{"uid":"cap_ameeGYq9oN4fxqrEhitQk","slug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-25cc1fc2","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/a2a-router)","url":"https://prompt-guard.agentdiet.dev/v1/a2a-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_SJbXRYpkngdQwDFE2XNs_","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+ indexed MCP servers and A2A tools via a single connection, with token compression and prompt injection firewall protection.","exampleAgentPrompt":"Search the A2A and MCP tool index for anything that can handle SEC filings retrieval — I want a single compressed tool manifest I can use without juggling multiple server connections.","exampleUseCases":[{"title":"Discover tools for GitHub security auditing","prompt":"Find me any MCP servers or A2A tools in the index that can do GitHub security audits — I want to see what's available so I can wire one into my pipeline."},{"title":"Route agent to company enrichment tool","prompt":"Search the tool router for something that handles B2B company enrichment — I need a safe-proxied connection so I don't have to manage the MCP server myself."},{"title":"Find context compression capability","prompt":"Look up whether there are any tools in the MCP index that support context compression — I'm trying to reduce token usage in my agent swarm."}],"resultDescription":"A compressed manifest (up to 85% token reduction) listing matching MCP servers or A2A tools relevant to the query, with routing metadata and Prompt-Guard firewall filtering applied. May also return compliance status if an endpoint URL is submitted for verification.","failureModes":["Empty result set if no indexed tools match the capability query","Rate limiting or payment required error (HTTP 402) if x402 payment not attached","Firewall rejection if query is flagged by Prompt-Guard as a prompt injection attempt","Timeout if upstream MCP server index is unavailable","Invalid query format if the query field is missing or empty"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover and route to one of many MCP servers or A2A tools without maintaining individual connections to each. It is especially valuable for agent swarms needing a single meta-router with built-in token compression and prompt injection protection, rather than a raw directory or static tool list.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:25:43.004Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-bcdfb4b9"}