{"uid":"cap_SX9UNOZ5ne6QD-r5uCJ-o","slug":"onchain-risk-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-68a3c7ad","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/tool-search)","url":"https://onchain-risk.agentdiet.dev/v1/tool-search?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_G1piEa2CUMGkEezc0WZys","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 an index of 500+ MCP servers and A2A tools by capability query, returning matching endpoints with token-compressed metadata and prompt-injection firewall protection.","exampleAgentPrompt":"Search the MCP tool index for any servers that can handle SEC filings retrieval — I need to find the best available endpoint for that capability.","exampleUseCases":[{"title":"Finding a GitHub audit tool","prompt":"Search the MCP tool index for anything that can do GitHub security audits or code scanning — I want to know which servers are available and what they offer."},{"title":"Discovering company enrichment APIs","prompt":"Can you look up which MCP servers or A2A tools support B2B lead enrichment or company data enrichment? I need to find the right one to plug into my agent pipeline."},{"title":"Verifying a specific endpoint is indexed","prompt":"Check whether this endpoint URL is in the MCP tool registry and tell me what capability it's listed for: https://onchain-risk.agentdiet.dev/v1/tool-search"}],"resultDescription":"Returns a list of matching MCP servers or A2A tool endpoints relevant to the capability query, with token-compressed metadata (85% compression claimed) and results filtered through a Prompt-Guard firewall to block prompt-injection risks.","failureModes":["Empty results if query is too vague or capability not indexed","402 Payment Required if x402 payment not attached","Timeout or 503 if the meta-router index is unavailable","No match returned for very niche or novel capability queries","Endpoint URL verification returning false negative if URL is not yet indexed"],"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 a specific tool. It is particularly valuable in swarm orchestration or meta-agent architectures where the right downstream tool is not known in advance. Prefer it over static tool registries when token budget is constrained, since it claims 85% compression. Use it to verify whether a specific endpoint URL is registered and safe before routing traffic to it.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:25:50.515Z","isFirstParty":false,"canonicalSlug":"onchain-risk-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-0c8aadb4"}