{"uid":"cap_mnpNP2FJVTUbc5YKiiLJ_","slug":"gov-halowerk-com-snapshot-verify-01898eb7","name":"gov.halowerk.com Snapshot Verify","description":"Sorts unique scalar key/value entries through canonical JSON serialization and computes SHA-256. It verifies byte-level agreement with an optional claimed digest only; it does not prove block inclusion, timestamp, signer identity, or chain consensus.","url":"https://gov.halowerk.com/v1/snapshot-verify","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"entries":{"type":"array","items":{"type":"object","required":["key","value"],"properties":{"key":{"type":"string","maxLength":256,"minLength":1},"value":{"type":["string","number","boolean","null"]}},"additionalProperties":false},"maxItems":50000,"minItems":1},"claimed_sha256":{"type":"string","pattern":"^[0-9a-fA-F]{64}$"}}},"responseSchema":null,"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_EUNJsm0DDi51TVR_rUE6A","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":"Sorts unique scalar key/value entries, computes a canonical SHA-256 digest, and optionally verifies it against a claimed hash","exampleAgentPrompt":"Can you hash these governance snapshot entries — proposalId: 'p-42', status: 'approved', voteCount: 318 — and check whether the result matches the digest a8f3c2d1e9b054...abcd1234 that I have on file?","exampleUseCases":[{"title":"Governance proposal audit trail","prompt":"I have 500 governance key/value entries from our DAO's last snapshot and a claimed SHA-256 digest of '3f2a9c...'. Can you verify that the entries I'm providing match that digest exactly?"},{"title":"Tamper detection for off-chain data","prompt":"Before I accept this off-chain dataset of voter registration records, I want to make sure nothing was altered — can you compute a canonical SHA-256 over these entries and tell me the hash so I can compare it later?"},{"title":"Cross-party data agreement check","prompt":"Both our team and the auditor have a copy of the same 200 config entries. Can you hash our version and check if it matches the digest '7bde44f...a1209c' that the auditor sent us?"}],"resultDescription":"Returns the computed SHA-256 hex digest of the canonically sorted and serialized key/value entries. If a claimed_sha256 was provided, also returns a boolean indicating whether the computed digest matches the claimed one byte-for-byte. Does not attest to blockchain inclusion, timestamps, signer identity, or chain consensus.","failureModes":["Duplicate keys in the entries array may cause ambiguous sorting or rejection","entries array is empty (minItems: 1 violated) — returns validation error","claimed_sha256 does not match the 64-character hex pattern — returns schema validation error","entries array exceeds 50,000 items — rejected by schema","key or value types outside the allowed scalar types (string, number, boolean, null) — rejected","Payment failure via x402 protocol — endpoint returns 402 and does not process"],"whenToPreferThis":"Choose this endpoint when you need a deterministic, canonical SHA-256 fingerprint of a flat key/value dataset and optionally want to verify it against a claimed digest. It is ideal for audit trails, tamper detection, and cross-party data agreement checks on scalar governance or configuration data. It does NOT provide blockchain proof, timestamp attestation, or signer verification — if those are required, use a dedicated notarization or on-chain anchoring service instead.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:41:43.924Z","isFirstParty":false}