{"uid":"cap_jsvOishClfcsh-sMP5aCn","slug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-0e0ce374","name":"Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router","description":"Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall. (Live x402 v2, IETF MPP & MCP endpoint at https://preflight.agentdiet.dev/api/mcp/audit)","url":"https://preflight.agentdiet.dev/api/mcp/audit?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"query":{"type":"string","minLength":1,"description":"Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":[],"displayCostAmount":"0.01","displayCostAsset":"USD","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":"$0.01/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_R7CCRiWa2ASlrrUthW-U9","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"preflight.agentdiet.dev","brandSlug":"preflight-agentdiet-dev-mpp","brandBaseUrl":"https://preflight.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches an index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-screened tool metadata for agent routing and swarm orchestration.","exampleAgentPrompt":"Search the MCP tool index for servers that can handle 'company enrichment' — I need to find and safely route to one with prompt-injection protection enabled.","exampleUseCases":[{"title":"Discover tools for SEC filings","prompt":"Can you search the MCP tool registry for anything that covers SEC filings or 10-K financial data, so I can wire it into my research agent?"},{"title":"Verify a third-party MCP endpoint","prompt":"I found an MCP endpoint at https://some-tool.example.com/mcp — can you check the tool index to see if it's catalogued and whether it passes the prompt-injection firewall?"},{"title":"Find compression tools for token budget","prompt":"My agent is hitting token limits — search the indexed MCP servers for tools that do context compression or token budget management so I can plug one in."}],"resultDescription":"A structured response listing matching MCP servers or A2A tools from the 500+ tool index, with compressed descriptions (up to 85% token reduction), Prompt-Guard firewall screening results, routing metadata, and any relevant capability scores or endpoint verification details.","failureModes":["Empty or vague query returns no useful matches","Queried endpoint URL not found in index returns a null or unverified result","Prompt-Guard firewall flags the query itself as suspicious","Rate limit or payment failure (HTTP 402) when x402 credits are exhausted","Index lag means newly added MCP servers may not appear immediately"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover, evaluate, or route to MCP servers or A2A tools at runtime without maintaining its own tool registry — especially when token budget is a concern (85% compression) or when untrusted tool payloads need firewall screening before use.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:51.422Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-f8f7c79e"}