{"uid":"cap_r2BIde_a9Yq1218ws-Euk","slug":"defi-yield-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-208e2093","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://defi-yield.agentdiet.dev/api/mcp/audit)","url":"https://defi-yield.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_dSRjOqkeQqwWzoS_YjLjX","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"defi-yield.agentdiet.dev","brandSlug":"defi-yield-agentdiet-dev-mpp","brandBaseUrl":"https://defi-yield.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and indexes 500+ MCP servers and A2A tools to find matching capabilities by query, with built-in prompt-injection firewall and token compression","exampleAgentPrompt":"Search the MCP tool index for any servers or A2A tools that support 'SEC filings' or 'company enrichment' — I want to find what's available and route my agent to the right one.","exampleUseCases":[{"title":"Discovering tools for financial data","prompt":"Search the MCP tool index for any servers that handle SEC filings or financial statement data — I need to find which agent tools are available for that."},{"title":"Verifying a candidate MCP endpoint","prompt":"Can you check if https://some-provider.example.com/api/mcp is a valid, live MCP endpoint and tell me what capabilities it exposes?"},{"title":"Finding prompt-injection-safe tools","prompt":"I need to find MCP tools that handle web content extraction but I'm worried about prompt injection — search the index for tools with built-in firewall or safety features."}],"resultDescription":"Returns a list of matching MCP servers or A2A tools relevant to the query, including their capability descriptions, endpoint URLs, and metadata — with 85% token compression applied and prompt-injection screening. For URL verification queries, returns whether the endpoint is a valid MCP/A2A server and what it exposes.","failureModes":["Missing or empty query parameter returns validation error","Unrecognized or offline endpoint URL returns verification failure","Query too broad returns too many results with low relevance","Rate limiting or payment required (HTTP 402) if usage quota exceeded","Endpoint temporarily unavailable if meta-index is being refreshed"],"whenToPreferThis":"Use this endpoint when an agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability without hardcoding integrations. Prefer this over manual tool registries when you want a single connection point to 500+ tools, need built-in prompt-injection protection, or want token-compressed tool metadata to avoid bloating context windows. Especially useful for swarm orchestrators that need to route sub-agents to appropriate tools at runtime.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:11.361Z","isFirstParty":false,"canonicalSlug":"defi-yield-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-b31cc8b3"}