BlockRun.AI
OpenAI-shaped Responses API — the native protocol for Codex CLI and agents that need tools + reasoning on gpt-5.x.
Offering
- Provider
- BlockRun.AI
- Method
- POST
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Creative
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://arc.blockrun.ai/api/v1/responses- MIME type
- application/json
- First seen
- 2026-10-16T01:50:03.601Z
- Last seen
- Tags
- X402, AI, blockchain, ai-&-ml
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 161007 atomic units
Atomic price: 161007 · Network: eip155:5042 · Asset: 0x3600000000000000000000000000000000000000 · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:5042",
"asset": "0x3600000000000000000000000000000000000000",
"amount": "161007",
"payTo": "0x634D274e67DafaF76C54153aa113906a606e1E0B"
}
]Observed health
- Status
- Healthy
- Latest latency
- 69 ms
- Average latency
- 205 ms
- HTTP status
- 204
- Last checked
- Reachability
- 100% over 12 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"body": {
"type": "object",
"required": [
"model",
"input"
],
"properties": {
"text": {
"type": "object",
"description": "Text/format options (json_object, json_schema, verbosity)."
},
"input": {
"oneOf": [
{
"type": "string"
},
{
"type": "array",
"items": {
"type": "object"
}
}
],
"description": "String, or array of Responses input items (messages, function_call_output, reasoning replays, …)."
},
"model": {
"enum": [
"openai/gpt-6-astra",
"openai/gpt-6-sol",
"openai/gpt-6-luna",
"openai/gpt-5.6-sol",
"openai/gpt-5.6-terra",
"openai/gpt-5.6-luna",
"openai/gpt-5.6-sol-pro",
"openai/gpt-5.6-terra-pro",
"openai/gpt-5.6-luna-pro",
"openai/gpt-5.5",
"openai/gpt-5.5-pro",
"openai/chat-latest",
"openai/gpt-5.4",
"openai/gpt-5.4-pro",
"openai/gpt-5.1",
"openai/gpt-5.2",
"openai/gpt-5.4-mini",
"openai/gpt-5-mini",
"openai/gpt-5.4-nano",
"openai/gpt-5.2-pro",
"openai/gpt-5.3-codex",
"openai/gpt-4.1",
"openai/gpt-4.1-mini",
"openai/gpt-4.1-nano",
"openai/gpt-4o",
"openai/gpt-4o-mini",
"openai/o1",
"openai/o3",
"openai/o3-mini",
"openai/o4-mini"
],
"type": "string",
"description": "OpenAI model id (gpt-5.x, o-series, codex; with or without the openai/ prefix)."
},
"tools": {
"type": "array",
"items": {
"type": "object"
},
"description": "Responses tool definitions (function, web_search, …)."
},
"top_p": {
"type": "number",
"maximum": 1,
"minimum": 0
},
"stream": {
"type": "boolean",
"description": "Server-Sent Events stream of native Responses events."
},
"include": {
"type": "array",
"items": {
"type": "string"
},
"description": "Extra output fields, e.g. reasoning.encrypted_content."
},
"reasoning": {
"type": "object",
"description": "Reasoning config, e.g. { effort: \"high\" }."
},
"temperature": {
"type": "number",
"maximum": 2,
"minimum": 0
},
"tool_choice": {
"description": "Responses tool_choice spec."
},
"instructions": {
"type": "string",
"description": "System/developer instructions."
},
"max_output_tokens": {
"type": "integer",
"minimum": 1,
"description": "Maximum tokens to generate (bounds the x402 quote)."
}
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
}Output schema
{
"type": "object",
"properties": {
"example": {
"type": "object",
"properties": {
"usage": {
"type": "object"
},
"choices": {
"type": "array"
}
}
}
}
}