x402 Engine

https://server.smithery.ai/x402engine/x402engine-mcp/mcp

● healthy

28 pay-per-call APIs for AI agents via HTTP 402 crypto micropayments. Image generation, LLM inference, code execution, audio transcription, crypto market data, blockchain analytics, ENS resolution, IPFS storage, and travel search. Pays with USDC on Base/Solana or USDm on MegaETH.

Transport

streamable-http

Auth

smithery_api_key

Cost

—

Protocol revision

2026-07-28

negotiated, not declared

Listed in

Directories this entry was found in.

smithery ↗

How to connect

MCP endpoint (streamable-http)

https://server.smithery.ai/x402engine/x402engine-mcp/mcp

JSON-RPC initialize probe

curl -X POST https://server.smithery.ai/x402engine/x402engine-mcp/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'

Homepage

https://x402engine.app

Listed at (smithery)

https://x402engine.app