{"uid":"cap_BdJwo3RJWUbzrvO9vsA5Z","slug":"400860-data-api-mcp-tool-call-4d9727bf","name":"400860 Data API – MCP Tool Call","description":"x402-native paid API tools for DeFi yields, protocol TVL, AI pricing, paid MCP calls, and web scraping.","url":"https://api.400860.xyz/v1/mcp/call","method":"POST","headers":{},"bodySchema":{"type":"object","required":["tool"],"properties":{"tool":{"enum":["get_defi_yields","get_defi_tvl","get_ai_pricing"],"type":"string"},"params":{"type":"object"}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_VAohz3jpKaasgbWQUwOZS","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Executes a named tool via MCP call to retrieve DeFi yields, protocol TVL, AI model pricing, or scraped web data, paid per-call via x402 micropayments.","exampleAgentPrompt":"Call the 400860 Data API with the 'defi_yields' tool and no extra params to fetch current DeFi stablecoin yield opportunities — I want to see what's available across protocols right now.","exampleUseCases":[{"title":"Compare DeFi yield opportunities","prompt":"Use the 400860 Data API to call the defi_yields tool and show me which stablecoin pools have the highest APY right now across major DeFi protocols."},{"title":"Check protocol TVL for research","prompt":"Fetch the current total value locked for Aave and Uniswap using the 400860 Data API's protocol_tvl tool — I'm building a DeFi market overview report."},{"title":"Look up AI model pricing","prompt":"I need to compare API pricing for GPT-4o, Claude 3.5, and Gemini Pro — can you call the 400860 Data API with the ai_pricing tool and pull that for me?"}],"resultDescription":"Returns a JSON object with the tool's output — e.g. a list of DeFi yield opportunities with APY and protocol details, TVL figures for one or more protocols, AI model cost-per-token comparisons, or scraped webpage content. Response structure varies by tool called.","failureModes":["Invalid or unknown tool name returns an error object","Missing required params for a specific tool causes a tool-level error","Payment failure (x402) if USDC balance is insufficient — call is not executed","Tool timeout if upstream data source is unavailable","Malformed params object causes a validation error"],"whenToPreferThis":"Choose this endpoint when you need micropayment-gated, agent-friendly access to DeFi yield data, protocol TVL, AI model pricing, or web scraping in a single MCP-style call. It is ideal for AI agents operating in Web3 contexts that already support x402 payment flows, and where per-call USDC pricing is preferable to subscription-based data APIs. Prefer alternatives if you need free data, traditional REST APIs without payment headers, or deeply historical on-chain data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T11:28:28.336Z","isFirstParty":false}