{"uid":"cap_mVAI6BXFikOBeK08lhPfc","slug":"mcp-security-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-a8e41399","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://mcp-security.agentdiet.dev/v1/a2a-router)","url":"https://mcp-security.agentdiet.dev/v1/a2a-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_bIcZJ9D-8jL8gPDfKDxRS","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"mcp-security.agentdiet.dev","brandSlug":"mcp-security-agentdiet-dev-mpp","brandBaseUrl":"https://mcp-security.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and discovers capabilities across 500+ indexed MCP servers and A2A tools, returning token-compressed results via a single meta-router endpoint with built-in Prompt-Guard firewall","exampleAgentPrompt":"Search the MCP meta-router for tools that handle 'company enrichment' — I need to find which indexed A2A servers support B2B lead data so I can wire one into my agent pipeline.","exampleUseCases":[{"title":"Discover tools for SEC filing analysis","prompt":"Search the MCP tool index for anything that handles SEC filings or public company 10-K data — I want to route my agent to the right capability without hunting through individual servers."},{"title":"Find a safe proxy for untrusted agent responses","prompt":"I need to find an MCP server that can screen A2A payloads for prompt injection before my agent processes them — search the index for 'prompt guard' or 'jailbreak firewall' tools."},{"title":"Identify context compression capabilities","prompt":"Which of the 500+ indexed MCP servers support context compression? Search for 'token compression' and tell me what tools are available so I can reduce token overhead in my swarm."}],"resultDescription":"Returns a token-compressed list of matching MCP servers and A2A tool endpoints relevant to the query, including capability descriptions, endpoint URLs, and any Prompt-Guard security flags — compressed to roughly 85% fewer tokens than raw tool manifests.","failureModes":["Empty query string returns validation error (query is required, minLength 1)","No matching tools found for obscure or misspelled capability queries","x402 payment failure if USDC balance insufficient ($0.01 per call)","Rate limiting if swarm makes too many concurrent discovery calls","Stale index results if a referenced MCP server has gone offline since indexing"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hardcoding tool endpoints. Especially valuable in multi-agent swarms where routing decisions must be made at runtime, or when you want a single connection point that also applies Prompt-Guard firewall filtering to discovered tools before forwarding.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:50.532Z","isFirstParty":false,"canonicalSlug":"mcp-security-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-88de6323"}