{"uid":"cap_X5fTLHVbhi0f1TWITGtSk","slug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-95411dfe","name":"Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router — Broker Catalog","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/broker/catalog)","url":"https://prompt-guard.agentdiet.dev/v1/broker/catalog?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_gwpFUOn1JAk_3BFa6mr4R","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 an index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered results for agent routing.","exampleAgentPrompt":"Search the MCP and A2A tool catalog for anything that can handle SEC filings or company enrichment — I want to know which tools are available so I can route my agent there.","exampleUseCases":[{"title":"Discover tools for GitHub security audits","prompt":"Search the agent tool catalog for any MCP servers or A2A endpoints that can do GitHub security audits or code vulnerability scanning — show me what's available."},{"title":"Find on-chain risk analysis agents","prompt":"I need to find an A2A or MCP tool that handles on-chain risk analysis or DeFi token intelligence — can you search the broker catalog and tell me what's indexed?"},{"title":"Route swarm agent to email verification","prompt":"My swarm needs a tool that does email verification and B2B lead enrichment — search the MCP catalog for matching endpoints so I can route the right agent there."}],"resultDescription":"A filtered, token-compressed catalog of matching MCP servers and A2A tool descriptors relevant to the query, including routing metadata and Prompt-Guard firewall validation status.","failureModes":["Empty query string returns validation error","No matching tools found for niche or unsupported capability queries","Firewall blocks results containing prompt-injection indicators","Upstream MCP server index unavailable returns 5xx","x402 payment failure prevents access — returns HTTP 402"],"whenToPreferThis":"Use this endpoint when an agent needs to dynamically discover and route to the right MCP server or A2A tool from a large index without hardcoding tool lists. Ideal for swarm architectures, meta-agents, or orchestrators that need capability-based routing with built-in prompt-injection protection and token-efficient responses.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:22:53.908Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-95411dfe"}