{"uid":"cap_5sdCZYdSEKavUL_DkjrAb","slug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-6c27036b","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/v1/crypto-alpha-dag)","url":"https://preflight.agentdiet.dev/v1/crypto-alpha-dag?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_yaP8S0_C5Rsm8QgykAwo9","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 a meta-index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered results for agent tool discovery and routing.","exampleAgentPrompt":"Search the MCP tool index for any servers or A2A agents that handle 'SEC filings' and give me the best matches with compressed descriptions I can use to route my next agent call.","exampleUseCases":[{"title":"Agent swarm tool discovery","prompt":"I'm building a multi-agent pipeline and need to find MCP servers that handle GitHub security audits — can you search the tool index and tell me which ones are available and what they do?"},{"title":"Safe proxy validation for unknown endpoint","prompt":"Before my agent calls this endpoint — https://some-mcp-server.example.com/v1/query — can you run it through the prompt-guard firewall and meta-router to check if it's safe and legitimate?"},{"title":"Capability search for data enrichment tools","prompt":"Search the A2A and MCP tool index for anything that does B2B company enrichment or lead data extraction, and return the top matches with compressed descriptions so my agent can pick the right one."}],"resultDescription":"Returns a compressed, firewall-filtered list of matching MCP servers and A2A tools relevant to the capability query, including tool names, endpoint metadata, and capability summaries at up to 85% token reduction. If an endpoint URL is submitted, returns a safety validation result from the Prompt-Guard firewall.","failureModes":["Empty or too-broad query returning no meaningful matches","Query string missing (required parameter) returns 400 error","Unknown or malformed endpoint URL fails validation check","Rate limiting or 402 payment required if micropayment not settled","Prompt-Guard firewall may flag benign queries as suspicious","Index may not include newly registered MCP servers not yet crawled"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool is best suited for a capability at runtime, rather than hardcoding tool references. Ideal for swarm architectures, meta-orchestrators, or any agent that needs to route to the right tool from a large pool without blowing the context window. The built-in Prompt-Guard firewall makes it preferable over manual tool registries when calling untrusted external endpoints.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:32.735Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-f8f7c79e"}