{"uid":"cap__y0UlDsYT5519FEZuJsf9","slug":"delx-seeded-winners-without-replacement-04e9b4cb","name":"Delx Seeded Winners Without Replacement","description":"Seeded Winners Without Replacement: Seeded Winners Without Replacement draws an ordered reproducible winner list without replacement from bounded caller-supplied values without an external provider. Call Seeded Winners Without Replacement when an agent needs a reproducible decision that another run can independently replay. Returns the deterministic selection plus seed provenance, population bounds, and the operation-specific outcome for Seeded Winners Without Replacement as versioned determini…","url":"https://api.delx.ai/api/v1/x402/seeded-winners-without-replacement","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"seed":{"type":"string","maxLength":8192,"description":"Seed supplied to Seeded Winners Without Replacement; used only for this bounded calculation and processed in memory without retention."},"candidates":{"type":"array","items":{"type":"string","maxLength":8192},"maxItems":256,"description":"Candidates supplied to Seeded Winners Without Replacement; used only for this bounded calculation and processed in memory without retention."},"winner_count":{"type":"integer","description":"Winner Count supplied to Seeded Winners Without Replacement; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"count":3,"winners":["d","c","b"],"monetary_claim":false},"schema":"delx/util-seeded-winners-without-replacement/v1","status":"pass","evidence":{"retained":false,"input_sha256":"7854633a204eec63fedb89d8b9c7942b2651237bdee78ebb4e3b8378e7a3d424","external_calls":0},"operation":"seeded_decision:seeded_winners_without_replacement"}},"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_6n9mNSyu8p1V4i9cg1VR6","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":"Deterministically select a fixed number of winners from a candidate list using a seed, ensuring no duplicate selections and reproducible results.","exampleAgentPrompt":"Pick 3 winners without replacement from this list — ['alice','bob','carol','david','eve'] — using the seed 'contest-2024-june' so the draw is reproducible and auditable.","exampleUseCases":[{"title":"Reproducible raffle winner selection","prompt":"Run a raffle for our newsletter giveaway — pick 2 winners from ['user_101','user_202','user_303','user_404','user_505'] using seed 'newsletter-july-2025' so I can verify the results later."},{"title":"A/B test group assignment","prompt":"I need to deterministically assign 5 participants to a test group from this list of 20 user IDs using seed 'experiment-v3-batch1' — can you pick them without replacement?"},{"title":"Random task allocation without repeats","prompt":"From this list of 8 available agents ['agent-a','agent-b','agent-c','agent-d','agent-e','agent-f','agent-g','agent-h'], pick 3 to handle today's jobs using seed 'daily-dispatch-20250610' so the assignment is auditable."}],"resultDescription":"Returns a JSON object containing the list of selected winners (no duplicates), the count of winners selected, a boolean indicating no monetary claim, the input SHA-256 hash for auditability, confirmation that inputs were not retained, and the number of external calls made (zero).","failureModes":["winner_count exceeds number of candidates — cannot select more winners than candidates without replacement","invalid or missing seed causes unpredictable or rejected computation","candidates array exceeds 256 items limit","empty candidates array with non-zero winner_count","malformed input types (e.g. non-integer winner_count)"],"whenToPreferThis":"Use this endpoint when you need a deterministic, auditable, and reproducible random selection from a candidate list with no repeated picks — especially for lotteries, raffles, A/B assignments, or any governed draw where the same seed must always produce the same winners. Prefer it over stateful or non-deterministic random services when verifiability and zero data retention matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:05:12.164Z","isFirstParty":false}