{"uid":"cap_bOIwP99KR6nu_bP48Fg1w","slug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-63fb927e","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/universal-mcp-gateway)","url":"https://email-verify.agentdiet.dev/v1/universal-mcp-gateway?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_vKsnEEVAw6UcJ6oLX0Bfr","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 to 500+ MCP servers and A2A tools via a single connection, with token compression and prompt injection firewall","exampleAgentPrompt":"Search the MCP gateway index for tools that handle 'github security auditing' — I want to discover which MCP servers and A2A tools are available and get back compressed, firewall-screened results.","exampleUseCases":[{"title":"Discover tools for SEC filing retrieval","prompt":"Search the universal MCP gateway for available tools that can pull SEC filings — I need to find which MCP servers or A2A agents index that capability."},{"title":"Route agent to context compression tool","prompt":"Use the MCP meta-router to find me a tool for context compression — I want to know which MCP servers support it so my agent can connect through the single-gateway proxy."},{"title":"Verify and vet an unknown MCP endpoint URL","prompt":"I have this endpoint URL I found online — can you run it through the universal MCP gateway to verify it and check if it's indexed and safe to use?"}],"resultDescription":"Returns a filtered, token-compressed list of matching MCP servers or A2A tools relevant to the capability query, along with routing metadata and prompt-injection-screened results from the 500+ indexed endpoints.","failureModes":["Missing or empty query parameter returns validation error","Query matches no indexed tools, returning empty results","Upstream MCP server unreachable, resulting in partial results","Prompt-Guard firewall blocks query flagged as injection attempt","Payment not processed (x402), resulting in 402 response before results are returned"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP servers or A2A tools support a given capability without maintaining its own index, or when a safe proxy with token compression and prompt injection protection is needed. Ideal for swarm orchestration where the agent doesn't know ahead of time which tool to call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:51.423Z","isFirstParty":false,"canonicalSlug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-818d5a00"}