{"uid":"cap_3v_G2b5WLPv62GVXzCaRS","slug":"hn-pulse-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-71dab4a8","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://hn-pulse.agentdiet.dev/v1/tool-broker)","url":"https://hn-pulse.agentdiet.dev/v1/tool-broker?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_BiMyyJRNP-HgSDfHxazOW","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"hn-pulse.agentdiet.dev","brandSlug":"hn-pulse-agentdiet-dev-mpp","brandBaseUrl":"https://hn-pulse.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and routes across 500+ indexed MCP servers and A2A tools using a single connection with token compression and prompt-injection firewall","exampleAgentPrompt":"Search the tool broker for MCP servers or A2A tools that handle SEC filings and company enrichment — I want to find available capabilities in a single call.","exampleUseCases":[{"title":"Discover tools for GitHub security audits","prompt":"Can you search the tool broker for any MCP or A2A tools that do GitHub security auditing or code scanning? I want to see what's available before wiring up my agent pipeline."},{"title":"Find a safe proxy for web distillation","prompt":"I need to find an MCP server that handles web distillation or webpage summarization — can you query the tool broker with 'web distillation' and show me what comes back?"},{"title":"Route agent to on-chain risk analysis","prompt":"Look up 'on-chain risk' in the tool broker so I can find an A2A tool my agent can call for DeFi wallet screening — I want a compressed list of what's indexed."}],"resultDescription":"Returns a list of matching MCP servers or A2A tools relevant to the search query, with compressed metadata (up to 85% token reduction) describing each tool's capabilities, endpoint URLs, and schema details, filtered through a Prompt-Guard firewall to prevent prompt-injection attacks.","failureModes":["Missing or empty 'query' parameter returns a 400 validation error","No matching tools found for an obscure or misspelled capability query returns an empty result set","Rate limiting or payment failure via x402 returns a 402 Payment Required response","Upstream MCP server index unavailable may return degraded or stale results","Overly broad queries may return too many low-relevance tools"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability without hardcoding individual endpoint URLs. It is especially useful when building swarm orchestrators, multi-agent pipelines, or capability routing layers that need to stay current with a large and changing tool ecosystem without blowing token budgets.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:25.921Z","isFirstParty":false,"canonicalSlug":"hn-pulse-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-45369aae"}