{"uid":"cap_9YCZJqD_khJGY6eOXkHN-","slug":"serp-extract-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-dde657ce","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://serp-extract.agentdiet.dev/v1/security-audit-dag)","url":"https://serp-extract.agentdiet.dev/v1/security-audit-dag?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_AZsd2GZpUWKy5AeJ1ItUv","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"serp-extract.agentdiet.dev","brandSlug":"serp-extract-agentdiet-dev-mpp","brandBaseUrl":"https://serp-extract.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Meta-router that searches and proxies 500+ MCP servers and A2A tools by capability query, with token compression and prompt-injection firewall.","exampleAgentPrompt":"Search the MCP and A2A tool index for anything that can do 'context compression' — I want to find the best available server for that capability and get back a token-efficient summary of my options.","exampleUseCases":[{"title":"Discovering tools for SEC filing retrieval","prompt":"Search the tool index for any MCP servers or A2A agents that can fetch or parse SEC filings — I need to find what's available before wiring up my research pipeline."},{"title":"Verifying a suspicious MCP endpoint URL","prompt":"Can you check if this endpoint URL passes the Prompt-Guard firewall scan and is safe to add to my swarm? Here's the URL: https://some-mcp-server.example.com/v1/tool"},{"title":"Finding a GitHub security audit tool for my agent","prompt":"Search the 500+ tool index for anything that covers GitHub security audits or code vulnerability scanning — I want to route my agent to whichever MCP server handles that best."}],"resultDescription":"Returns a list of matching MCP servers or A2A tools ranked by relevance to the query, with compressed metadata (85% token reduction), safety status from the Prompt-Guard firewall, and enough detail for an agent to select and invoke the right tool.","failureModes":["Empty or too-broad query returns low-relevance results","Unknown or malformed endpoint URL returns validation error","Prompt-Guard firewall blocks queries containing injection patterns","No matching tools found for a highly specific or niche capability query","Upstream index unavailability causes 503 or timeout response"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP server or A2A tool to call for a given capability, rather than hard-coding a tool URL. Especially valuable in multi-agent swarms where tool availability changes, or when you need a safety-filtered proxy layer to prevent prompt injection from untrusted tools. Prefer this over manual MCP registries when token efficiency matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:34:26.178Z","isFirstParty":false,"canonicalSlug":"serp-extract-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-8d70db86"}