{"uid":"cap_C9vl-QkgFoOXypEV3PHYa","slug":"onchain-risk-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-2cdc4968","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://onchain-risk.agentdiet.dev/v1/mcp-gateway)","url":"https://onchain-risk.agentdiet.dev/v1/mcp-gateway?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"limit":{"type":"integer","default":20,"maximum":100,"minimum":1,"description":"Maximum number of items to return per page (1-100)"},"query":{"type":"string","minLength":1,"description":"Capability search query (e.g. 'context compression', 'github security', 'sec filings', 'company enrichment') or endpoint URL to verify"},"cursor":{"type":"string","description":"Opaque pagination cursor for fetching the next page"}}},"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_P_PCyt9AN-Nr7wJ8HXaVa","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"onchain-risk.agentdiet.dev","brandSlug":"onchain-risk-agentdiet-dev-mpp","brandBaseUrl":"https://onchain-risk.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Searches and discovers MCP servers and A2A tools from a 500+ item index via a single meta-router connection with built-in prompt-injection firewall and 85% token compression","exampleAgentPrompt":"Search the MCP and A2A tool index for capabilities related to 'SEC filings' and return the top 10 results so I can pick the best server to route that task through.","exampleUseCases":[{"title":"Discovering tools for on-chain risk analysis","prompt":"Search the MCP tool index for anything related to 'on-chain risk' or blockchain security — I need to find an agent-callable server that can assess smart contract exposure, show me up to 20 results."},{"title":"Finding a GitHub security audit tool","prompt":"Can you look up available A2A or MCP tools in the discovery index that handle GitHub security auditing or code vulnerability scanning? Return the top 15 so I can compare them."},{"title":"Routing company enrichment capabilities","prompt":"Search the MCP meta-router index for 'company enrichment' or 'B2B lead' tools — I want to find the best endpoint to route my lead-enrichment tasks through, show me up to 25 results."}],"resultDescription":"A paginated list of matching MCP servers and A2A tools from the 500+ item index, including endpoint metadata, capability descriptions, and routing details. Results are token-compressed (85% reduction) and have passed through the Prompt-Guard firewall to filter malicious payloads.","failureModes":["Empty results if query matches no indexed capabilities","Rate limiting or 402 payment required if x402 micropayment not provided","Invalid cursor returns pagination error","Query too short (minLength:1 violated) returns validation error","Upstream MCP server unavailability may reduce index freshness"],"whenToPreferThis":"Choose this endpoint when an agent needs to dynamically discover which MCP server or A2A tool to use for a given capability, rather than hardcoding a specific tool. It is ideal for swarm orchestration, meta-routing across 500+ tools, or when you need a safe-proxied, token-efficient single connection that includes prompt-injection protection across all routed calls.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:35:08.015Z","isFirstParty":false,"canonicalSlug":"onchain-risk-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-0c8aadb4"}