}
}
},
"schema": {
"type": "object",
"$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": [
"package",
"current_version",
"target_version"
],
"properties": {
"package": {
"type": "string",
"maxLength": 214,
"minLength": 1
},
"runtime": {
"type": "string",
"maxLength": 128
},
"framework": {
"type": "string",
"maxLength": 128
},
"constraints": {
"type": "array",
"items": {
"type": "string",
"maxLength": 4000
},
"maxItems": 32
},
"target_version": {
"type": "string",
"maxLength": 64,
"minLength": 1
},
"current_version": {
"type": "string",
"maxLength": 64,
"minLength": 1
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "500000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/agent-decision-preflight",
"mimeType": "application/json",
"description": "Before an autonomous coding agent installs or adopts software, return a bounded GO, WARN, or BLOCK decision with evidence and a portable SALT19 verification receipt."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"target": {
"package": "hono",
"version": "4.13.3"
},
"constraints": {
"require_license": true,
"max_vulnerabilities": 0
},
"decision_type": "npm_dependency"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"score": 100,
"reasons": [
"No OSV vulnerability records returned for this package/version."
],
"receipt": {
"evidence_sha256": "...",
"verification_url": "https://api.salt19.com/receipts/..."
},
"verdict": "GO",
"evidence": {
"package": "hono",
"version": "4.13.3",
"vulnerabilities": 0
},
"confidence": 0.95
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"decision_type",
"target"
],
"properties": {
"target": {
"type": "object",
"properties": {
"repo": {
"type": "string",
"maxLength": 512
},
"package": {
"type": "string",
"maxLength": 214,
"minLength": 1
},
"version": {
"type": "string",
"maxLength": 64
}
},
"additionalProperties": false
},
"constraints": {
"type": "object",
"properties": {
"require_latest": {
"type": "boolean"
},
"require_license": {
"type": "boolean"
},
"max_days_since_push": {
"type": "integer",
"maximum": 3650,
"minimum": 1
},
"max_vulnerabilities": {
"type": "integer",
"maximum": 100,
"minimum": 0
}
},
"additionalProperties": false
},
"decision_type": {
"enum": [
"npm_dependency",
"github_repository"
],
"type": "string"
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "350000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/repo-adoption-go-no-go",
"mimeType": "application/json",
"description": "Repository adoption decision for autonomous coding agents using public GitHub maintenance, archive, license, and repository-health evidence, with explicit UNKNOWN and NOT_PROVEN boundaries for dependency, security, compatibility, integration, and project-fit claims."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"repo": "cloudflare/workers-sdk"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"score": 0.86,
"verdict": "GO",
"findings": [
"Repository is neither archived nor disabled.",
"License declared as Apache-2.0."
],
"maintenance": {
"state": "SUPPORTED",
"days_since_push": 1
},
"project_fit": {
"state": "NOT_PROVEN"
},
"compatibility": {
"state": "NOT_PROVEN"
},
"license_assessment": {
"state": "SUPPORTED",
"declared_license": "Apache-2.0"
},
"security_indicators": {
"state": "NOT_PROVEN"
}
}
}
},
"schema": {
"type": "object",
"$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": [
"repo"
],
"properties": {
"repo": {
"type": "string",
"maxLength": 512
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "1250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/agent-code-change-risk-gate",
"mimeType": "application/json",
"description": "Static pre-merge risk gate for autonomous code changes: inspect a supplied unified diff for security-sensitive surfaces, destructive operations, architecture/constraint conflicts, test requirements, rollback risk, and bounded breaking-change risk before an agent merges or deploys."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"diff": "diff --git a/src/app.ts b/src/app.ts\n--- a/src/app.ts\n+++ b/src/app.ts\n@@ -1 +1 @@\n-old()\n+newer()",
"context": "Cloudflare Worker API",
"constraints": [
"Do not bypass authorization checks"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"verdict": "WARN",
"risk_score": 0.44,
"rollback_risk": "MEDIUM",
"security_flags": [],
"test_requirements": [
"Run API/MCP contract tests."
],
"architecture_conflicts": [],
"breaking_change_probability": {
"basis": "Uncalibrated static heuristic; not an empirical probability.",
"state": "PARTIALLY_SUPPORTED",
"value": 0.28
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"diff"
],
"properties": {
"diff": {
"type": "string",
"maxLength": 48000,
"minLength": 1
},
"context": {
"type": "string",
"maxLength": 4000
},
"constraints": {
"type": "array",
"items": {
"type": "string",
"maxLength": 4000
},
"maxItems": 32
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/commerce-verify",
"mimeType": "application/json",
"description": "Verify that an x402 v2 payment payload, settlement evidence, original request, accepted offer, spending policy, and delivered response are mutually bound; SALT19 operations can additionally be checked against authoritative D1 commercial state."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"request": {
"method": "POST",
"resource": "https://seller.example/v1/data"
},
"delivery": {
"result": "ok"
},
"settlement": {
"payer": "0x...",
"network": "eip155:8453",
"success": true,
"transaction": "0x..."
},
"payment_payload": {
"payload": {
"signature": "0x...",
"authorization": {
"to": "0x...",
"from": "0x...",
"nonce": "0x...",
"value": "20000",
"validAfter": "0",
"validBefore": "1999999999"
}
},
"accepted": {
"asset": "0x...",
"payTo": "0x...",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453"
},
"x402Version": 2
},
"payment_required": {
"accepts": [
{
"asset": "0x...",
"payTo": "0x...",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"x402Version": 2
},
"expected_delivery": {
"required_fields": [
"result"
]
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"verdict": "VERIFIED_LOCAL_EVIDENCE",
"limitations": [
"Caller-provided settlement evidence is structurally checked but not independently queried on-chain."
