{"uid":"cap_M4rb4kC5oKNZXOYPgaZXO","slug":"x402broker-com-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-cd80db0b","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://x402broker.com/v1/universal-mcp-gateway)","url":"https://x402broker.com/v1/universal-mcp-gateway?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_0kBKCNHvvAW0_39USUW5R","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"x402broker.com","brandSlug":"x402broker-com-mpp","brandBaseUrl":"https://x402broker.com","brandDocsUrl":null,"whatItDoes":"Searches and routes to 500+ MCP servers and A2A agent tools via a single meta-gateway endpoint with token compression and prompt injection firewall","exampleAgentPrompt":"Search the universal MCP gateway for tools that handle 'SEC filings' and tell me which A2A endpoints are available with their capabilities and compression stats.","exampleUseCases":[{"title":"Agent tool discovery for code security","prompt":"Find me all the MCP servers and A2A tools indexed in the universal gateway that can do GitHub security auditing or dependency vulnerability scanning."},{"title":"Capability routing for SEC data","prompt":"I need to find which tools in your MCP index can pull SEC filings — search for 'SEC filings' and show me what's available with the best token efficiency."},{"title":"Prompt-safe proxy verification","prompt":"Check the universal MCP gateway to see if the endpoint https://some-tool.example.com/api is indexed and verified as safe to proxy through your Prompt-Guard firewall."}],"resultDescription":"Returns a list of matching MCP servers or A2A tools from a 500+ item index, including capability descriptions, endpoint metadata, token compression ratios, and safety/firewall status — all compressed to approximately 15% of raw token cost.","failureModes":["Empty query string returns validation error","No matching tools found for obscure capability queries returns empty result set","Unindexed or unknown endpoint URL returns not-found status","Rate limiting or payment failure (x402) blocks access","Prompt injection attempts detected by Prompt-Guard firewall may return filtered/rejected response"],"whenToPreferThis":"Use this endpoint when an AI agent needs to discover, route to, or verify MCP servers and A2A tools from a large aggregated index, especially when token budget is a concern (85% compression) or when safety from prompt injection in third-party tools is required. Prefer this over manually maintaining a list of tool endpoints or calling individual registries separately.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:56.742Z","isFirstParty":false,"canonicalSlug":"x402broker-com-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-1b29e69c"}