{"uid":"cap_qT0Ih545MiSfDebohUXs9","slug":"delx-commerce-seeded-tie-break-90981666","name":"Delx Commerce Seeded Tie-Break","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/seeded-tie-break?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"seed":{"type":"string","maxLength":8192,"description":"Seed supplied to Seeded Tie Break; 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 Tie Break; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"index":1,"selected":"agent-b"},"schema":"delx/util-seeded-tie-break/v1","status":"pass","evidence":{"retained":false,"input_sha256":"2af40d10ca5c00077ce59778ecab5e4435550298c2af584fa9395592d9a9208c","external_calls":0},"operation":"seeded_decision:seeded_tie_break"}},"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_YylGUL72NkadiqNBv6hGC","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 selects one candidate from a list using a seed string, producing a verifiable, reproducible tie-breaking decision with no data retention.","exampleAgentPrompt":"Break the tie between 'agent-a', 'agent-b', and 'agent-c' using the seed 'round-3-2024' — I need a reproducible, verifiable pick with no data stored.","exampleUseCases":[{"title":"Agent fleet task assignment","prompt":"We have three agents — 'worker-1', 'worker-2', 'worker-3' — all equally eligible for a job. Use the seed 'job-batch-42' to pick one deterministically so we get the same answer every time we check."},{"title":"Tournament bracket tie resolution","prompt":"Two players tied in our leaderboard: 'alice' and 'bob'. Use the seed 'semifinal-round-2' to pick the one who advances — I need the result to be reproducible and auditable."},{"title":"Randomized A/B variant selection","prompt":"Pick one of these three content variants — 'variant-control', 'variant-blue', 'variant-green' — using seed 'user-session-8821' so the same user always gets the same variant and I can verify the selection later."}],"resultDescription":"Returns a JSON object with the selected candidate string and its index in the input array, plus an evidence block containing the input SHA-256 hash, a flag confirming no data was retained, and an external-calls count of zero — enabling full auditability of the decision.","failureModes":["Missing or empty candidates array returns a validation error","Seed string exceeding 8192 characters is rejected","Candidates array exceeding 256 items is rejected","Malformed JSON body returns a 400-level error","Payment not included or insufficient USDC results in a 402 response"],"whenToPreferThis":"Choose this endpoint when you need a deterministic, reproducible, and auditable tie-breaking decision with a verifiable seed — particularly in multi-agent systems where the same seed must always yield the same winner, or when auditability and no-retention guarantees are required. Prefer it over pure random selection when you need reproducibility, and over self-implemented hash logic when you need an external, pay-per-result verifiable record.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:54:09.748Z","isFirstParty":false,"canonicalSlug":"delx-commerce-seeded-tie-break-90981666"}