{"uid":"cap_gsqu403BMoUIj4PYD5caO","slug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-f8f7c79e","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_1P7_ACD6QeqSjdpF0A_lk","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 and routes across 500+ indexed MCP servers and A2A tools by capability query, returning token-compressed, firewall-screened results via a single meta-router connection.","exampleAgentPrompt":"Search the MCP and A2A tool index for any available capabilities around 'SEC filings' or 'company enrichment' — I want a compressed, firewall-checked list of matching servers I can route to.","exampleUseCases":[{"title":"Discovering on-chain risk tools","prompt":"Search across all indexed MCP servers and A2A tools for anything that handles on-chain risk or DEX token intelligence — give me the best matches with token-compressed summaries."},{"title":"Verifying a suspicious endpoint URL","prompt":"Can you check if this endpoint URL is indexed and safe to call? I want to know if it's been screened by the prompt-injection firewall before I route my agent to it."},{"title":"Finding GitHub security audit capabilities","prompt":"I need to find an MCP tool that can do GitHub security audits for my repo — search the meta-router index and tell me what's available with the least token overhead."}],"resultDescription":"Returns a token-compressed (up to 85% reduction) list of matching MCP servers or A2A tool endpoints relevant to the query, filtered through the Prompt-Guard firewall to remove malicious or injection-prone results. Each result includes capability metadata, routing information, and safety signals.","failureModes":["No matching tools found for the given query — returns empty result set","Query string is empty or too short — returns validation error","Endpoint URL provided for verification is not indexed — returns not-found response","Payment not received (HTTP 402) — request blocked until x402 micropayment is completed","Firewall flags all candidates as unsafe — returns empty or redacted results"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover, vet, and route to one of hundreds of MCP or A2A-compatible tools without maintaining its own registry. It is especially valuable when token budget is constrained (85% compression), when prompt-injection safety screening is required before calling untrusted endpoints, or when a single connection point to the broader agent tool ecosystem is preferred over direct multi-server discovery.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:34.303Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-f8f7c79e"}