{"protocolVersion":"0.3.0","name":"SiteCheck Crypto & Finance tool finder","description":"Finds the right one of the 174 pay-per-call SiteCheck Crypto & Finance tools on this host for a task described in plain words, and says how to call it: URL, method, price in USDC and how to pay with x402. Free; it runs no tool itself. The tools are called over HTTP (x402) or MCP at https://api.chainmarket-api.workers.dev/mcp.","url":"https://api.chainmarket-api.workers.dev/a2a","preferredTransport":"JSONRPC","version":"1.0.0","provider":{"organization":"SiteCheck","url":"https://api.sitecheck-api.workers.dev/"},"documentationUrl":"https://api.chainmarket-api.workers.dev/llms.txt","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"defaultInputModes":["text/plain"],"defaultOutputModes":["text/plain","application/json"],"skills":[{"id":"find-tool","name":"Find a tool","description":"Describe what you need (for example \"validate an IBAN\" or \"latest SEC filings for a company\"); the answer lists the matching SiteCheck Crypto & Finance tools with URL, method, price and the x402 payment steps.","tags":["x402","tools","discovery","pay-per-call","mcp"],"examples":["validate an IBAN","check a company in the UK register","bitcoin mempool fees"],"inputModes":["text/plain"],"outputModes":["text/plain","application/json"]}]}