{"uid":"cap_KZu5w3LLyRYmwSyjz1NUI","slug":"provably-fair-round-commit-hash-lookup-dfb214a9","name":"Provably-Fair Round Commit Hash Lookup","description":"Provably-fair round commit: sha256(server_seed) before any draw. ?round=<id>","url":"https://pyfile-agent.taile3ff35.ts.net:10000/data/fair/commit","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}}},"output":{"type":"object"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1-tgw0LJQN3PtbEh8-s9n","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the SHA-256 hash of the server seed committed before a draw for a given round, enabling provable fairness verification","exampleAgentPrompt":"Can you fetch the provably-fair server seed commitment hash for round 101 so I can verify the draw wasn't manipulated?","exampleUseCases":[{"title":"Audit a lottery draw outcome","prompt":"I need to verify that round 57 of this lottery was fair — can you get me the SHA-256 server seed commit hash that was recorded before the draw happened?"},{"title":"Pre-reveal fairness check","prompt":"Before they reveal the server seed for round 200, grab the committed hash so I can confirm it matches after the reveal and nothing was changed."},{"title":"Automated game integrity monitoring","prompt":"For each new round that completes, fetch the pre-draw commit hash and store it so we can cross-check it against the revealed server seed later."}],"resultDescription":"Returns the SHA-256 hash of the server seed that was committed before the draw for the specified round ID, allowing anyone to verify post-reveal that the server seed matches the pre-committed hash and the outcome was not manipulated.","failureModes":["Round ID not found or not yet committed — returns an error or empty response","Missing or invalid round query parameter — may return a bad request error","Round ID is in the future and no commit exists yet — returns not found","Service unavailable or network timeout on the Tailscale node"],"whenToPreferThis":"Use this endpoint when you need to cryptographically verify the fairness of a specific random draw round by retrieving its pre-committed server seed hash. Ideal for auditing lottery, raffle, or gaming outcomes where provable fairness via commit-reveal schemes is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T06:56:28.841Z","isFirstParty":false}