PayeeGuard
Deterministic payment-destination preflight for agents, paid per call.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.01 USDC on Base to 0x9876…12690. The signed payment is good for 1 minute.
- Paid to
- 0x9876…12690
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9876af0F6D8Ed5155Cd02d1ca56D128601612690",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"address": "0x7a3D40f7c6B18E5920Ab7C3e5d81f4A04E6F8a0D",
"expected_address": "0x7A3D9C1b5e2F4A8d6C0b3E5F7a9D1c2b4e6f8A0d"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"result": {
"asset": {
"kind": "erc20",
"exists": null,
"symbol": null,
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"sinks": {
"is_precompile": false,
"is_burn_address": false,
"is_zero_address": false
},
"address": {
"input": "0x7a3D40f7c6B18E5920Ab7C3e5d81f4A04E6F8a0D",
"canonical": "0x7a3D40f7c6B18E5920Ab7C3e5d81f4A04E6F8a0D"
},
"checksum": {
"form": "mixed",
"valid": true
},
"self_send": {
"matches": null,
"present": false
},
"unresolved": [
"whether the asset is a deployed contract"
],
"can_receive": {
"basis": "erc20-balance-mapping",
"value": true
},
"destination": {
"is_contract": null,
"account_kind": "unknown"
},
"denylist_hits": [],
"expected_comparison": {
"match": "vanity_collision",
"edit_distance": 25,
"shared_prefix": 4,
"shared_suffix": 8,
"hamming_distance": 26
}
},
"verdict": "block",
"evidence": [
{
"code": "EXPECTED_ADDRESS_VANITY_COLLISION",
"detail": "Shares the first 4 and last 8 hex digits with the address you expected while differing throughout the middle: the signature of a ground look-alike.",
"severity": "critical"
}
],
"warnings": [],
"confidence": 1,
"risk_codes": [
"EXPECTED_ADDRESS_VANITY_COLLISION",
"ASSET_EXISTENCE_UNKNOWN"
],
"request_hash": "sha256:3f9a…c104",
"data_versions": {
"chain": "eip155:8453",
"policy": "2026-09-19",
"denylist": "2026-08-03.1"
},
"policy_version": "2026-09-19"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"title": "PayeeGuardRequest",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"address"
],
"properties": {
"from": {
"type": "string",
"pattern": "^0[xX][0-9a-fA-F]{40}$",
"description": "The sender, when you have one. Enables the self-send check."
},
"asset": {
"type": "string",
"default": "native",
"description": "\"native\" for ETH, or an ERC-20 contract address. Defaults to \"native\". The asset decides which receivability question is asked, and they have different answers."
},
"address": {
"type": "string",
"pattern": "^0[xX][0-9a-fA-F]{40}$",
"description": "The destination you are about to send to. Send it exactly as you hold it, casing included: the casing is the checksum, and normalising it before you ask destroys the evidence this endpoint checks."
},
"expected_address": {
"type": "string",
"pattern": "^0[xX][0-9a-fA-F]{40}$",
"description": "The address you believe the destination should be. Supplying it enables the comparison checks: exact match, case-only difference, small edit distance, and the shared prefix-and-suffix shape of a ground look-alike."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"ok",
"verdict",
"result",
"request_hash",
"data_versions"
],
"properties": {
"ok": {
"type": "boolean"
},
"result": {
"type": "object",
"properties": {
"asset": {
"type": "object"
},
"sinks": {
"type": "object"
},
"address": {
"type": "object"
},
"checksum": {
"type": "object"
},
"self_send": {
"type": "object"
},
"unresolved": {
"type": "array",
"items": {
"type": "string"
}
},
"can_receive": {
"type": "object",
"description": "value is true, false, or null when the bytecode does not decide it."
},
"destination": {
"type": "object"
},
"denylist_hits": {
"type": "array",
"items": {
"type": "object"
}
},
"expected_comparison": {
"type": [
"object",
"null"
]
}
}
},
"verdict": {
"enum": [
"allow",
"warn",
"block",
"unknown"
],
"type": "string",
"description": "Precedence: block, then unknown, then warn, then allow."
},
"evidence": {
"type": "array",
"items": {
"type": "object"
}
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"risk_codes": {
"type": "array",
"items": {
"type": "string"
}
},
"request_hash": {
"type": "string"
},
"data_versions": {
"type": "object"
},
"policy_version": {
"type": "string"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-24 07:39Z
- Last indexed by Roundhouse
- 2026-09-24 12:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-19 20:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 404
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
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service PayeeGuard 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=PayeeGuard' 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://payee.schemasure.com/v1/guard/payee, 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.