{"uid":"cap_5dxk8ZRNxr8WBRYLxYJCm","slug":"agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-73892fe1","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://agentdiet.dev/v1/crypto-alpha-dag)","url":"https://agentdiet.dev/v1/crypto-alpha-dag?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_hhvY9p73IWC_3QMYePPPp","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"agentdiet.dev","brandSlug":"agentdiet-dev-mpp","brandBaseUrl":"https://agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches an index of 500+ MCP servers and A2A tools by capability query, returning token-compressed results through a prompt-injection firewall","exampleAgentPrompt":"Search the MCP and A2A tool index for anything that can handle 'company enrichment' — I want to find the best available tool with compressed metadata so I'm not burning tokens.","exampleUseCases":[{"title":"Discover tools for SEC filings","prompt":"I need to find MCP servers or A2A tools that can pull SEC filings — search the index for 'sec filings' and give me what's available."},{"title":"Validate a suspicious endpoint URL","prompt":"Can you check if this endpoint URL is indexed and safe to call: https://some-mcp-server.example.com/v1/tool — run it through the tool discovery firewall for me."},{"title":"Find context compression capability","prompt":"Search the A2A and MCP tool registry for anything that offers context compression — I want to reduce token usage in my agent pipeline and need to know what tools are indexed for that."}],"resultDescription":"Returns a structured object listing matched MCP servers or A2A tools relevant to the capability query, with token-compressed metadata (up to 85% reduction) and results filtered through a Prompt-Guard firewall to block injected payloads.","failureModes":["Empty query string returns validation error (query is required, minLength 1)","No matching tools found returns empty results set","Endpoint URL verification may return unrecognized/not-indexed status","Payment not fulfilled triggers HTTP 402 response blocking result delivery","Firewall may block results if query itself resembles prompt injection"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hardcoding tool endpoints. Especially useful when token efficiency matters (85% compression) and when operating in untrusted environments where prompt injection from tool descriptions is a concern. Prefer over manual tool registries when the tool landscape is large or frequently changing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:07.727Z","isFirstParty":false,"canonicalSlug":"agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-swarm-router-3ece579a"}