{"uid":"cap_gXf0RharTBDqnkkqAh0aD","slug":"provably-fair-round-commit-hash-dc1bd411","name":"Provably-Fair Round Commit Hash","description":"Provably-fair round commit: sha256(server_seed) before any draw. ?round=<id>","url":"https://pyfile-agent.taile3ff35.ts.net/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_R9IdCD1eMhVMGqaPiMVYG","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 for a given round before any draw occurs, enabling provably-fair verification of random selection.","exampleAgentPrompt":"Before we run the draw for round 7, can you fetch the provably-fair commit hash for that round so participants can verify the server seed was locked in ahead of time?","exampleUseCases":[{"title":"Pre-draw fairness verification","prompt":"Fetch the SHA-256 commit hash for round 12 before we select a winner — I need to share it with participants so they can confirm the server seed was committed before the draw happened."},{"title":"Lottery audit trail","prompt":"We ran a giveaway in round 5 and someone is questioning the fairness — can you get me the server seed commit hash for round 5 so I can prove it was set before the selection?"},{"title":"Multi-round integrity check","prompt":"I'm building a transparency log — can you pull the commit hash for round 99 so I can record the pre-draw commitment and later verify it matches the revealed server seed?"}],"resultDescription":"Returns the SHA-256 hash of the server seed that was committed before the specified round's draw, allowing participants to later verify that the seed was not altered after commitments were made.","failureModes":["Missing or invalid round parameter returns an error or empty response","Round ID that does not exist returns a not-found error","Service unavailable returns a non-200 HTTP status","Malformed round parameter (non-integer) may return a validation error"],"whenToPreferThis":"Use this endpoint when you need to retrieve a cryptographic pre-commitment (SHA-256 of the server seed) for a specific round before or after a provably-fair draw occurs. It is the companion endpoint to the actual winner-selection endpoint on the same host — call this first to record the commit, then call the draw endpoint, then verify the revealed seed matches the commit.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:09:15.905Z","isFirstParty":false}