{"id":"coinrailz-x402-agent","name":"Coin Railz","description":"Multi-chain x402 micropayment infrastructure for AI agents. 67+ pay-per-call API services across crypto analytics, trading signals, security audits, satellite data, prediction markets, and more.","version":"3.1.0","protocolVersion":"0.3.0","skillCount":67,"documentationUrl":"https://coinrailz.com/.well-known/agent-instructions.json","agentCard":"https://coinrailz.com/.well-known/agent-card.json","paymentProtocol":"x402","supportedChains":["ethereum","base","polygon","arbitrum","solana"],"priceRange":"$0.10 – $10.00 USDC per request","interactionEndpoint":"https://coinrailz.com/a2a/v1/message/send","usage":"POST /a2a/v1/message/send with { \"message\": { \"parts\": [{ \"text\": \"your request\" }] } }"}