{"uid":"cap_ZeHBPTdYWQuvxIoiNPJoP","slug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-1e0cae71","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/agent-tool-marketplace)","url":"https://email-verify.agentdiet.dev/v1/agent-tool-marketplace?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_LCdZozYq9z0nriOXqyVwb","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 across 500+ MCP servers and A2A tools via a single meta-router endpoint with token compression and prompt firewall protection.","exampleAgentPrompt":"Search the agent tool marketplace for available MCP servers and A2A tools that handle 'github security' — I want to find what's indexed and route to the right tool.","exampleUseCases":[{"title":"Discovering SEC Filing Tools for Agents","prompt":"Search the agent tool marketplace for any MCP servers or A2A tools that can pull SEC filings — I need to wire up my research agent to the right capability."},{"title":"Validating a Specific Endpoint in the Index","prompt":"Can you check whether the endpoint at https://email-verify.agentdiet.dev/v1/sec-filings is actually listed and safe to proxy through the A2A tool marketplace?"},{"title":"Finding Context Compression Capabilities","prompt":"Search the tool marketplace for 'context compression' — I want to find an MCP server that can reduce token usage in my agent pipeline."}],"resultDescription":"Returns a structured object listing matching MCP servers or A2A tools relevant to the query, including tool metadata, capability descriptions, and routing information, with token-compressed payloads and prompt-firewall filtering applied.","failureModes":["Empty query string returns validation error (query is required and minLength 1)","Query matches no indexed tools — empty or minimal result set returned","Endpoint URL provided for verification is not in the index — returns unverified/not-found status","Payment not provided or insufficient — HTTP 402 response requiring x402 USDC micropayment","Marketplace index temporarily unavailable — service connectivity error"],"whenToPreferThis":"Choose this endpoint when you need to discover or route to MCP servers or A2A tools across a broad index (500+) from a single connection, especially when token efficiency matters or you need prompt-firewall safety guarantees. Prefer it over manually querying individual tool registries or building custom MCP routing logic.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:08.127Z","isFirstParty":false,"canonicalSlug":"email-verify-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-818d5a00"}