{"uid":"cap_jUE32nPcil1Ger9ldKHVM","slug":"defi-yield-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-adbe5898","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/tool-broker)","url":"https://defi-yield.agentdiet.dev/v1/tool-broker?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_Mwjc9uHsEuXWj3TzGmAFg","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 a meta-index of 500+ MCP servers and A2A tools by capability query and returns matching endpoints with token-compressed results through a built-in prompt-injection firewall.","exampleAgentPrompt":"Can you search the tool-broker index for MCP servers or A2A tools that handle 'SEC filings' and return the best matches with compressed metadata?","exampleUseCases":[{"title":"Discovering tools for lead enrichment","prompt":"Search your tool index for any MCP or A2A tools that can do B2B company lead enrichment or tech stack detection — I want to route my sales agent to the right one."},{"title":"Finding a prompt injection firewall tool","prompt":"Look through the MCP and A2A tool registry for anything that does prompt-injection scanning or jailbreak detection so I can wire it into my agent pipeline."},{"title":"Routing a swarm agent to GitHub audit tools","prompt":"I'm building an agent swarm and need to find all available MCP tools that handle GitHub repository security audits — can you query the tool-broker index for that?"}],"resultDescription":"Returns a list of matching MCP servers or A2A tool endpoints relevant to the search query, with 85% token-compressed metadata, capability descriptions, and routing information, filtered through the Prompt-Guard firewall to remove malicious content.","failureModes":["Empty or too-vague query returns no matches","Query for an unsupported domain returns empty results","Idempotency-Key collision causes unexpected deduplication","Upstream MCP server unavailable leading to partial results","Malformed query string causes 400 validation error","Payment/402 gate failure if x402 token is missing or expired"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to call for a given capability rather than hard-coding a specific tool URL. Especially useful for swarm architectures where tools are selected at runtime, or when you want a single safe-proxied entry point with built-in prompt-injection protection and token-efficient responses across a large tool catalog.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T00:37:02.423Z","isFirstParty":false,"canonicalSlug":"defi-yield-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-b31cc8b3"}