{"uid":"cap_GIyNTadgW7xcpzLwa6SEv","slug":"github-audit-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-9c5eae82","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://github-audit.agentdiet.dev/v1/x402-broker)","url":"https://github-audit.agentdiet.dev/v1/x402-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_501p4std3h0UkmgLHAaSV","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"github-audit.agentdiet.dev","brandSlug":"github-audit-agentdiet-dev-mpp","brandBaseUrl":"https://github-audit.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and routes across 500+ MCP servers and A2A tools through a single meta-router endpoint with token compression and prompt injection firewall","exampleAgentPrompt":"Search the MCP and A2A tool index for servers that handle 'GitHub security auditing' — I need to find the best available tool and get back a compressed, firewall-checked result I can pass to my agent.","exampleUseCases":[{"title":"Discover tools for SEC filing retrieval","prompt":"Find me all available MCP servers and A2A tools in the index that can pull SEC filings or EDGAR data for public companies — I want the top matches with compressed metadata."},{"title":"Route agent swarm to right capability","prompt":"My agent swarm needs to handle 'company lead enrichment' — search the meta-router index for the best available tools and route me to the right one with token-efficient results."},{"title":"Verify and proxy a specific tool endpoint","prompt":"Can you check if this endpoint URL is a valid, safe tool I can call through the proxy: https://some-mcp-server.example.com — I want to make sure it passes the Prompt-Guard firewall before my agent uses it."}],"resultDescription":"Returns a list of matching MCP servers or A2A tools relevant to the query, with compressed metadata (85% token reduction), safety-checked through a Prompt-Guard firewall, including endpoint URLs, capability descriptions, and routing information.","failureModes":["Query too vague returns low-confidence or empty matches","Endpoint URL verification fails if the target is unreachable","Prompt injection attempts blocked by Prompt-Guard firewall with rejection notice","Payment required (HTTP 402) if x402 credentials are missing or invalid","Rate limiting if many queries are submitted without idempotency keys"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool handles a specific capability, rather than hardcoding tool endpoints. Ideal for agent swarms that need to route tasks to the right specialized tool at runtime, or when you want a single safe-proxy connection instead of managing 500+ individual tool integrations. The 85% token compression makes it especially useful when working within tight context windows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T00:34:38.647Z","isFirstParty":false,"canonicalSlug":"github-audit-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-b9feed5d"}