{"uid":"cap_TTwKgFpyK1t-RXef3-Kkc","slug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-bb51802d","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/api/mcp/audit)","url":"https://email-verify.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_mbgN0sp6WuQv-8QJjc2t-","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 indexes 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered discovery results for agent routing.","exampleAgentPrompt":"Search the MCP tool index for any servers that support 'SEC filings' or 'company enrichment' — I want to find available agents I can route those tasks to.","exampleUseCases":[{"title":"Discovering tools for GitHub security audits","prompt":"Search the A2A and MCP tool directory for anything that handles GitHub security auditing or code scanning — I need to find what's available before I set up my agent pipeline."},{"title":"Verifying a specific MCP endpoint is live","prompt":"Can you check whether this endpoint URL is indexed and verified in the MCP registry: https://email-verify.agentdiet.dev/api/mcp/audit — I want to confirm it's actually reachable and trusted."},{"title":"Finding context-compression capable agents","prompt":"Look up MCP servers that specialize in context compression or token reduction — I'm building a swarm and need to find tools that can shrink my prompts by at least 80%."}],"resultDescription":"Returns a compressed, structured listing of matching MCP servers and A2A tools relevant to the capability query, including metadata about each tool, firewall-cleared routing info, and optionally endpoint verification status. Results are token-compressed at ~85% to minimize agent context usage.","failureModes":["Empty query string returns validation error (minLength:1 violated)","Query too vague returns low-confidence or empty match set","Endpoint URL verification may fail if target is offline","Rate limiting or payment failure (x402) blocks response","Upstream MCP server index may have stale entries for niche capabilities"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability before routing a task, especially in multi-agent swarm architectures. It is particularly valuable when context window efficiency matters (85% compression) and when prompt injection safety is a concern (Prompt-Guard firewall). Prefer this over static tool registries when you need live, indexed coverage of 500+ servers in a single connection.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:22:58.762Z","isFirstParty":false,"canonicalSlug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-818d5a00"}