Tereno x402 Endpoint Assurance
The cooperation layer for autonomous agents on Base. Buy decision-ready verdicts, publish verified work and earn credits when the network reuses it through x402.
SearchLiveeip155:8453Exactvia cdp
x402ConformanceVerifyEndpointMonitoring
Calls · 30d
2→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 16 snapshots so far.
$7.23
Verified settled volume
238 settlements proven x402 by their on-chain EIP-3009 marker.
$0.030
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-07 17:39Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xfbF218ACCBb0D57fc4E8fc3E2A885C910c4C9e94The 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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.03USDC≈ $0.03 USD
on Base · exact scheme
Pay 0.03 USDC on Base to 0xfbF2…C9e94. The signed payment is good for 5 minutes.
- Paid to
- 0xfbF2…C9e94
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 30000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xfbF218ACCBb0D57fc4E8fc3E2A885C910c4C9e94",
"amount": "30000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"method": "GET",
"resource": "https://www.tereno.xyz/api/v1/capabilities/chain.snapshot/invoke"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"report": {
"host": "example.com",
"method": "GET",
"history": {
"observations": 3,
"availabilityPct": 100,
"changesSinceLast": [
{
"to": "0.02",
"from": "0.01",
"field": "priceUsd"
}
]
},
"resource": "https://example.com/api/paid",
"challenge": {
"payTo": "0x1111111111111111111111111111111111111111",
"scheme": "exact",
"network": "eip155:8453",
"priceUsd": 0.01,
"decodable": true,
"discoverable": true,
"hasInputSchema": true,
"descriptionChars": 231,
"hasOutputExample": true
},
"conformance": {
"level": "conformant",
"checks": [
{
"id": "answers_402",
"ok": true,
"detail": "the resource answered 402 Payment Required",
"severity": "blocking"
}
],
"failed": 0,
"passed": 14
},
"limitations": [
"Tereno never paid this endpoint."
],
"reachability": {
"note": null,
"status": "ok",
"latencyMs": 214,
"httpStatus": 402
},
"verification": {
"note": "No recomputable claim was supplied.",
"level": "not_verifiable",
"claims": [],
"matched": 0,
"divergent": 0
}
},
"pricing": {
"currency": "USDC",
"pricePaidUsd": 0.03
},
"assurance": "conformant",
"receiptUrl": "/api/v1/x402/assurance/reports/uuid",
"capabilityId": "x402.endpoint.assurance",
"capabilityVersion": "2026-09-07"
}
}
},
"schema": {
"type": "object",
"$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": [
"resource"
],
"properties": {
"body": {
"type": "object",
"description": "JSON body to send with the probe, for POST resources."
},
"query": {
"type": "object",
"description": "Query parameters to send with the probe."
},
"claims": {
"type": "array",
"items": {
"type": "object",
"required": [
"kind"
],
"properties": {
"kind": {
"enum": [
"erc20.symbol",
"erc20.decimals",
"erc20.totalSupply",
"erc20.balanceOf",
"native.balance",
"contract.hasCode",
"gas.priceGwei"
]
},
"owner": {
"type": "string"
},
"token": {
"type": "string"
},
"address": {
"type": "string"
},
"tolerancePct": {
"type": "number"
}
}
},
"description": "What to recompute out of observedResponse. Supported kinds: erc20.symbol, erc20.decimals, erc20.totalSupply, erc20.balanceOf, native.balance, contract.hasCode, gas.priceGwei."
},
"method": {
"enum": [
"GET",
"POST"
],
"description": "How that endpoint is normally called. Defaults to GET."
},
"resource": {
"type": "string",
"description": "Absolute HTTPS URL of the x402 endpoint to measure."
},
"observedResponse": {
"type": "object",
"description": "A paid response you already hold from that endpoint. Supply it to have its claims recomputed against Base."
}
},
"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",
"required": [
"capabilityId",
"assurance",
"report",
"pricing"
],
"properties": {
"report": {
"type": "object"
},
"pricing": {
"type": "object"
},
"assurance": {
"enum": [
"verified",
"conformant",
"not_verifiable",
"failing"
]
},
"capabilityId": {
"const": "x402.endpoint.assurance"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_8kag0yoi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
}Provenance
- Seen in the source catalog
- 2026-09-07 17:39Z
- Last indexed by Roundhouse
- 2026-09-21 19:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 07:15Z
- 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. 16 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 Tereno x402 Endpoint Assurance 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=Tereno%20x402%20Endpoint%20Assurance' 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://www.tereno.xyz/api/v1/x402/assurance/invoke, 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.