{"uid":"cap_pZniGf9uXXJm_FN2g4GsO","slug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-3a8eda23","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://preflight.agentdiet.dev/v1/x402-broker)","url":"https://preflight.agentdiet.dev/v1/x402-broker?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_sG0DJ-ff6fuBLPND4-CSI","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"preflight.agentdiet.dev","brandSlug":"preflight-agentdiet-dev-mpp","brandBaseUrl":"https://preflight.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches an index of 500+ MCP servers and A2A tools by capability query, returning token-compressed, Prompt-Guard-filtered results through a single meta-router connection.","exampleAgentPrompt":"Search the agentdiet meta-router index for MCP servers or A2A tools that can handle 'company enrichment' and show me the top matches with token-compressed summaries.","exampleUseCases":[{"title":"Discover SEC filing tools for research agent","prompt":"I need to find MCP servers or A2A tools that can pull SEC filings — search the tool index for 'SEC filings' and tell me what's available."},{"title":"Route to GitHub security audit capability","prompt":"My agent needs a tool that can do GitHub security audits — can you search the meta-router for 'github security' and show me which MCP tools are indexed for that?"},{"title":"Find context compression tool for token savings","prompt":"I'm trying to reduce token usage in my agent pipeline — search for 'context compression' tools in the A2A and MCP index and return whatever matches you find."}],"resultDescription":"Returns a token-compressed (up to 85% reduction) list of matching MCP servers or A2A tools from an index of 500+, filtered through a Prompt-Guard firewall to remove prompt injection risks, with metadata about each tool's capabilities and connection details.","failureModes":["Empty query string returns validation error","No tools found matching query returns empty result set","Prompt-Guard firewall may block results containing suspicious payloads","Endpoint URL verification may return unresolvable or offline status","Payment required (HTTP 402) if x402 micropayment not attached"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool can fulfill a capability at runtime, especially when routing across a large heterogeneous tool ecosystem. Prefer it over hardcoding tool URLs when the right tool is unknown in advance, or when you need a safe-proxied, token-efficient single connection to the broader MCP/A2A ecosystem.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:19:42.856Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-f8f7c79e"}