{"uid":"cap_jUn6er0YoSC67qNVz4HM5","slug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-90dab767","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/security-audit-dag)","url":"https://email-verify.agentdiet.dev/v1/security-audit-dag?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_xHFBb8wl9F0GNnSukKeJz","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 queries across 500+ indexed MCP servers and A2A tools with token compression and prompt-injection firewall protection.","exampleAgentPrompt":"Search for available MCP servers or A2A tools that can handle 'context compression' and return the best matches with compressed metadata.","exampleUseCases":[{"title":"Discovering tools for SEC filing analysis","prompt":"Find me any MCP servers or A2A tools in your index that can pull or parse SEC filings — I need to know what's available before I wire up my research agent."},{"title":"Routing agent to GitHub security audit tool","prompt":"Search your tool index for something that can run a GitHub security audit — I want to know which MCP endpoint to point my agent at for code vulnerability scanning."},{"title":"Validating an endpoint URL before use","prompt":"Can you check if this endpoint URL https://some-tool.example.com/api is listed and safe to use in your tool registry? I want to make sure it's not a prompt-injection risk before my agent calls it."}],"resultDescription":"Returns matching MCP server or A2A tool entries from the index of 500+ tools, including metadata about capabilities, with token-compressed output and prompt-injection filtering applied via the Prompt-Guard firewall.","failureModes":["Empty or vague query string returns no matches or low-confidence results","Queried endpoint URL not found in index returns an empty or null result","Prompt-Guard firewall may block or sanitize queries that resemble injection attempts","Payment required (HTTP 402) if x402 micropayment header is missing or insufficient","Malformed query object returns validation error"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability at runtime, especially when token budget is constrained (85% compression) or when safety from prompt injection is a concern. It is particularly useful as a meta-routing layer before delegating to a specialized downstream tool.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:30:27.702Z","isFirstParty":false,"canonicalSlug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-818d5a00"}