paygent
Machine-enforceable safety verdicts for AI agents over x402. Guard prompt injection, unsafe tool calls, risky signatures - pay per call, no signup.
DataLiveeip155:8453Exactvia wellknown:paygent.obsmetrics.com
x402-securityCounterparty-riskPayment-safetyAgent-commerceTrust-auditPre-settleSecurityx402
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
$5.06
Verified settled volume
6 settlements proven x402 by their on-chain EIP-3009 marker.
$2.00
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x9bd29d8259Ac33Dc4d78D22ABF547eF2e518e2a5The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9bd29d8259Ac33Dc4d78D22ABF547eF2e518e2a5",
"amount": "2000000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
],
"resource": {
"url": "https://paygent.obsmetrics.com/agents/x402-trust-audit/run",
"tags": [
"x402-security",
"counterparty-risk",
"payment-safety",
"agent-commerce",
"trust-audit",
"pre-settle",
"security",
"x402"
],
"mimeType": "application/json",
"description": "Vet an x402 counterparty before settling USDC: scores the advertised payment requirements AND (when supplied) the EIP-3009 authorization you are about to sign. Returns a machine-enforceable trust verdict (per-entry scores, coverage-honest trustScore, spend-constraint + tamper-evident fingerprint) for buyer agents and wallet/spend-policy layers. No endpoint fetch.",
"serviceName": "paygent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"paymentRequirements": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.example.com/data",
"description": "example x402 resource",
"maxAmountRequired": "1000000",
"maxTimeoutSeconds": 300
}
],
"selectedOptionIndex": 0
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"advisory": "Requirements are canonical; no authorization supplied, so the charge is not bound and auto-settle is unsafe.",
"coverage": 0.5,
"perEntry": [
{
"index": 0,
"score": 72,
"checks": 16
}
],
"trustScore": 72,
"schemaVersion": "1.0",
"autoSettleSafe": false,
"recommendation": "proceed_with_caution",
"scoredFingerprint": "sha256:3b2f...e91"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"required": [
"paymentRequirements"
],
"properties": {
"context": {
"type": "string",
"description": "Optional free-form context."
},
"expected": {
"type": "object",
"properties": {
"asset": {
"type": "string",
"description": "Expected asset contract address"
},
"payTo": {
"type": "string"
},
"chainId": {
"type": "number"
},
"network": {
"type": "string"
},
"identity": {
"type": "string"
},
"maxAmountAtomic": {
"type": "string"
}
},
"description": "Optional caller expectations."
},
"endpointUrl": {
"type": "string",
"description": "Resource URL being paid (context only; never fetched)."
},
"spendPolicy": {
"type": "object",
"properties": {
"maxUsd": {
"type": "number"
},
"allowedAssets": {
"type": "array",
"items": {
"type": "string"
}
},
"allowedNetworks": {
"type": "array",
"items": {
"type": "string"
}
},
"allowedFacilitators": {
"type": "array",
"items": {
"type": "string"
}
}
},
"description": "Optional buyer spend policy to evaluate against and to pin facilitators."
},
"paymentPayload": {
"description": "The UNSIGNED EIP-3009 authorization the buyer is about to sign: { authorization|message: {from,to,value,validAfter,validBefore,nonce}, domain: {name,version,chainId,verifyingContract} }. Lets the audit bind the menu to the actual charge (server-enforced to/value/verifyingContract/chainId). Omit to vet requirements only - but then the verdict is never auto-settle-safe."
},
"serverMetadata": {
"description": "Optional server metadata the caller already holds (context only; not fetched)."
},
"paymentRequirements": {
"description": "The x402 payment requirements from the counterparty: the 402 `accepts` array, or a single object."
},
"selectedOptionIndex": {
"type": "number",
"description": "Index in the accepts array the buyer intends to settle (default 0). The verdict is scoped to it."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
2USDC≈ $2 USD
on Base · exact scheme
Pay 2 USDC on Base to 0x9bd2…8e2a5. The signed payment is good for 10 minutes.
- Paid to
- 0x9bd2…8e2a5
- USD Coin contract
- 0x8335…02913
- Payment window
- 10 minutes
- As published
- 2000000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9bd29d8259Ac33Dc4d78D22ABF547eF2e518e2a5",
"amount": "2000000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"paymentRequirements": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0x0E84dDEdAaE6A779c462C22a59F301EC31B6b808",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.example.com/data",
"description": "example x402 resource",
"maxAmountRequired": "1000000",
"maxTimeoutSeconds": 300
}
],
"selectedOptionIndex": 0
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"advisory": "Requirements are canonical; no authorization supplied, so the charge is not bound and auto-settle is unsafe.",
"coverage": 0.5,
"perEntry": [
{
"index": 0,
"score": 72,
"checks": 16
}
],
"trustScore": 72,
"schemaVersion": "1.0",
"autoSettleSafe": false,
"recommendation": "proceed_with_caution",
"scoredFingerprint": "sha256:3b2f...e91"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"required": [
"paymentRequirements"
],
"properties": {
"context": {
"type": "string",
"description": "Optional free-form context."
},
"expected": {
"type": "object",
"properties": {
"asset": {
"type": "string",
"description": "Expected asset contract address"
},
"payTo": {
"type": "string"
},
"chainId": {
"type": "number"
},
"network": {
"type": "string"
},
"identity": {
"type": "string"
},
"maxAmountAtomic": {
"type": "string"
}
},
"description": "Optional caller expectations."
},
"endpointUrl": {
"type": "string",
"description": "Resource URL being paid (context only; never fetched)."
},
"spendPolicy": {
"type": "object",
"properties": {
"maxUsd": {
"type": "number"
},
"allowedAssets": {
"type": "array",
"items": {
"type": "string"
}
},
"allowedNetworks": {
"type": "array",
"items": {
"type": "string"
}
},
"allowedFacilitators": {
"type": "array",
"items": {
"type": "string"
}
}
},
"description": "Optional buyer spend policy to evaluate against and to pin facilitators."
},
"paymentPayload": {
"description": "The UNSIGNED EIP-3009 authorization the buyer is about to sign: { authorization|message: {from,to,value,validAfter,validBefore,nonce}, domain: {name,version,chainId,verifyingContract} }. Lets the audit bind the menu to the actual charge (server-enforced to/value/verifyingContract/chainId). Omit to vet requirements only - but then the verdict is never auto-settle-safe."
},
"serverMetadata": {
"description": "Optional server metadata the caller already holds (context only; not fetched)."
},
"paymentRequirements": {
"description": "The x402 payment requirements from the counterparty: the 402 `accepts` array, or a single object."
},
"selectedOptionIndex": {
"type": "number",
"description": "Index in the accepts array the buyer intends to settle (default 0). The verdict is scoped to it."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"type": "string",
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- —
- Last indexed by Roundhouse
- 2026-09-20 12:15Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 12:45Z
- x402 version
- 2
- Max timeout
- 600s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service paygent and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=paygent' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://paygent.obsmetrics.com/agents/x402-trust-audit/run, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.