{"uid":"cap_IuI6xWFKlX5lxxjZvcgi3","slug":"forest-gas-station-mcp-preflight-handshake-ac2b7ec7","name":"Forest Gas Station MCP Preflight Handshake","description":"Read-only MCP handshake/tools-list preflight; no destructive tool calls. Base mainnet USDC","url":"https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/mcp/preflight?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","description":"Public HTTP(S) URL to inspect, resolve, or compare."},"protocol_version":{"type":"string","maxLength":32,"description":"Public protocol version value used to scope this lookup."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_USSnanpJVl-ml93OK_4O4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a read-only MCP handshake and tools-list preflight check against a target MCP server URL, returning protocol compatibility and available tools without executing any destructive calls.","exampleAgentPrompt":"Can you do a preflight handshake check on https://my-mcp-server.example.com/mcp using MCP protocol version 2024-11-05 and tell me what tools it advertises?","exampleUseCases":[{"title":"Verify MCP server before integration","prompt":"Before I wire up that new MCP server at https://tools.mycompany.com/mcp, can you do a read-only preflight check with protocol version 2024-11-05 to confirm it responds correctly and show me what tools it lists?"},{"title":"Audit third-party MCP endpoint tools","prompt":"I want to know what tools are exposed on the public MCP server at https://partner-api.acme.com/mcp — can you run the MCP handshake preflight against it so I can see the full tools list without triggering anything?"},{"title":"Debug MCP protocol version mismatch","prompt":"My agent keeps failing to connect to https://internal.dev/mcp — can you run a preflight handshake check using protocol version 2024-11-05 and tell me whether the server responds and what it says about compatibility?"}],"resultDescription":"Returns the outcome of the MCP handshake including whether the server acknowledged the connection, the list of tools advertised by the server, protocol version negotiation details, and any errors encountered — all without invoking any destructive tool calls.","failureModes":["Target URL is unreachable or returns non-200 status — handshake fails with connection error","Target URL is not an MCP server — returns unexpected response format","Protocol version mismatch — server may reject or respond with incompatible version info","Invalid URL format in input — request rejected with validation error","Server returns empty tools list — may indicate misconfiguration or restricted access"],"whenToPreferThis":"Use this endpoint when you need to safely probe whether a given URL hosts a valid MCP server and discover its advertised tools without triggering any side effects. Prefer this over direct MCP connection attempts when you want a read-only, non-destructive capability discovery step before committing to integration.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:39:46.280Z","isFirstParty":false,"canonicalSlug":"forest-gas-station-mcp-preflight-handshake-ac2b7ec7"}