{"uid":"cap_uG_GUhiruquOP62WMyxym","slug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-50f66f3d","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/b2a-router)","url":"https://prompt-guard.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_yFwXJYa3luGAm36L7PK9G","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 to 500+ MCP servers and A2A tools via a single connection, with token compression and prompt injection firewall.","exampleAgentPrompt":"Search the MCP tool index for any servers or A2A tools that handle SEC filings or company enrichment, and route me to the best match.","exampleUseCases":[{"title":"Discovering tools for GitHub security audits","prompt":"Search your MCP index for any tools that can audit GitHub repositories for security vulnerabilities — I want to find the best available server to route to."},{"title":"Finding DEX token intelligence tools","prompt":"Look through the 500+ MCP servers you index and find me something that can do DEX token intelligence or on-chain risk analysis."},{"title":"Routing to a context compression capability","prompt":"I need to compress a large context window before sending it to my agent — search the MCP tool router for a context compression tool and point me to it."}],"resultDescription":"Returns a list of matching MCP servers or A2A tool endpoints relevant to the search query, with compressed metadata and firewall-filtered results indicating the best routing target for the requested capability.","failureModes":["Empty result set if no indexed tool matches the query","Firewall rejection if query contains prompt injection patterns","Payment required (HTTP 402) if x402 credentials are missing or invalid","Timeout if upstream MCP servers are unresponsive","Malformed query returns validation error"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover and route to one of 500+ MCP servers or A2A tools without maintaining individual connections to each, especially when token efficiency matters (85% compression) or when prompt injection protection is required at the routing layer.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:25:51.736Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-bcdfb4b9"}