{"servers":[{"server":{"$schema":"https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json","name":"io.github.CarbonCashmere/x402-mcp","description":"177 crypto market intel endpoints with auto x402 USDC micropayments from your AI agent","repository":{"url":"https://github.com/CarbonCashmere/x402-mcp","source":"github","id":"1243950484"},"version":"0.2.2","packages":[{"registryType":"npm","registryBaseUrl":"https://registry.npmjs.org","identifier":"@carbon-cashmere/x402-mcp","version":"0.2.2","transport":{"type":"stdio"},"environmentVariables":[{"description":"0x-hex private key for Base/Polygon/Arbitrum USDC payments (dedicated wallet)","format":"string","isSecret":true,"name":"EVM_PRIVATE_KEY"},{"description":"base58 Solana keypair for Solana USDC payments (optional)","format":"string","isSecret":true,"name":"SVM_PRIVATE_KEY"},{"description":"Max tools exposed (1-177, default 100)","format":"number","default":"100","name":"X402_TOOL_LIMIT"}]}]},"_meta":{"io.modelcontextprotocol.registry/official":{"status":"active","statusChangedAt":"2026-05-20T19:03:03.56176Z","publishedAt":"2026-05-20T19:03:03.56176Z","updatedAt":"2026-05-20T19:03:03.56176Z","isLatest":true}}}],"metadata":{"count":1}}