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OpenAPI Specification

openapi: 3.2.0
info:
  title: BridgeNode Models API
  version: 1.8.1
  contact:
    name: BridgeNode
    url: https://bridgenode.cc
  description: 'BridgeNode — x402 pay-per-request AI inference for agents. OpenAI-compatible API + MCP server with tool calling, Solana USDC, gas-free micropayments. No API keys. Free models included. Live prices: bridgenode.cc/v1/models'
  x-guidance: 'BridgeNode is an AI inference bridge: no API keys, pay per request with Solana USDC via x402. POST /v1/chat/completions with {"model": <model>, "messages": [{"role": "user", "content": "..."}]} — the unpaid request returns 402 with exact price (USDC atomic units), payTo (Solana wallet) and memo; sign the Solana USDC transfer and retry with the PAYMENT-SIGNATURE header. GET /v1/models lists models and prices (free). Available models: gpt-oss-20b, gpt-oss-120b, glm-4.7-flash, glm-4.5-flash, glm-4.6v-flash, deepseek-flash, glm-4.7-flashx, glm-5.2, glm-5.1, glm-5, glm-5-turbo, glm-4.7, glm-4.6, glm-4.5, glm-4.5-x, glm-4.5-air, glm-4.5-airx, glm-4-32b-0414-128k, glm-5v-turbo, glm-4.6v, glm-4.6v-flashx, glm-4.5v, kimi-k2.7-code, kimi-k2.7-code-highspeed, kimi-k2.6, MiniMax-M2.7, MiniMax-M2.7-highspeed, MiniMax-M2.5, MiniMax-M2.5-highspeed, MiniMax-M2.1, MiniMax-M2.1-highspeed, MiniMax-M2, deepseek-v4-pro, kimi-k3, glm-5.3, minimax-m3. Prices: from $0.0020 per request.'
servers:
- url: https://bridgenode.cc
tags:
- name: Models
paths:
  /v1/models:
    get:
      summary: List available models and their pricing
      operationId: models_list_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
      description: List the models BridgeNode serves with their per-token prices (public endpoint, no payment required).
      security: []
      tags:
      - Models
    head:
      summary: List available models and their pricing
      operationId: models_list_head
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
      description: List the models BridgeNode serves with their per-token prices (public endpoint, no payment required).
      security: []
      tags:
      - Models
components:
  securitySchemes:
    x402:
      type: apiKey
      in: header
      name: PAYMENT-SIGNATURE
x-discovery:
  ownershipProofs:
  - 57VRDHQswwt8WdmRHa2SDQTPai8LVan8bLbao7H3ZUNcrEsA8w6wyWcVTCNAcaR1iCSxhYmBYC1Wu2tRML9i88WC