],
"commerce_root": "...",
"delivery_bound": true,
"payment_binding_valid": true,
"settlement_evidence_authority": "CALLER_PROVIDED"
}
}
},
"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": [
"request",
"payment_required",
"payment_payload",
"settlement",
"delivery"
],
"properties": {
"policy": {
"type": "object",
"properties": {
"allowed_assets": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 32
},
"allowed_payees": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 64
},
"blocked_payees": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 64
},
"allowed_networks": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 32
},
"spend_24h_atomic": {
"type": "string",
"pattern": "^[0-9]+$"
},
"max_amount_atomic": {
"type": "string",
"pattern": "^[0-9]+$"
},
"max_per_day_atomic": {
"type": "string",
"pattern": "^[0-9]+$"
},
"max_timeout_seconds": {
"type": "integer",
"maximum": 3600,
"minimum": 1
}
},
"additionalProperties": false
},
"request": {
"type": "object",
"required": [
"resource"
],
"properties": {
"body": {},
"method": {
"type": "string",
"maxLength": 16
},
"resource": {
"type": "string",
"maxLength": 2048,
"minLength": 1
},
"parameters": {
"type": "object"
},
"content_type": {
"type": "string",
"maxLength": 128
}
},
"additionalProperties": false
},
"delivery": {},
"settlement": {
"type": "object"
},
"payment_payload": {
"type": "object"
},
"payment_required": {
"type": "object",
"required": [
"x402Version",
"accepts"
],
"properties": {
"accepts": {
"type": "array",
"items": {
"type": "object"
},
"maxItems": 16,
"minItems": 1
},
"resource": {
"type": "object"
},
"extensions": {
"type": "object"
},
"x402Version": {
"enum": [
2
],
"type": "integer"
}
},
"additionalProperties": true
},
"expected_delivery": {
"type": "object",
"properties": {
"expected_sha256": {
"type": "string",
"pattern": "^[0-9a-fA-F]{64}$"
},
"required_fields": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 64
}
},
"additionalProperties": false
},
"target_salt19_operation_id": {
"type": "string",
"maxLength": 128,
"minLength": 8
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/model-memory-fit",
"mimeType": "application/json",
"description": "Can this AI model run on my graphics card? Estimate model memory requirements and check whether a quantized LLM fits available GPU VRAM before loading or local inference."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"vram_gb": 11,
"parameter_count_b": 7,
"quantization_bits": 4,
"runtime_overhead_ratio": 0.15
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"verdict": "FIT",
"vram_gib": 11,
"limitations": [
"KV cache and architecture-specific buffers are not modeled"
],
"headroom_gib": 7.25,
"estimated_total_gib": 3.75,
"estimated_weight_gib": 3.26
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"parameter_count_b",
"quantization_bits",
"vram_gb"
],
"properties": {
"vram_gb": {
"type": "number",
"maximum": 10000,
"minimum": 0.1
},
"parameter_count_b": {
"type": "number",
"maximum": 10000,
"minimum": 0.01
},
"quantization_bits": {
"type": "number",
"maximum": 32,
"minimum": 1
},
"runtime_overhead_ratio": {
"type": "number",
"maximum": 2,
"minimum": 0
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ebb16acddda257ca9d6e1eb64ac1fdf3891e84f",
"amount": "750000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.salt19.com/v1/agent-plan-verifier",
"mimeType": "application/json",
"description": "Verify an autonomous agent plan before execution for missing preconditions, destructive steps, unsafe ordering, goal misalignment, constraint violations, and repair actions, returning a bounded GO/WARN/BLOCK result."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"goal": "Safely deploy the tested Worker change",
"plan": [
"Inspect repository status",
"Run focused tests",
"Deploy through the guarded workflow"
],
"constraints": [
"Do not deploy before validation"
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"score": 1,
"repairs": [],
"verdict": "GO",
"unsafe_steps": [],
"ordering_errors": [],
"constraint_violations": [],
"missing_preconditions": []
}
}
},
"schema": {
"type": "object",
"$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": [
"goal",
"plan"
],
"properties": {
"goal": {
"type": "string",
"maxLength": 4000,
"minLength": 1
},
"plan": {
"type": "array",
"items": {
"type": "string",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 64,
"minItems": 1
},
"constraints": {
"type": "array",
"items": {
"type": "string",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 32
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}
] OVER TIME
All charts use the 24h selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/salt19-agent-utility-grid/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.
UPTIME
24h UPTIME 100%
RESPONSE TIME
AVG RESP 1009ms
PRICE (captured 402, USD)
Median across 14 endpoints. Use the selector to isolate one.
SUB-SCORES (uptime + x402 compliance)
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
PILLARS OVER TIME (measured)
price percentile in Verification
site signals present (of 6)
Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.
VOLUME (on-chain settlement, USD)
DISTINCT BUYERS
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-08-31 · last up 2026-09-01
- 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 (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 1130ms
● OK 835ms
● OK 851ms
● OK 1080ms
● OK 508ms
● OK 939ms
● OK 1041ms
● OK 386ms
● OK 1258ms
● OK 936ms
● OK 490ms
● OK 1427ms
● OK 406ms
● OK 994ms
● OK 1152ms
● OK 1359ms
● OK 361ms
● OK 1303ms
EMBED THIS BADGE
// HTML
<a href="https://x402-list.com/services/salt19-agent-utility-grid?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/salt19-agent-utility-grid.svg" alt="SALT19 Agent Utility Grid listed on x402-list" height="28"> </a>
// Markdown
[](https://x402-list.com/services/salt19-agent-utility-grid?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/salt19-agent-utility-grid?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/salt19-agent-utility-grid.svg?data=uptime" alt="SALT19 Agent Utility Grid uptime on x402-list" height="28"> </a>