{"uid":"cap_nCieaxKYQ7HKXPFnEMxcy","slug":"onchain-risk-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-52707ca9","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/web-rag-shield-dag)","url":"https://onchain-risk.agentdiet.dev/v1/web-rag-shield-dag?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_JFQhOjEDu6Ajqw4Q4Yfvm","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 a meta-index of 500+ MCP servers and A2A tools by capability query, returning matching endpoints with token-compressed results and Prompt-Guard firewall protection.","exampleAgentPrompt":"Search for available MCP servers or A2A tools that handle 'context compression' — I want to find the best matching endpoints I can connect to for that capability.","exampleUseCases":[{"title":"Discovering tools for SEC filing analysis","prompt":"Search the MCP tool index for any servers or A2A agents that handle SEC filings or EDGAR financial data — I need to find something I can route my finance agent through."},{"title":"Finding a prompt firewall or security tool","prompt":"Can you look up what MCP tools are available for prompt injection protection or Prompt-Guard style firewall capabilities? I want to add a safety layer to my agent swarm."},{"title":"Verifying an endpoint URL for MCP compliance","prompt":"Check whether this URL is a valid, live MCP or A2A endpoint: https://onchain-risk.agentdiet.dev/v1/web-rag-shield-dag — I want to know if it's compliant before I route traffic through it."}],"resultDescription":"Returns a token-compressed list of matching MCP servers and A2A tool endpoints relevant to the query, including capability descriptions, endpoint URLs, and compliance/metadata signals. Results pass through a Prompt-Guard firewall to screen for malicious content.","failureModes":["Empty query string returns validation error","Query matches zero indexed tools — returns empty result set","Queried URL is unreachable or not an MCP/A2A endpoint — returns non-compliant status","Rate limiting or payment failure (x402) blocks the request","Firewall flags query as potentially adversarial and blocks response"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover which MCP servers or A2A tools support a given capability, rather than hardcoding a specific tool. Ideal for swarm orchestrators, meta-agents, or tool registries that need to route tasks to the best available sub-agent. Prefer this over manual tool registries when you need broad coverage across 500+ indexed servers with built-in safety filtering.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:06.913Z","isFirstParty":false,"canonicalSlug":"onchain-risk-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-0c8aadb4"}