{"uid":"cap_pT6vlt5fSqAEVlkOPhMpT","slug":"kihustle-permutation-counter-80908a6d","name":"KiHustle Permutation Counter","description":"Kostenlose Guides, Solo-Playbooks und Artikel zu KI, Automation und Side Hustles — für Menschen, die mit echten Systemen online Einkommen aufbauen wollen. Transparent finanziert über faire Affiliate-Links.","url":"https://kihustle.tech/nexus/api/v1/permutation-counter?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"n":{"type":"integer"},"r":{"type":"integer"}}},"responseSchema":{"type":"json","example":{"result":"processed","status":"success"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7yYWUoelj86RcbGzF9fbZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the number of permutations P(n, r) — the count of ordered arrangements of r items chosen from a set of n items","exampleAgentPrompt":"Calculate the number of permutations when choosing 3 items from a set of 10 — so n is 10 and r is 3.","exampleUseCases":[{"title":"Contest bracket arrangement count","prompt":"How many different ways can the top 3 finishers be arranged in a competition with 8 contestants? Give me the exact permutation count with n=8 and r=3."},{"title":"Password character sequence possibilities","prompt":"If I have an alphabet of 26 characters and I want to know how many distinct ordered 5-character sequences are possible, calculate the permutations where n is 26 and r is 5."},{"title":"Race podium ordering calculator","prompt":"There are 12 runners in a race. How many different ways can 1st, 2nd, and 3rd place be filled? Use n=12 and r=3 to compute the permutation count."}],"resultDescription":"Returns a JSON object with a 'result' field containing the computed permutation value P(n,r) and a 'status' field confirming success. The result represents the total number of ordered arrangements of r items selected from a pool of n items.","failureModes":["Invalid or missing n or r parameters — endpoint may return an error or unexpected result","r greater than n — mathematically undefined permutation, likely returns an error","Non-integer values for n or r — schema expects integers, non-integers may fail validation","Negative integers — undefined for standard permutation formula, may cause computation error","Very large n or r values — may cause integer overflow or timeout"],"whenToPreferThis":"Choose this endpoint when you need a fast, cheap, paid API call to compute ordered permutation counts P(n,r) without implementing the factorial math yourself. Ideal for agents handling combinatorics, probability setup, puzzle solving, or contest logic that requires exact permutation values on demand.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:56:39.536Z","isFirstParty":false,"canonicalSlug":"kihustle-permutation-counter-80908a6d"}