BridgeNode

AI inference bridge built exclusively for AI agents — no API keys, pay with Solana USDC via x402.

Quickstart

Three steps, no API key, no registration. Any x402-capable client or the official SDKs handle the handshake automatically.

1. Send a request to POST https://bridgenode.cc/v1/chat/completions — response is 402 Payment Required with a PAYMENT-REQUIRED header (price, payTo, memo, blockhash).
2. Sign a partial USDC TransferChecked + Memo transaction with your wallet. Fee payer is sponsored — the agent only needs USDC.
3. Retry with the PAYMENT-SIGNATURE header — response is 200 with a PAYMENT-RESPONSE settlement receipt.

curl https://bridgenode.cc/v1/chat/completions   -H "Content-Type: application/json"   -d '{"model":"deepseek-v4-flash","messages":[{"role":"user","content":"hello"}],"max_tokens":100}'
# → 402 Payment Required + PAYMENT-REQUIRED header
# sign the partial transaction, then retry with PAYMENT-SIGNATURE header
# → 200 OK + PAYMENT-RESPONSE header

Live prices: /v1/models. Full flow and SDK examples: /llms-full.txt, /skill.md.

MCP setup

Add BridgeNode to any MCP client — one line (stdio wrapper, @bridgenode/mcp):

claude mcp add bridgenode -s user -- npx -y @bridgenode/mcp@latest

Or use the remote server directly (streamable-http) in claude_desktop_config.json / .cursor/mcp.json / .windsurf/mcp.json:

{
  "mcpServers": {
    "bridgenode": {
      "type": "http",
      "url": "https://bridgenode.cc/mcp"
    }
  }
}

Tools: chat_completions (paid, x402), list_models and get_price_estimate (free).

Endpoints

• POST https://bridgenode.cc/v1/chat/completions — chat (x402 paid)
• GET https://bridgenode.cc/v1/models — models + prices (public)
• https://bridgenode.cc/mcp — MCP server (x402 paid tools)

Free models

No payment, no API key, no registration — just send a request with the model id (first request → 200 directly).

gpt-oss-20b, gpt-oss-120b, glm-4.7-flash, glm-4.5-flash, glm-4.6v-flash

Models

• gpt-oss-20b 🆓 — $0.00/1M in, $0.00/1M out
• gpt-oss-120b 🆓 — $0.00/1M in, $0.00/1M out
• glm-4.7-flash 🆓 — $0.00/1M in, $0.00/1M out
• glm-4.5-flash 🆓 — $0.00/1M in, $0.00/1M out
• glm-4.6v-flash 🆓 — $0.00/1M in, $0.00/1M out
• deepseek-v4-flash — $0.26/1M in, $0.77/1M out
• glm-4.7-flashx — $0.08/1M in, $0.47/1M out
• glm-5.2 — $1.64/1M in, $5.15/1M out
• glm-5.1 — $1.64/1M in, $5.15/1M out
• glm-5 — $1.17/1M in, $3.74/1M out
• glm-5-turbo — $1.40/1M in, $4.68/1M out
• glm-4.7 — $0.70/1M in, $2.57/1M out
• glm-4.6 — $0.70/1M in, $2.57/1M out
• glm-4.5 — $0.70/1M in, $2.57/1M out
• glm-4.5-x — $2.57/1M in, $10.41/1M out
• glm-4.5-air — $0.23/1M in, $1.29/1M out
• glm-4.5-airx — $1.29/1M in, $5.27/1M out
• glm-4-32b-0414-128k — $0.12/1M in, $0.12/1M out
• glm-5v-turbo — $1.40/1M in, $4.68/1M out
• glm-4.6v — $0.35/1M in, $1.05/1M out
• glm-4.6v-flashx — $0.05/1M in, $0.47/1M out
• glm-4.5v — $0.70/1M in, $2.11/1M out
• glm-ocr — $0.04/1M in, $0.04/1M out
• kimi-k2.7-code — $1.11/1M in, $4.68/1M out
• kimi-k2.7-code-highspeed — $2.22/1M in, $9.36/1M out
• kimi-k2.6 — $1.11/1M in, $4.68/1M out
• kimi-k2.5 — $0.70/1M in, $3.51/1M out
• MiniMax-M2.7 — $0.35/1M in, $1.40/1M out
• MiniMax-M2.7-highspeed — $0.70/1M in, $2.81/1M out
• MiniMax-M2.5 — $0.35/1M in, $1.40/1M out
• MiniMax-M2.5-highspeed — $0.70/1M in, $2.81/1M out
• MiniMax-M2.1 — $0.35/1M in, $1.40/1M out
• MiniMax-M2.1-highspeed — $0.70/1M in, $2.81/1M out
• MiniMax-M2 — $0.35/1M in, $1.40/1M out
• deepseek-v4-pro — $0.77/1M in, $2.32/1M out
• kimi-k3 — $3.51/1M in, $17.55/1M out
• glm-5.3 — $1.64/1M in, $5.15/1M out
• minimax-m3 — $0.35/1M in, $1.40/1M out

Full pricing: /models

FAQ

• What is BridgeNode? — AI inference bridge for AI agents: OpenAI-compatible chat completions paid per request with Solana USDC via x402. No API keys, no registration, no subscriptions.
• How do agents pay? — The first request returns HTTP 402 with the exact price; the agent signs a partial USDC TransferChecked transaction and retries with the PAYMENT-SIGNATURE header. Transaction fees are sponsored — the agent only needs USDC.
• Does the agent need SOL? — No. BridgeNode sponsors transaction fees (gasless); the agent only needs USDC in its own Solana wallet.
• Which models are available? — 38 models — 5 free ($0, no payment) + pay-per-request. Live prices: https://bridgenode.cc/v1/models.
• Are there refunds? — If the provider fails before any content is delivered, the payment is refunded automatically (reverse USDC transfer).

Discovery

• /llms.txt
• /llms-full.txt
• /agents.md
• /.well-known/agent-card.json
• /.well-known/mcp.json
• /.well-known/ai-manifest.json
• /.well-known/agent-registration.json
• /.well-known/glama.json
• /.well-known/api-catalog
• /.well-known/x402
• /skill.md
• /sitemap.xml
• /robots.txt
• /discovery/resources
• /openapi.json
• Smithery
• Skill: ClawHub — install: npx skills add bridgenode-ai/bridgenode-skill

SDKs

• Python SDK — pip install bridgenode-llm
• Python full toolkit — pip install bridgenode
• CLI — pip install bridgenode-cli
• SDK alias — pip install bridgenode-sdk
• MCP server — pip install bridgenode-mcp
• Skill package — pip install bridgenode-skill
• TypeScript — npm i @bridgenode/llm
• MCP wrapper — npm i @bridgenode/mcp
• Examples — curl, Python, TypeScript, MCP

Community

GitHub Moltbook Discord X

Pricing · Terms