{"uid":"cap_P1yBVgj_dudDg7X9lMb-c","slug":"defi-yield-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-32c4b8d6","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://defi-yield.agentdiet.dev/v1/agent-tool-marketplace)","url":"https://defi-yield.agentdiet.dev/v1/agent-tool-marketplace?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_-QEcspbLd1D1GLJIHvwoh","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"defi-yield.agentdiet.dev","brandSlug":"defi-yield-agentdiet-dev-mpp","brandBaseUrl":"https://defi-yield.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-injection firewall protection.","exampleAgentPrompt":"Search the agent tool marketplace for MCP servers or A2A tools that can handle 'SEC filings' and show me the best matches — I want to find a ready-to-use capability for pulling company financial disclosures.","exampleUseCases":[{"title":"Discovering tools for on-chain risk analysis","prompt":"Search the MCP tool marketplace for anything that can do on-chain smart contract risk or DeFi token security analysis — I need to find an agent-callable tool for auditing crypto contracts."},{"title":"Finding a prompt injection firewall tool","prompt":"Look up agent tools in the marketplace that handle prompt injection detection or jailbreak firewall capabilities — I want to plug one into my agent pipeline to screen untrusted inputs."},{"title":"Locating a company enrichment MCP server","prompt":"Search the tool index for MCP servers that do B2B company enrichment or lead data lookup — I need one my agent can call to fill in firmographic details from a domain name."}],"resultDescription":"Returns a token-compressed list of matching MCP servers and A2A tools from an index of 500+ entries, including endpoint URLs, capability descriptions, and metadata, filtered through a Prompt-Guard firewall to prevent injection attacks in tool responses.","failureModes":["Empty query string returns validation error","No matching tools found for obscure or misspelled capability terms","Rate limiting or payment failure if x402 payment is not correctly handled","Firewall may block or filter results containing suspected prompt injection content","Malformed endpoint URL input may return no verification results"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover new tools or MCP servers at runtime rather than using a hardcoded list; particularly useful when building swarm agents that need to self-expand their capabilities, or when you want a single connection point with built-in token compression and prompt-injection safety for routing to external tools.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:46:29.632Z","isFirstParty":false,"canonicalSlug":"defi-yield-agentdiet-dev-universal-a2a-mcp-tool-discovery-safe-proxy-b31cc8b3"}