{"uid":"cap_J1NroKpZPwN7-2joDvqJF","slug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-36ffeadf","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/b2a-router)","url":"https://preflight.agentdiet.dev/v1/b2a-router?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_0aJI0YKR5iPKrxfz5tXHF","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 token-compressed results through a prompt-injection firewall","exampleAgentPrompt":"Search your meta-index of 500+ MCP servers and A2A tools for anything that can do 'SEC filings' and return the top matches with compressed descriptions — also run it through the prompt-injection firewall before showing me results.","exampleUseCases":[{"title":"Swarm tool discovery for SEC data","prompt":"I'm building an agent swarm and need to find every MCP server in your index that handles SEC filings or financial document retrieval — search for 'SEC filings' and give me the top results with token-compressed summaries."},{"title":"Verify a suspicious endpoint URL","prompt":"Before I let my agent call this endpoint — https://somerandommcp.example.com/v1/tool — can you check your meta-router to verify whether it's a legitimate, known MCP or A2A tool?"},{"title":"Capability search for GitHub security auditing","prompt":"My agent pipeline needs a tool that can do GitHub security audits — search your 500+ MCP index for 'github security' and tell me which tools match, with safe compressed descriptions."}],"resultDescription":"Returns a list of matching MCP servers or A2A tools for the given capability query, with token-compressed descriptions (up to 85% compression) and prompt-injection-screened metadata; or a verification result when an endpoint URL is supplied as the query.","failureModes":["Empty or too-generic query returns low-relevance or no matches","Unknown or unindexed endpoint URL returns unverified/not-found status","Payment not completed (HTTP 402) blocks result delivery","Prompt-Guard firewall may flag and redact tool descriptions containing injection patterns","Rate limiting if called too frequently without payment"],"whenToPreferThis":"Use this endpoint when you need to dynamically discover, search, or verify MCP servers and A2A tools at runtime within an agent swarm, especially when you want a single connection point that aggregates 500+ sources, applies token compression to reduce LLM costs, and screens results through a prompt-injection firewall before surfacing them to your agent.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:25:39.026Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-f8f7c79e"}