← The evidence ledger
Evidence row 61581
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agent402-arb.rosariovitale0096.workers.dev/llm/claude-opus-5.5
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 9f27f1af9a4f9ebef0ce243efd99180179ac32903c20ab1f3e17e9e5245e9d4a
- Leaf
- 0xaf117e5ca22bbc5096ae0337ab83a3a7caceecfc4dc40955d17b628f8af4e38f
What was observed
{
"endpoints": [
[
"x402",
"https://agent402-arb.rosariovitale0096.workers.dev/llm/claude-opus-5.5"
]
],
"name": "Claude Opus 5.5 API",
"owner_address": "0xf7eaf699c6e55887184809c57d597a64ab86d493",
"raw": {
"accepts": [
{
"amount": "1400",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"paymentFlow": "upfront",
"version": "2"
},
"maxTimeoutSeconds": 180,
"network": "eip155:8453",
"payTo": "0xf7eaf699C6E55887184809c57d597a64aB86d493",
"scheme": "exact"
}
],
"description": "Claude Opus 5.5 API (anthropic/claude-opus-5.5): LLM inference via OpenAI-compatible chat completions, pay per call in USDC on Base with x402. No API key, no account. Suited for AI agents and scripts that need Claude Opus 5.5 on demand. When listed, this request cost 30% less than the same request on BlockRun. Streaming and function calling supported. Exact price in the 402 quote before payment; automatic refund if the model fails to answer.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"max_tokens": 12,
"messages": [
{
"content": "Reply with OK",
"role": "user"
}
],
"model": "anthropic/claude-opus-5.5",
"stream": false
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"choices": [
{
"finish_reason": "stop",
"index": 0,
"message": {
"content": "OK",
"role": "assistant"
}
}
],
"created": 1791979200,
"id": "chatcmpl-7f3c2a91",
"model": "anthropic/claude-opus-5.5",
"object": "chat.completion",
"usage": {
"completion_tokens": 1,
"prompt_tokens": 9,
"total_tokens": 10
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"max_tokens": {
"description": "Optional, default 4096",
"maximum": 16384,
"minimum": 1,
"type": "integer"
},
"messages": {
"items": {
"properties": {
"content": {
"type": [
"string",
"array",
"null"
]
},
"role": {
"enum": [
"system",
"user",
"assistant",
"tool",
"developer"
],
"type": "string"
}
},
"required": [
"role"
],
"type": "object"
},
"minItems": 1,
"type": "array"
},
"model": {
"description": "Optional: fixed by the route (anthropic/claude-opus-5.5)",
"type": "string"
},
"response_format": {
"type": "object"
},
"stream": {
"description": "true: server-sent events after payment",
"type": "boolean"
},
"temperature": {
"maximum": 2,
"minimum": 0,
"type": "number"
},
"tools": {
"type": "array"
}
},
"required": [
"messages"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"queryParams": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"choices": {
"items": {
"required": [
"index",
"message",
"finish_reason"
],
"type": "object"
},
"type": "array"
},
"id": {
"type": "string"
},
"model": {
"type": "string"
},
"object": {
"const": "chat.completion"
},
"usage": {
"type": "object"
}
},
"required": [
"id",
"object",
"model",
"choices"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1792034933/bazaar-icons/c63879d0dabbf36c.png",
"lastUpdated": "2026-10-15T15:08:56.624Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-15T15:08:55.474Z"
},
"resource": "https://agent402-arb.rosariovitale0096.workers.dev/llm/claude-opus-5.5",
"serviceName": "Claude Opus 5.5 API",
"tags": [
"claude-opus-5.5",
"claude",
"anthropic",
"llm",
"chat-completions"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Claude Opus 5.5 API (anthropic/claude-opus-5.5): LLM inference via OpenAI-compatible chat completions, pay per call in USDC on Base with x402. No API key, no account. Suited for AI agents and scripts that need Claude Opus 5.5 on demand. When listed, this request cost 30% less than the same request on BlockRun. Streaming and function calling supported. Exact price in the 402 quote before payment; automatic refund if the model fails to answer."
}What the leaf hashes
{"body":"9f27f1af9a4f9ebef0ce243efd99180179ac32903c20ab1f3e17e9e5245e9d4a","id":61581,"kind":"listing","method":"baseline/1","observed_us":1793025451152498,"prev":null,"subject":"x402_bazaar:https://agent402-arb.rosariovitale0096.workers.dev/llm/claude-opus-5.5","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0xaf11859dc87740f2db01c7fc267be2e36b633754caa91bf4ef17a9703497a9f0
- 0xe221ced04bc2bd9458f21c445021f5b596584814a8ef4be954360f9f71eaea8b
- 0x3338be9158c2b032b5d119b67323a2bc877e07e9dae86b4a002acb94f7d9f4ce
- 0x6351665fa9598990136af8da7f73b9edcb1d787389391ebf037f2c24df044dfd
- 0xd1be5ee472cfaaa8589ab279635ccb0f40c7a57d90e10eb31af09c58cfacb8e6
- 0xb49515d8ae4585c2db4c5dc22717996f19a672fe5a35937af231d977747535be
- 0xe8a4d12672cd3596cfbb43f872454682473c3e9cf03ea412192e1e9db645918c
- 0xc4467f6f91c72b18ff817007efd0ef2b7969e758ea47595c67aba5b3a882b646
- 0xac97b06775665004c51ae66ecc29bd1a92b27f193962906447c8a24f5640bab8
- 0x3107fa81688f3046afda2f948045d364316b247469a8a303ed99d9184e826a89
- 0x863ea2425c8cc958ae125e95c3e3170c9ac576a8c72849cb3f596e616b6fd6a8
- 0xd17258d4f01d074dcaf38f36218b36058144c3d50c3b488953a815c54d6674d2
- 0xe292b5a99219f136bce6647ce74b21240a1c7331d2475b1839220fd363c94217
- 0x3b4dba7d874fc323b0a364140a9c60f37bf547fe671897653118a9873fe03420
- 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
- 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
- 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae