{"uid":"cap_r-QVQI6es1XH_4oI905xL","slug":"hn-pulse-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-32432f5f","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/mesh)","url":"https://hn-pulse.agentdiet.dev/v1/mesh?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_xi7Fm6woO5fEt_1PGiL80","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 a meta-index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered results with a single connection.","exampleAgentPrompt":"Search the MCP and A2A tool index for 'context compression' and return the top 10 matching servers or tools I can connect to.","exampleUseCases":[{"title":"Discover tools for SEC filing research","prompt":"Search the MCP tool index for 'SEC filings' and show me the top 5 available endpoints I can use to pull public company financial data."},{"title":"Find email verification agents","prompt":"Can you search for MCP or A2A tools that handle email verification and return up to 20 results so I can pick the best one for my lead enrichment pipeline?"},{"title":"Route agent to on-chain risk tools","prompt":"Look up 'on-chain risk' in the MCP swarm index — I need to find a tool my agent can call to flag suspicious smart contracts before executing a trade."}],"resultDescription":"A paginated list of matching MCP servers and A2A tool descriptors filtered by the capability query, with 85% token-compressed metadata and Prompt-Guard firewall applied. Includes tool names, capability descriptions, endpoint URLs, and an opaque cursor for fetching the next page.","failureModes":["Query too vague returns low-relevance or empty results","Rate limiting or 402 payment required if USDC micropayment not settled","Cursor expiry causes pagination to restart","Firewall (Prompt-Guard) blocks queries flagged as prompt injection attempts","Service unavailability returns 5xx with no fallback index"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools exist for a given capability, rather than hardcoding tool URLs. Especially useful for swarm orchestration, capability routing, or when the target tool category is unknown at build time. Prefer over manual MCP registries when token efficiency matters (85% compression) or when safety filtering of discovered endpoints is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:32:59.442Z","isFirstParty":false,"canonicalSlug":"hn-pulse-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-45369aae"}