{"uid":"cap_MqpzPTfU83FnsVRkUhuQx","slug":"alpha-stream-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-9bac13f2","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://alpha-stream.agentdiet.dev/v1/a2a-router)","url":"https://alpha-stream.agentdiet.dev/v1/a2a-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_bjnOQ--fVderDFDX16LWO","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"alpha-stream.agentdiet.dev","brandSlug":"alpha-stream-agentdiet-dev-mpp","brandBaseUrl":"https://alpha-stream.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches a meta-index of 500+ MCP servers and A2A tools by capability query, returning compressed, firewall-filtered routing results for agent orchestration.","exampleAgentPrompt":"Search the A2A and MCP tool index for 'SEC filings' — I want to find which servers or tools can handle that capability so I can route my agent to the right one.","exampleUseCases":[{"title":"Routing agent to SEC filings tool","prompt":"Search the MCP tool index for 'SEC filings' and tell me which servers or A2A endpoints support that capability so I can wire my agent up to the right one."},{"title":"Discovering GitHub security audit tools","prompt":"I need to find all available MCP servers that handle GitHub security audits — can you query the tool discovery router for 'github security' and show me what comes back?"},{"title":"Verifying a specific MCP endpoint","prompt":"Can you check whether https://some-mcp-server.example.com is a compliant and reachable endpoint by running it through the A2A tool discovery router?"}],"resultDescription":"A compressed (up to 85% token reduction) list of matching MCP servers or A2A tool records relevant to the query, including endpoint metadata, capability tags, and routing hints, filtered through a Prompt-Guard firewall.","failureModes":["Empty query string returns validation error","No matching tools found for obscure or narrow capability queries","Endpoint URL verification may return unreachable or non-compliant status for invalid URLs","Rate limiting or payment failure (HTTP 402) if x402 payment is not provided","Downstream MCP index may be stale or incomplete for newly published servers"],"whenToPreferThis":"Use this endpoint when an agent needs to dynamically discover which MCP server or A2A tool supports a given capability across a broad ecosystem (500+ servers) rather than hardcoding tool URLs. Prefer it over manual tool registries when you need compressed, firewall-sanitized results and want a single connection point for swarm routing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:24:01.934Z","isFirstParty":false,"canonicalSlug":"alpha-stream-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-4c5998e1"}