forgesignals.org
Third-party witness for an x402 transaction. Signs what the endpoint advertised right now, verifies a settlement transaction on Base against that advertised price and payee, and binds an optional party-submitted response hash - each claim labelled witnessed or asserted. Evidence, not a reputation score. Retrieval and verification of attestations are free.
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 0.02 USDC on Base to 0x4035…a6e2A. The signed payment is good for 5 minutes.
- Paid to
- 0x4035…a6e2A
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 20000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x403570a1F21fe14a3A80CaE4779de92eDdBa6e2A",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"url": "https://example.com/paid-api",
"settlement_tx": "0x...",
"response_sha256": "..."
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"id": "…",
"retrieve": "https://forgesignals.org/attestations/…",
"policy_id": "forge-policy/2026-08-17",
"attestation_version": "forge-attestation/0.1"
}
}
},
"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": [
"url"
],
"properties": {
"url": {
"type": "string",
"description": "the x402 endpoint the transaction was with"
},
"submitted_by": {
"type": "string",
"description": "optional label for who is submitting (buyer/seller)"
},
"request_nonce": {
"type": "string",
"description": "optional nonce tying the attestation to one specific request"
},
"settlement_tx": {
"type": "string",
"description": "optional Base tx hash of the USDC payment to verify on-chain"
},
"response_sha256": {
"type": "string",
"description": "optional sha256 of the response body you received; recorded as an ASSERTED claim, never as proof"
}
}
},
"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"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-17 21:38Z
- Last indexed by Roundhouse
- 2026-09-01 12:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 02:45Z
- x402 version
- 2
- Max timeout
- 300s
- 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. 9 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 forgesignals.org 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=forgesignals.org' 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://forgesignals.org/attest, 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.