{"uid":"cap_vOpLGWY4EMr5ZlAoCu6k-","slug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-75dcaadc","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/web-rag-shield-dag)","url":"https://email-verify.agentdiet.dev/v1/web-rag-shield-dag?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_V6tA99lnXN0xr4qJB5nWp","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 a meta-index of 500+ MCP servers and A2A tools by capability query, returning matching endpoints with token-compressed results and prompt-injection firewall protection.","exampleAgentPrompt":"Search the MCP and A2A tool index for capabilities related to 'context compression' — I want to find available servers or tools that handle token reduction for agent workflows.","exampleUseCases":[{"title":"Discovering SEC filings tools for a research agent","prompt":"Search the agent tool index for anything related to 'SEC filings' or 'EDGAR' — I need to find MCP servers my research agent can call to pull 10-K and 10-Q data."},{"title":"Finding a prompt firewall for a multi-agent swarm","prompt":"Look up what tools or MCP servers are available for prompt injection protection or a 'prompt guard firewall' — I'm building a swarm and need to add safety guardrails."},{"title":"Routing agent calls through a single meta-connection","prompt":"I want to connect my agent to a single endpoint that can route calls to 500+ different MCP servers — search for 'company enrichment' tools available through the meta-router so I know what's accessible."}],"resultDescription":"Returns a list of matching MCP servers or A2A tools relevant to the capability query, including endpoint metadata, descriptions compressed to reduce token usage, and safety-filtered results from the Prompt-Guard firewall.","failureModes":["Empty or vague query returns no meaningful matches","Query too broad returns an overwhelming or low-quality result set","Endpoint URL verification fails if URL is malformed or unreachable","Token compression may strip nuance from tool descriptions","Service unavailability if upstream MCP index is unreachable","402 payment required if micropayment credentials are missing or invalid"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover available MCP servers or A2A tools across a large index without maintaining individual connections to each. Particularly useful for swarm orchestration, capability routing, or when building agents that need to find the right tool for a task at runtime. Prefer over manual tool registries when you need 500+ tools accessible via a single connection with built-in prompt safety.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:20:56.149Z","isFirstParty":false,"canonicalSlug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-818d5a00"}