{"uid":"cap_2fHb_PYjgqVWDPRN2D3BH","slug":"arxiv-digest-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-72c936a0","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://arxiv-digest.agentdiet.dev/v1/execute)","url":"https://arxiv-digest.agentdiet.dev/v1/execute?utm_source=zero.xyz","method":"POST","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_GTqnPcCc98F7Cc1B4Y8vA","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"arxiv-digest.agentdiet.dev","brandSlug":"arxiv-digest-agentdiet-dev-mpp","brandBaseUrl":"https://arxiv-digest.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and routes across 500+ MCP servers and A2A tools via a single connection, returning compressed, firewall-filtered results","exampleAgentPrompt":"Search the meta-router for MCP servers and A2A tools that can handle SEC filings and financial intelligence — I want a list of the best matching tools with compressed metadata.","exampleUseCases":[{"title":"Discover tools for GitHub security auditing","prompt":"Find me all available MCP servers or A2A tools that can audit GitHub repositories for license risk and supply-chain vulnerabilities — I need the top results with their descriptions compressed."},{"title":"Route to a company enrichment tool","prompt":"Search for any available agent tools in the meta-router that do B2B company enrichment, tech stack detection, and contact lead extraction so I can wire one into my sales pipeline."},{"title":"Find a prompt firewall or content moderation tool","prompt":"Can you look up which MCP servers in the index offer prompt injection protection or a firewall for filtering unsafe LLM inputs? I want to route my agent swarm through a safe proxy."}],"resultDescription":"Returns a list of matched MCP servers or A2A tools relevant to the query, with 85% token-compressed metadata, safety-filtered through the Prompt-Guard firewall. Each result includes tool name, capability description, and routing information.","failureModes":["Empty query string returns validation error","No matching tools found for niche query returns empty results","Rate limit or payment failure returns HTTP 402","Prompt-Guard firewall blocks queries flagged as injection attempts","Malformed or non-existent endpoint URL passed for verification returns error"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover, search, or route to one of 500+ MCP servers or A2A tools from a single connection point, especially when token budget is a concern (85% compression) or when safety filtering against prompt injection is required. Prefer this over direct tool invocation when the right downstream tool is unknown and needs to be discovered at runtime.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:32:22.011Z","isFirstParty":false,"canonicalSlug":"arxiv-digest-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-0860614f"}