{"uid":"cap_1P9XCWasPtQeuP5QlYA1c","slug":"serp-extract-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-f9a59fe7","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://serp-extract.agentdiet.dev/v1/tool-search)","url":"https://serp-extract.agentdiet.dev/v1/tool-search?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"limit":{"type":"integer","default":20,"maximum":100,"minimum":1,"description":"Maximum number of items to return per page (1-100)"},"query":{"type":"string","minLength":1,"description":"Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify"},"cursor":{"type":"string","description":"Opaque pagination cursor for fetching the next page"}}},"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_-iVPYUU_Ma3fZeUkw6WVg","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"serp-extract.agentdiet.dev","brandSlug":"serp-extract-agentdiet-dev-mpp","brandBaseUrl":"https://serp-extract.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches an index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered tool matches for agent routing.","exampleAgentPrompt":"Search the MCP and A2A tool index for any servers or tools that can do context compression or GitHub security auditing — I need to find the right tool to route this task to.","exampleUseCases":[{"title":"Route task to right MCP server","prompt":"I need to find an MCP server that handles SEC filings retrieval — search the tool index for 'SEC filings' and tell me what's available so I can route my task correctly."},{"title":"Discover tools for lead enrichment pipeline","prompt":"Search the A2A and MCP tool registry for anything related to 'company enrichment' or 'B2B leads' — I'm building an outbound pipeline and need to know which tools are indexed."},{"title":"Verify a specific agent endpoint","prompt":"Can you check the tool discovery index with this URL — https://some-agent.example.com/api — to verify whether it's a recognized A2A or MCP endpoint?"}],"resultDescription":"Returns a list of matching MCP servers and A2A tools relevant to the query, with tool metadata compressed to roughly 85% fewer tokens and filtered through a Prompt-Guard firewall to remove malicious or unsafe tool descriptions.","failureModes":["Empty query string returns validation error","No matching tools found for obscure or highly specific queries","Endpoint URL verification may return unrecognized if not indexed","Rate limiting or payment failure (HTTP 402) if x402 payment not attached","Malformed query may return empty or low-confidence results"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability before routing a task — especially useful in swarm architectures where the right tool is unknown at design time. Prefer this over hardcoded tool registries when working across 500+ heterogeneous agent tools, or when you need token-efficient tool descriptions with built-in prompt injection protection.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:25:58.414Z","isFirstParty":false,"canonicalSlug":"serp-extract-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-8d70db86"}