{"uid":"cap_FE6nwF9cEVk65OsPnkTYj","slug":"hn-pulse-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-bdd7c12c","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/b2a-router)","url":"https://hn-pulse.agentdiet.dev/v1/b2a-router?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_7RcyUQTEAbryPveGf5jzV","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 to discover matching capabilities, routing queries through a prompt-guarded proxy with token compression","exampleAgentPrompt":"Search the MCP and A2A tool index for capabilities related to 'company enrichment' — I want to find which tools can help me enrich B2B lead data.","exampleUseCases":[{"title":"Finding a SEC filings tool for an agent","prompt":"Search the MCP tool meta-router for anything that can pull SEC filings or Edgar data — I need to wire up a financial research agent and want to know which tools are available."},{"title":"Discovering a prompt firewall across tool index","prompt":"Can you query the A2A and MCP tool discovery index for a prompt firewall or prompt injection guard capability? I'm building a safe multi-agent pipeline and need to find a suitable tool."},{"title":"Locating GitHub audit tools for security pipeline","prompt":"Search the meta-router index for MCP servers or A2A tools that handle GitHub security audits — I want to plug one into my DevSecOps workflow."}],"resultDescription":"Returns matched MCP servers and A2A tools from the 500+ indexed registry that are relevant to the capability query, with metadata about each tool. Responses are token-compressed (claimed 85% reduction) and filtered through a Prompt-Guard firewall to prevent prompt injection from upstream tools.","failureModes":["No matching tools found for the query — returns empty or low-relevance results","Query too vague or ambiguous — returns noisy broad matches","Upstream MCP server unavailable — proxy may return stale or degraded data","Payment failure (x402) — request blocked if USDC micropayment not confirmed","Rate limiting or quota exceeded — HTTP 429 response"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool provides a specific capability, rather than hardcoding a tool URL. Particularly useful when orchestrating multi-agent swarms that need to locate the right sub-tool at runtime, or when verifying whether a given endpoint URL is a compliant MCP/A2A tool. Prefer alternatives (direct tool calls) once the target tool is known.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:25:37.808Z","isFirstParty":false,"canonicalSlug":"hn-pulse-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-45369aae"}