{"uid":"cap_51dPrZa_tvXxXtySvpwYI","slug":"defi-yield-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-1e90cc53","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://defi-yield.agentdiet.dev/v1/mcp-gateway)","url":"https://defi-yield.agentdiet.dev/v1/mcp-gateway?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_ANXUu8ttZ1SBC1n6j9QhP","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"defi-yield.agentdiet.dev","brandSlug":"defi-yield-agentdiet-dev-mpp","brandBaseUrl":"https://defi-yield.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and routes across 500+ indexed MCP servers and A2A tools via a single meta-gateway connection with 85% token compression and prompt-injection firewall protection.","exampleAgentPrompt":"Search the MCP gateway for tools that do 'github security auditing' and return the top 10 results.","exampleUseCases":[{"title":"Discovering SEC filing tools for an agent","prompt":"Search the MCP meta-router for any tools that handle SEC filings or financial document retrieval, and give me up to 20 results."},{"title":"Finding context compression endpoints","prompt":"I need to find MCP servers that offer context compression or token reduction — can you search the A2A tool index for that capability?"},{"title":"Verifying a specific MCP endpoint exists","prompt":"Check the MCP gateway to see if there's a registered tool or server at this URL: https://example-mcp-server.dev/v1 — does it show up in the index?"}],"resultDescription":"Returns a paginated list of matching MCP servers or A2A tools with capability descriptions, endpoint URLs, and metadata. Each page contains up to 100 items and includes an opaque cursor for fetching the next page.","failureModes":["Empty or too-short query returns no results or validation error","Cursor from a different session may be invalid or expired","Limit exceeding 100 returns a validation error","Unrecognized capability terms may return zero matches","Payment not fulfilled (HTTP 402) blocks access","Prompt-guard firewall may reject queries containing injection-like patterns"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool provides a specific capability without hardcoding individual server URLs. It is the right choice when operating in multi-agent swarm architectures where tool availability must be queried at runtime, or when you want a single connection point that indexes 500+ tools with built-in prompt-injection firewall protection and token-compressed responses.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:37:35.475Z","isFirstParty":false,"canonicalSlug":"defi-yield-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-b31cc8b3"}