← The evidence ledger
Evidence row 61592
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agent402-arb.rosariovitale0096.workers.dev/llm/gpt-5.5
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 385096ba4b7d1a67003def84c5fe5154569397e9a7c396289ef6d705447b3389
- Leaf
- 0xf04f8b27dd36bad2edd3c794c59c298084e5a104ea9aa8c6c620401f9122c21b
What was observed
{
"endpoints": [
[
"x402",
"https://agent402-arb.rosariovitale0096.workers.dev/llm/gpt-5.5"
]
],
"name": "GPT-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": "GPT-5.5 API (openai/gpt-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 GPT-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": "openai/gpt-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": "openai/gpt-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 (openai/gpt-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": "2026-10-15T16:49:10.473Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-15T16:49:09.679Z"
},
"resource": "https://agent402-arb.rosariovitale0096.workers.dev/llm/gpt-5.5",
"serviceName": "GPT-5.5 API",
"tags": [
"gpt-5.5",
"gpt",
"openai",
"llm",
"chat-completions"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "GPT-5.5 API (openai/gpt-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 GPT-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":"385096ba4b7d1a67003def84c5fe5154569397e9a7c396289ef6d705447b3389","id":61592,"kind":"listing","method":"baseline/1","observed_us":1793025451169096,"prev":null,"subject":"x402_bazaar:https://agent402-arb.rosariovitale0096.workers.dev/llm/gpt-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).
- 0xf04fc8a9cd75c31efd883347e2128fa15f164c25b157a7ab3b508fb511ca7e4d
- 0x8a6307c3f92a41a6fdc78bdbb97d440c21c475f8c4cda2569d3232822cb54e25
- 0x995e35d12864c228a3398384549eba03b3d3c68d4f2e6042c34d6f70c209cd8b
- 0x971f4cc8f0e06544ae85a9f18ec221f62c79208241c9ae8b2b1397ccae5d4a13
- 0x79fb3ac729313dfd19263863899608c00c06ff3521e4dd61c94da2ad3749d3ba
- 0xfbc156782758903687e3505a9b24e49c09e095a34893a292c321d1f3ccd0a5d1
- 0x4889cc9ce433615bf8a528fe36a8e0d26e55ef949429fd8aa64005f11f20e256
- 0x5e6f6554b22ecf4db12db563b4e1c2704c40657ed313117ede4bdfaf714dee49
- 0xc75ce0cd46f8a59177489cb9a7e54917eec406d88c64c887fbf9be19288f7781
- 0x3596b9717d8451909e6f610690c73b18907f0580f92978c2a8862668158a8f31
- 0xe34b4862878cc4926f0e4b84b3f031ef1f0cf0de9bf8fb3c13adbc6abc010ee1
- 0xb0cc0b4ce5a68e83d3e3e55b0387f828adf6f5eb6cfa666d75f6e16ed9d89c1f
- 0x746e9e5b6765727b6b96f41204cc115b0302259f6c67be0cf0efbf245601d500
- 0x614d844c9e0509d9f9e63697aa2935555bce5f13695a8dc0047aa9e9898d70b3
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- 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae