BridgeNode
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AI inference via x402. Pay with Solana USDC. No registration. No API keys.
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- Developer Tools, AI, Other
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AI inference bridge for AI agents. No API keys, no registration, no subscriptions. Pay per request with Solana USDC via x402 (HTTP 402). Transaction fees are sponsored — the agent only needs USDC.
- OpenAI-compatible API:https://bridgenode.cc/v1
- Models & prices (JSON):https://bridgenode.cc/v1/models
- MCP server (streamable-http):https://bridgenode.cc/mcp
- Agent install map:https://bridgenode.cc/llms.txt
- Skill file:https://bridgenode.cc/skill.md
Prices are in USDC per token (6 decimals). Live prices:GET https://bridgenode.cc/v1/models.
Pricing model:exact scheme— the agent pays forinput tokens + max_tokensbeforeprocessing. Minimum charge per request: 2000 atomic units = $0.002 USDC.
- Send the request without payment headers.
- Server responds402 Payment Requiredwith aPAYMENT-REQUIREDheader (base64 JSON): price,payToaddress, USDC mint, memo, recent blockhash.
- Agent constructs apartial transaction: USDCTransferChecked(amount = required) + Memo instruction, signs with its own wallet. Fee payer is NOT signed by the agent.
- Agent retries the request withPAYMENT-SIGNATUREheader (base64 JSON payload with the signed transaction).
- Server verifies the payment and processes the request (fees sponsored — gasless for the agent).
- Response is200withPAYMENT-RESPONSEheader (settlement receipt).
- Network:solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp(Solana mainnet)
- Asset: USDCEPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
- The agent must have an existing USDC ATA; it doesnotneed SOL (BridgeNode sponsors fees).
- Use official x402 SDKs (@x402/svm,x402[svm]) or any x402-capable client — they handle 402 → sign → retry automatically.
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}'
Response:402withPAYMENT-REQUIREDheader. Sign the partial transaction with an x402-capable client and retry withPAYMENT-SIGNATUREheader. Response:200with the completion.
- Python SDK:pip install bridgenode-llm(https://pypi.org/project/bridgenode-llm)
- Python full toolkit (SDK + CLI):pip install bridgenode(https://pypi.org/project/bridgenode)
- CLI:pip install bridgenode-cli(https://pypi.org/project/bridgenode-cli)
- Alias packages (same toolkit):bridgenode-sdk,bridgenode-mcp,bridgenode-skill(https://pypi.org/project/bridgenode-sdk)
- TypeScript:npm i @bridgenode/llm(https://www.npmjs.com/package/@bridgenode/llm)
- MCP wrapper:npm i @bridgenode/mcp(https://www.npmjs.com/package/@bridgenode/mcp)
All SDKs handle the x402 payment handshake automatically, with fail-closed spending limits (BRIDGENODE_MAX_PER_CALL,BRIDGENODE_DAILY_CAP).
- One-line install:claude mcp add bridgenode -s user -- npx -y @bridgenode/mcp@latest
- Server URL:https://bridgenode.cc/mcp(streamable-http)
- Tool:chat_completions(model, mode, messages, max_tokens)
- Payment: x402 handshake per tool call; always check the actual amount in the 402 response before signing.
- Agent card:https://bridgenode.cc/.well-known/agent-card.json
- MCP manifest:https://bridgenode.cc/.well-known/mcp.json
- AI manifest:https://bridgenode.cc/.well-known/ai-manifest.json
- API catalog:https://bridgenode.cc/.well-known/api-catalog
- Listed on x402-list:https://x402-list.com/services/bridgenode
- Listed on x402-dev:https://www.x402dev.com/awesome-projects/
- Listed on nohumans.directory:https://nohumans.directory/l/f1f74751-9d5
- Listed on gold-402:https://github.com/Haustorium12/gold-402/blob/main/directory/learning.md
- ClawHub skill:https://clawhub.ai/bridgenode/skills/bridgenode
- Refunds: if the provider fails before any content is delivered, the payment is refunded automatically (reverse USDC transfer).
- Reasoning models: usemax_tokens >= 200— a too-small limit can produce an EMPTY answer; empty answers are NOT refunded (service provided).
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