Api Endpoint

BlockRun.AI

Anthropic-compatible Messages API — pay per token with USDC on Base

Open interactive test console

Offering

Provider: BlockRun.AI
Method: POST
Offering type: Api Endpoint
Transport type: http
Category: Api
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://blockrun.ai/api/v1/messages
MIME type: Not provided
First seen: 2026-10-16T01:50:19.913Z
Last seen: 2026-11-01T14:57:12.185Z
Tags: AI, Inference, LLM, gateway

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.011 USDC
Atomic price: 11000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "11000",
    "payTo": "0xe9030014F5DAe217d0A152f02A043567b16c1aBf"
  }
]

Observed health

Status: Healthy
Latest latency: 106 ms
Average latency: 426 ms
HTTP status: 204
Last checked: 2026-11-04T02:46:07.022Z
Reachability: 100% over 13 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "properties": {
    "body": {
      "properties": {
        "max_tokens": {
          "description": "Max output tokens the model may generate",
          "type": "integer"
        },
        "messages": {
          "description": "Conversation history, Anthropic Messages API shape",
          "type": "array"
        },
        "model": {
          "description": "Anthropic-style model id (e.g. anthropic/claude-opus-5, anthropic/claude-sonnet-4.6)",
          "type": "string"
        },
        "stream": {
          "description": "Stream the response as SSE",
          "type": "boolean"
        },
        "system": {
          "description": "Optional system prompt",
          "type": "string"
        },
        "temperature": {
          "description": "Sampling temperature 0–1",
          "type": "number"
        },
        "tools": {
          "description": "Optional tool definitions for tool use",
          "type": "array"
        }
      },
      "required": [
        "model",
        "max_tokens",
        "messages"
      ],
      "type": "object"
    }
  },
  "type": "object"
}

Output schema

{
  "properties": {
    "input": {
      "properties": {
        "body": {
          "properties": {
            "max_tokens": {
              "description": "Max output tokens the model may generate",
              "type": "integer"
            },
            "messages": {
              "description": "Conversation history, Anthropic Messages API shape",
              "type": "array"
            },
            "model": {
              "description": "Anthropic-style model id (e.g. anthropic/claude-opus-5, anthropic/claude-sonnet-4.6)",
              "type": "string"
            },
            "stream": {
              "description": "Stream the response as SSE",
              "type": "boolean"
            },
            "system": {
              "description": "Optional system prompt",
              "type": "string"
            },
            "temperature": {
              "description": "Sampling temperature 0–1",
              "type": "number"
            },
            "tools": {
              "description": "Optional tool definitions for tool use",
              "type": "array"
            }
          },
          "required": [
            "model",
            "max_tokens",
            "messages"
          ],
          "type": "object"
        }
      },
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "content": {
              "type": "array"
            },
            "id": {
              "type": "string"
            },
            "model": {
              "type": "string"
            },
            "role": {
              "type": "string"
            },
            "type": {
              "type": "string"
            },
            "usage": {
              "type": "object"
            }
          },
          "type": "object"
        }
      },
      "type": "object"
    }
  },
  "type": "object"
}