{"uid":"cap_GaZlvE0KGDoHvDQmmfdcJ","slug":"github-audit-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-8e34efe7","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://github-audit.agentdiet.dev/v1/agent-tool-marketplace)","url":"https://github-audit.agentdiet.dev/v1/agent-tool-marketplace?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_BNPL46Hf2Yxxxpcg8k3xK","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"github-audit.agentdiet.dev","brandSlug":"github-audit-agentdiet-dev-mpp","brandBaseUrl":"https://github-audit.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and routes across 500+ MCP servers and A2A tools via a single meta-router endpoint with token compression and prompt-injection firewall.","exampleAgentPrompt":"Search the MCP tool marketplace for any indexed servers or A2A tools that can handle SEC filings or company enrichment, and give me the top matches with their capabilities.","exampleUseCases":[{"title":"Discovering tools for GitHub security audits","prompt":"I need to find MCP servers or A2A tools in the marketplace that specialize in GitHub security auditing or open-source vulnerability scanning — can you search and show me what's available?"},{"title":"Finding context compression agents","prompt":"Search the tool marketplace for any MCP endpoints that support context compression or token reduction, so I can route my agent through something that keeps costs low."},{"title":"Verifying a third-party MCP endpoint","prompt":"Can you check whether this URL — https://some-mcp-server.example.com — is listed and verified in the agent tool marketplace?"}],"resultDescription":"Returns a list of matching MCP servers or A2A tools relevant to the capability query, with compressed metadata about each tool's functionality, along with prompt-guard filtered results indicating safe endpoints. May also return verification status when an endpoint URL is submitted.","failureModes":["Query too vague returns no strong matches","Endpoint URL not indexed returns empty or unrecognized result","Malformed query string returns 400 error","Payment required but not provided returns HTTP 402","Prompt-Guard firewall blocks query flagged as injection attempt","Downstream MCP index temporarily unavailable causes partial results"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools are available for a given capability without hardcoding individual tool URLs. It is especially useful when building swarm-style agent architectures that need a single discovery point, when you want prompt-injection protection baked in, or when you want 85% token compression on tool metadata to reduce LLM context costs.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:51:31.720Z","isFirstParty":false,"canonicalSlug":"github-audit-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-b9feed5d"}