{"uid":"cap_Vv_YgbcTGgz-Jq0OXHEZN","slug":"delx-commerce-fibonacci-calculator-58f4cb34","name":"Delx Commerce Fibonacci Calculator","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/fibonacci?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"n":{"type":"integer","description":"Integer input (see tool summary for allowed range)."}}},"responseSchema":{"type":"json","example":{"n":42,"value":267914296,"schema":"delx/fibonacci/v1"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ECIKDxifbLaw0hK41ejWd","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the nth Fibonacci number for a given integer input, paid per-result via USDC microtransaction on Base or Solana.","exampleAgentPrompt":"Can you calculate the Fibonacci number at position 42 for me?","exampleUseCases":[{"title":"Fibonacci value for algorithm testing","prompt":"What is the Fibonacci number at index 50? I need the exact value to verify my algorithm output."},{"title":"Educational math sequence demo","prompt":"Can you look up the Fibonacci number for position 10 so I can show a student what the sequence looks like at that point?"},{"title":"Spot-check large Fibonacci index","prompt":"I need the Fibonacci value for n equals 75 — give me the exact number."}],"resultDescription":"Returns a JSON object containing the input index n, the corresponding Fibonacci value, and a schema identifier string (e.g. 'delx/fibonacci/v1') confirming the result format and provenance.","failureModes":["Integer n out of allowed range — API returns error indicating valid range bounds","Missing or malformed n field — returns validation error","Payment failure or insufficient USDC balance — x402 payment not completed, request rejected","Network or service unavailability — standard HTTP 5xx error"],"whenToPreferThis":"Choose this endpoint when an AI agent needs a verifiable, pay-per-result Fibonacci computation without requiring API keys or signup, especially when operating in a crypto-native or x402-compatible payment environment on Base or Solana. Prefer it over rolling a custom implementation when auditability and verifiable delivery of the result matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:53:46.558Z","isFirstParty":false,"canonicalSlug":"delx-commerce-fibonacci-calculator-58f4cb34"}