{"uid":"cap_mYnVhTwHkPKzwoLS9ymQT","slug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-cf5904ef","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/x402-gateway)","url":"https://email-verify.agentdiet.dev/v1/x402-gateway?utm_source=zero.xyz","method":"POST","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_lxVNQR_AwCKSq3-qwx1QH","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":"Meta-router that discovers, proxies, and routes queries across 500+ MCP servers and A2A tools with token compression and prompt firewall protection","exampleAgentPrompt":"Search the MCP and A2A tool index for any available tools that handle GitHub security audits — I want to route my query through the meta-router and get back the best matching endpoints with compressed responses.","exampleUseCases":[{"title":"Discover SEC filing tools for agent","prompt":"Find me all available MCP servers or A2A tools in the index that can pull SEC filings — I need to route a query for 'SEC filings' and see what comes back."},{"title":"Route context compression capability search","prompt":"Search the tool discovery router for any MCP endpoints that support context compression — I want to know which servers index that capability."},{"title":"Find B2B lead enrichment endpoints","prompt":"I need to find tools that can do B2B lead enrichment — can you query the universal tool router with 'company enrichment' and return the best matching A2A or MCP endpoints?"}],"resultDescription":"Returns matching MCP servers and A2A tool endpoints relevant to the search query, with compressed metadata and routing details. Responses are token-compressed by up to 85% and filtered through a Prompt-Guard firewall before delivery.","failureModes":["Empty or too-short query returns validation error","No matching tools found for niche capability query","Payment required (HTTP 402) if x402 micropayment not attached","Prompt-Guard firewall blocks queries flagged as adversarial","Timeout if upstream MCP servers are unresponsive","Idempotency key collision if UUIDv4 not unique"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability rather than hardcoding tool references. Ideal for swarm orchestration, meta-agent routing, and dynamic tool selection at runtime. Prefer over manual MCP server lists when the required capability is unknown ahead of time or when token efficiency (85% compression) and prompt injection protection are priorities.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-11-02T00:37:02.667Z","isFirstParty":false,"canonicalSlug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-818d5a00"}