{"uid":"cap_ZrH3jsIoJuyb75gygCBdQ","slug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-8ec2fb6e","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/agent-router)","url":"https://prompt-guard.agentdiet.dev/v1/agent-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_Q7LzTwQWW10RxC0varRIQ","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","exampleAgentPrompt":"Search your MCP and A2A tool index for anything that handles 'SEC filings' or 'company enrichment' and tell me which tools are available and how to call them.","exampleUseCases":[{"title":"Discover tools for SEC filings","prompt":"Search through your index of 500+ agent tools and find me anything that can pull SEC filings or EDGAR data — I need to know what's available and how to connect to it."},{"title":"Find a GitHub security audit tool","prompt":"I need a tool that can audit GitHub repos for security issues — can you search your MCP tool registry for 'github security' and tell me what comes up?"},{"title":"Route query to token compression tool","prompt":"Look up 'context compression' in your tool discovery index and tell me which MCP servers or A2A agents support it so I can use one in my pipeline."}],"resultDescription":"A list of matching MCP servers and A2A tools relevant to the query, with compressed descriptions (85% token reduction), endpoint URLs, capability summaries, and routing recommendations for integrating with the selected tool.","failureModes":["Empty or too-vague query returns low-relevance results","Queried capability not indexed returns empty match set","Prompt injection attempt blocked by Prompt-Guard firewall with rejection notice","Rate limiting or payment failure (x402) returns 402 Payment Required","Upstream MCP server temporarily unavailable may reduce result set"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool provides a specific capability at runtime, rather than hardcoding tool URLs. Especially useful for swarm architectures needing single-connection access to hundreds of tools, or when token budget is constrained and 85% compressed tool manifests are needed. Also appropriate when prompt injection safety is a concern and a firewall proxy is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:06.018Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-bcdfb4b9"}