CheapestInference

{
  "url": "https://api.cheapestinference.com",
  "name": "CheapestInference",
  "skills": [
    {
      "id": "discover-plans",
      "auth": "none",
      "name": "Discover Plans & Pricing",
      "method": "GET",
      "endpoint": "https://api.cheapestinference.com/api/agent/plans",
      "inputModes": [
        "application/json"
      ],
      "description": "Returns all subscription plans and credit options with exact USDC prices, the payment address, and the endpoint+body to call after payment. This is the first step for any agent wanting to use this service.",
      "outputModes": [
        "application/json"
      ],
      "exampleResponse": {
        "name": "Standard",
        "slug": "standard",
        "payTo": "<USDC_ADDRESS>",
        "network": "base",
        "currency": "USDC",
        "duration": "30 days",
        "priceUsdc": 30,
        "subscribe": {
          "body": {
            "txHash": "<YOUR_TX_HASH>",
            "planSlug": "standard"
          },
          "method": "POST",
          "endpoint": "https://api.cheapestinference.com/api/agent/subscribe"
        }
      }
    },
    {
      "id": "subscribe",
      "auth": "none",
      "name": "Subscribe with USDC",
      "method": "POST",
      "endpoint": "https://api.cheapestinference.com/api/agent/subscribe",
      "inputModes": [
        "application/json"
      ],
      "description": "After sending the exact plan price in USDC to the payTo address (from discover-plans), POST the transaction hash here to activate a 30-day subscription and receive an API key.",
      "inputSchema": {
        "txHash": "string (Base L2 transaction hash of USDC transfer)",
        "planSlug": "string (lite | standard | pro)"
      },
      "outputModes": [
        "application/json"
      ],
      "exampleResponse": {
        "plan": "standard",
        "apiKey": "sk-...",
        "expiresAt": "2026-03-09T00:00:00Z"
      }
    },
    {
      "id": "topup-credits",
      "auth": "none",
      "name": "Buy Credits with USDC",
      "method": "POST",
      "endpoint": "https://api.cheapestinference.com/api/agent/topup",
      "inputModes": [
        "application/json"
      ],
      "description": "Send at least $10 USDC to the payTo address (from discover-plans), then POST the tx hash and amount here. Returns an API key with pay-as-you-go credits. No subscription needed.",
      "inputSchema": {
        "amount": "number (USD amount, minimum 10)",
        "txHash": "string (Base L2 transaction hash of USDC transfer)"
      },
      "outputModes": [
        "application/json"
      ],
      "exampleResponse": {
        "apiKey": "sk-...",
        "credits": 10,
        "currency": "USD"
      }
    },
    {
      "id": "inference",
      "auth": "bearer",
      "name": "AI Inference (OpenAI-compatible)",
      "endpoints": {
        "models": "https://api.cheapestinference.com/v1/models",
        "openai": "https://api.cheapestinference.com/v1/chat/completions",
        "anthropic": "https://api.cheapestinference.com/anthropic/v1/messages"
      },
      "inputModes": [
        "application/json"
      ],
      "description": "Once you have an API key, use it as Bearer token to call OpenAI-compatible or Anthropic-compatible endpoints for inference.",
      "outputModes": [
        "application/json",
        "text/event-stream"
      ]
    }
  ],
  "erc8004": {
    "agentId": 14354,
    "chainId": 8453,
    "registry": "0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
  },
  "payment": {
    "asset": "USDC",
    "payTo": "0xf9bF4a59308C3b3026F411AA9Ab4F12b6c21159f",
    "chainId": 8453,
    "network": "base",
    "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "minCredits": 10
  },
  "version": "2.0.0",
  "protocol": "a2a",
  "provider": {
    "url": "https://cheapestinference.com",
    "organization": "CheapestInference"
  },
  "agentFlow": [
    "1. GET /api/agent/plans → discover pricing, payment address, and endpoints",
    "2. Send USDC on Base L2 to the payTo address returned in step 1",
    "3. POST /api/agent/subscribe (for subscription) or /api/agent/topup (for credits) with the txHash",
    "4. Receive API key in response",
    "5. Use API key as Bearer token for /v1/chat/completions or /anthropic/v1/messages"
  ],
  "description": "AI inference agent on Base L2. Sells access to open-source LLMs (DeepSeek, Llama, Qwen, Mistral). Agents can autonomously discover plans, pay with USDC, and receive an API key — no human needed.",
  "capabilities": {
    "streaming": true,
    "pushNotifications": false
  },
  "authentication": {
    "schemes": [
      "bearer"
    ],
    "credentials": null
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "supportsAuthenticatedExtendedCard": false
}