{"uid":"cap_5yykbkFfN1k2GctbbxBeo","slug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-541893f7","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://email-verify.agentdiet.dev/v1/execute)","url":"https://email-verify.agentdiet.dev/v1/execute?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_4pFjByAttVEDsd_VJwf4Q","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"email-verify.agentdiet.dev","brandSlug":"email-verify-agentdiet-dev-mpp","brandBaseUrl":"https://email-verify.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and routes across 500+ indexed MCP servers and A2A tools using a capability query, returning token-compressed results with prompt-injection firewall protection","exampleAgentPrompt":"Search the MCP and A2A tool index for any servers that handle SEC filings or company enrichment, and return the best matching tools with compressed metadata.","exampleUseCases":[{"title":"Finding an MCP tool for GitHub security","prompt":"Search the MCP tool index for any servers or A2A agents that can run GitHub security audits or repo vulnerability scans — I need to find the right capability to plug into my pipeline."},{"title":"Routing to a web search agent","prompt":"Can you look through the indexed MCP servers and find me a tool that does live web search or news grounding? I want to connect my agent to the right one without scanning hundreds of registries myself."},{"title":"Verifying a specific MCP endpoint","prompt":"I have this MCP endpoint URL — can you check it against the tool index to see if it's listed, what it does, and whether it's safe to proxy through?"}],"resultDescription":"Returns a token-compressed list of matching MCP servers and A2A tools relevant to the capability query, including tool metadata, endpoint URLs, and safety/firewall status — all with approximately 85% token reduction compared to raw registry responses.","failureModes":["Empty query string returns validation error","No matching tools found for obscure or misspelled capability query","External MCP registry unavailable causing incomplete results","Rate limiting or payment required (HTTP 402) if call quota exceeded","Prompt-Guard firewall may block queries containing injection-like patterns"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool handles a specific capability across a large heterogeneous registry, especially when token budget is constrained or when safe-proxying through an injection firewall is required. Prefer over manually querying individual MCP registries or maintaining a static tool list.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:35:17.993Z","isFirstParty":false,"canonicalSlug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-818d5a00"}