{"server":{"$schema":"https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json","name":"io.github.memosr/base-gas-mcp","description":"Live Base gas, tx cost in USD, 4-chain comparison and gas history. Paid per call in USDC via x402.","repository":{"url":"https://github.com/memosr/base-gas-mcp","source":"github"},"version":"0.3.2","websiteUrl":"https://base-gas-x402.vercel.app","packages":[{"registryType":"npm","identifier":"base-gas-mcp","version":"0.3.2","transport":{"type":"stdio"},"environmentVariables":[{"description":"Private key of a Base mainnet wallet holding a little USDC. Pays $0.002 to $0.02 per call. Use a separate wallet with small funds.","isRequired":true,"format":"string","isSecret":true,"name":"BUYER_PRIVATE_KEY"},{"description":"Refuse any single payment above this many USD. Default 0.05.","format":"string","name":"MAX_USD_PER_CALL"}]}]},"_meta":{"io.modelcontextprotocol.registry/official":{"status":"active","statusChangedAt":"2026-10-18T19:55:25.95447Z","publishedAt":"2026-10-18T19:55:25.95447Z","updatedAt":"2026-10-18T19:55:25.95447Z","isLatest":true}}}