{"uid":"cap_By_IVbNwL7hvHwAVqD8rW","slug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-cfa0ee34","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/workflows/execute)","url":"https://prompt-guard.agentdiet.dev/v1/workflows/execute?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_gau5P5oEBXFUPPe1oIs7m","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 a meta-index of 500+ MCP servers and A2A tools by capability query, returning matching endpoints with token-compressed results routed through a Prompt-Guard firewall.","exampleAgentPrompt":"Search the MCP tool index for anything that can do SEC filings or company enrichment — find me the best matching server from the 500+ indexed ones.","exampleUseCases":[{"title":"Discover GitHub audit MCP server","prompt":"I need to find an MCP server that can run GitHub security audits on a repo — search the tool index for 'github security' and tell me what's available."},{"title":"Route to context compression tool","prompt":"Find me the right A2A tool for compressing long context windows — search for 'context compression' in the MCP index and return the top matches."},{"title":"Locate B2B lead enrichment agent","prompt":"Which MCP servers or A2A tools in the index support B2B lead enrichment or company data lookups? Search for 'company enrichment' and show me what's there."}],"resultDescription":"A token-compressed (up to 85% reduction) list of matching MCP servers or A2A tools relevant to the query, filtered through the Prompt-Guard firewall, including endpoint metadata and routing information.","failureModes":["Empty query string returns validation error","No matching tools found for niche or misspelled queries","Prompt-Guard firewall may block results flagged as unsafe","Upstream MCP server unavailability may reduce result set","Payment failure (x402) may block execution at $0.01/call"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hardcoding a specific tool. Ideal for swarm orchestration, meta-routing, or when the required capability is unknown at design time. The built-in Prompt-Guard firewall adds safety filtering not present in raw tool registries.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:22:41.745Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-bcdfb4b9"}