BlockRun

{
  "name": "BlockRun",
  "description": "BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 88 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is billed per request in USDC over x402 on Base \u2014 no API keys, no accounts, no subscriptions; read the price off the 402 and retry with a signed X-PAYMENT header. 7 open-weight chat models are free and need no wallet.",
  "url": "https://blockrun.ai/api/v1",
  "provider": {
    "organization": "BlockRun, Inc.",
    "url": "https://blockrun.ai"
  },
  "version": "1.0.0",
  "protocolVersion": "0.3.0",
  "documentationUrl": "https://blockrun.ai/llms.txt",
  "capabilities": {
    "streaming": true,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/event-stream"
  ],
  "securitySchemes": {
    "x402": {
      "type": "apiKey",
      "in": "header",
      "name": "X-PAYMENT",
      "description": "x402 payment signature; see the 402 response for requirements."
    }
  },
  "security": [
    {
      "x402": []
    }
  ],
  "skills": [
    {
      "id": "chat",
      "name": "Chat & LLM routing",
      "description": "OpenAI-, Anthropic- and Responses-compatible chat across frontier and open-weight models.",
      "tags": [
        "llm",
        "chat",
        "routing"
      ],
      "examples": []
    },
    {
      "id": "media",
      "name": "Image, video, music, speech",
      "description": "Generation endpoints priced per call.",
      "tags": [
        "image",
        "video",
        "audio",
        "tts"
      ],
      "examples": []
    },
    {
      "id": "search",
      "name": "Web & neural search",
      "description": "Live web/X search and Exa neural search + page extraction.",
      "tags": [
        "search",
        "exa"
      ],
      "examples": []
    },
    {
      "id": "markets",
      "name": "Prediction & crypto markets",
      "description": "Predexon prediction-market data, on-chain and price feeds, DEX swaps.",
      "tags": [
        "polymarket",
        "kalshi",
        "crypto",
        "defi"
      ],
      "examples": []
    },
    {
      "id": "rpc",
      "name": "Multi-chain RPC",
      "description": "JSON-RPC for 40 chains through one paid endpoint.",
      "tags": [
        "rpc",
        "ethereum",
        "solana",
        "base"
      ],
      "examples": []
    },
    {
      "id": "payments",
      "name": "Pay per call in USDC",
      "description": "x402: 402 challenge \u2192 signed exact USDC authorization \u2192 retry. Settles on-chain.",
      "tags": [
        "x402",
        "usdc",
        "payments"
      ],
      "examples": []
    }
  ],
  "links": {
    "llms": "https://blockrun.ai/llms.txt",
    "llmsFull": "https://blockrun.ai/llms-full.txt",
    "openapi": "https://blockrun.ai/openapi.json",
    "x402Manifest": "https://blockrun.ai/.well-known/x402",
    "agentCard": "https://blockrun.ai/.well-known/agent-card.json",
    "discovery": "https://blockrun.ai/discovery",
    "skill": "https://blockrun.ai/skill.md",
    "agentReference": "https://blockrun.ai/agent.md",
    "models": "https://blockrun.ai/api/v1/models",
    "integrations": "https://blockrun.ai/integrations",
    "rails": "https://blockrun.ai/x402",
    "contact": "mailto:hello@blockrun.ai"
  }
}