{"uid":"cap_4QPiNDpwnfqIKLbD0uxQW","slug":"mcp-compiler-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-affdc76c","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://mcp-compiler.agentdiet.dev/v1/b2a-router)","url":"https://mcp-compiler.agentdiet.dev/v1/b2a-router?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_QaqqOMFOLZWtZIoGTb7Qv","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"mcp-compiler.agentdiet.dev","brandSlug":"mcp-compiler-agentdiet-dev-mpp","brandBaseUrl":"https://mcp-compiler.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches an index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered results via a single connection","exampleAgentPrompt":"Search the MCP tool index for servers that can handle SEC filings and company enrichment — I want to know what's available in the 500+ tool registry.","exampleUseCases":[{"title":"Discovering tools for a new agent workflow","prompt":"I'm building an agent pipeline and need to find MCP servers that handle GitHub security audits — can you search the tool registry and tell me what's available?"},{"title":"Routing a swarm to the right capability","prompt":"My agent swarm needs to handle context compression tasks — search the MCP index for tools that support this so I can route requests to the best one."},{"title":"Verifying a specific MCP endpoint","prompt":"Can you check if this endpoint URL is a valid, indexed MCP server in the registry: https://mcp-compiler.agentdiet.dev/v1/b2a-router?"}],"resultDescription":"Returns a compressed, token-optimized list of matching MCP servers or A2A tools from a 500+ item index, including endpoint metadata, capability descriptions, and safety-filtered results from the Prompt-Guard firewall. Response is a JSON object with tool matches relevant to the query.","failureModes":["Empty query string returns validation error (query is required, minLength 1)","No matching tools found for niche or misspelled capability query","Endpoint URL verification returns unrecognized/unlisted result if URL is not in index","Rate limiting or payment failure (x402) if usage quota exceeded","Firewall may filter or flag results if tool metadata triggers Prompt-Guard rules"],"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 hardcoding tool URLs. Especially useful in multi-agent swarm architectures where the right downstream tool is not known in advance. Prefer over manual tool registries or static lists when you need 500+ tool coverage, token-compressed responses, and built-in prompt injection safety filtering.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:52.422Z","isFirstParty":false,"canonicalSlug":"mcp-compiler-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-3602c71e"}