AIMarket
HISTOR pre-flight for an MCP server: its signed record in the HISTOR transparency log — when the tool set was first seen, whether it changed, what the pattern scan found. Never contacts the server asked about.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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 0.001 USDC on Base to 0x1218…6Ad0a. The signed payment is good for 5 minutes.
- Paid to
- 0x1218…6Ad0a
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 1000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x1218ff36C5d2e3B6A565CdB1A8B1AcCFc606Ad0a",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"endpoint": "https://mcp.redu.cloud/mcp"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"schema": {
"type": "object",
"required": [
"status",
"service",
"source",
"check"
],
"properties": {
"check": {
"type": "object",
"required": [
"type",
"checkedAt",
"match"
],
"properties": {
"log": {
"type": "object",
"description": "the signed tree head the answer was given under"
},
"note": {
"type": "string"
},
"type": {
"type": "string",
"const": "histor.check/v1"
},
"match": {
"enum": [
"same",
"different",
"previously-observed",
"not-observed",
"not-listed",
"no-digest"
],
"type": "string"
},
"query": {
"type": "object"
},
"issuer": {
"type": "string",
"description": "did:key of the log"
},
"target": {
"type": [
"object",
"null"
],
"description": "the server HISTOR knows by this endpoint or name"
},
"observed": {
"type": [
"object",
"null"
],
"description": "HISTOR's latest observation of its tool set"
},
"checkedAt": {
"type": "string",
"description": "ISO 8601 UTC"
},
"signature": {
"type": "object"
},
"patternScan": {
"type": "object",
"properties": {
"status": {
"type": "string"
}
}
}
},
"description": "HISTOR's signed answer, histor.check/v1 (https://github.com/alexar76/histor/blob/main/docs/api.md)"
},
"source": {
"type": "string",
"description": "the HISTOR instance that answered"
},
"status": {
"type": "string",
"const": "ok"
},
"service": {
"type": "string",
"const": "histor-check"
}
}
},
"example": {
"check": {
"type": "histor.check/v1",
"match": "no-digest",
"target": {
"name": "cloud.redu/mcp"
},
"checkedAt": "2026-10-25T18:18:52Z"
},
"source": "https://histor.modelmarket.dev",
"status": "ok",
"service": "histor-check"
}
}
},
"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",
"properties": {
"name": {
"type": "string",
"description": "registry name, e.g. io.github.owner/server (send this or endpoint)"
},
"endpoint": {
"type": "string",
"description": "https URL of the MCP server (send this or name)"
}
}
},
"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": [
"status",
"service",
"source",
"check"
],
"properties": {
"check": {
"type": "object",
"required": [
"type",
"checkedAt",
"match"
],
"properties": {
"log": {
"type": "object",
"description": "the signed tree head the answer was given under"
},
"note": {
"type": "string"
},
"type": {
"type": "string",
"const": "histor.check/v1"
},
"match": {
"enum": [
"same",
"different",
"previously-observed",
"not-observed",
"not-listed",
"no-digest"
],
"type": "string"
},
"query": {
"type": "object"
},
"issuer": {
"type": "string",
"description": "did:key of the log"
},
"target": {
"type": [
"object",
"null"
],
"description": "the server HISTOR knows by this endpoint or name"
},
"observed": {
"type": [
"object",
"null"
],
"description": "HISTOR's latest observation of its tool set"
},
"checkedAt": {
"type": "string",
"description": "ISO 8601 UTC"
},
"signature": {
"type": "object"
},
"patternScan": {
"type": "object",
"properties": {
"status": {
"type": "string"
}
}
}
},
"description": "HISTOR's signed answer, histor.check/v1 (https://github.com/alexar76/histor/blob/main/docs/api.md)"
},
"source": {
"type": "string",
"description": "the HISTOR instance that answered"
},
"status": {
"type": "string",
"const": "ok"
},
"service": {
"type": "string",
"const": "histor-check"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"s": [
"cdp_sdk_server"
]
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
},
"eip2612GasSponsoring": {},
"erc20ApprovalGasSponsoring": {}
}Provenance
- Seen in the source catalog
- 2026-10-27 10:09Z
- Last indexed by Roundhouse
- 2026-10-29 01:30Z
- Last enriched (probe, favicon, geo)
- 2026-10-02 05:45Z
- 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. 32 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 AIMarket 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=AIMarket' 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://modelmarket.dev/x402/histor-check, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.