{"uid":"cap_VOaBsfwMLo8Gk4cfBbYj9","slug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-120ac577","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://prompt-guard.agentdiet.dev/v1/mcp-router)","url":"https://prompt-guard.agentdiet.dev/v1/mcp-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_AoHfJjFF9V1aw48YxRY1-","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"prompt-guard.agentdiet.dev","brandSlug":"prompt-guard-agentdiet-dev-mpp","brandBaseUrl":"https://prompt-guard.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and routes across 500+ MCP servers and A2A agent tools via a single connection, with token compression and prompt injection firewall protection.","exampleAgentPrompt":"Search the MCP tool network for any servers that handle SEC filings or company enrichment — I need to route my agent to the right one.","exampleUseCases":[{"title":"Route agent to GitHub audit tool","prompt":"Find me an MCP server in the network that can do GitHub security audits — I want to point my agent at it automatically."},{"title":"Discover token-compression capable servers","prompt":"Which MCP servers in your index support context compression? I'm running into token limits and need to find the right tool to handle it."},{"title":"Safe-proxy lookup for OSINT capability","prompt":"Search your tool registry for anything that does domain OSINT or email verification, and make sure it passes the prompt injection firewall before routing my swarm to it."}],"resultDescription":"Returns a filtered list of matching MCP servers or A2A agent endpoints ranked by relevance to the query, with compressed tool schemas (85% token reduction) and firewall-cleared metadata indicating which tools passed prompt-injection safety checks.","failureModes":["Empty query string returns validation error (minLength:1 required)","No matching tools found for an overly specific or unsupported capability query","Firewall blocks a matching tool due to detected prompt injection patterns","Timeout if queried against a large index with broad terms","Upstream MCP server unavailable, returning partial results","x402 payment failure resulting in 402 response with no results"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover and route to the right MCP server or A2A tool from a large index without maintaining individual connections to each. Especially valuable when token budget is tight (85% compression), when prompt injection safety is a concern, or when operating a multi-agent swarm that needs centralized tool routing across 500+ servers. Prefer over direct MCP connections when the target tool is unknown and needs to be discovered at runtime.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:25:39.332Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-bcdfb4b9"}