{"slug":"basescan-api","name":"BaseScan API","host":"api.basescan.org","site":"https://basescan.org","category":"crypto","docsUrl":null,"sources":[{"kind":"archive","url":"https://kb.etherscan.com/etherscan-api-v1-will-be-fully-deprecated-by-15th-august-2025"}],"url":"https://www.okapi.bot/providers/basescan-api/","json":"https://www.okapi.bot/api/v1/providers/basescan-api.json","breakingChanges":[{"slug":"api-v1-api-stops-working","api":"basescan-api","title":"API V1 (/api) stops working","kind":"version_retirement","outcome":"fails","model":null,"announcedAt":"2025-07-30","effectiveAt":"2025-08-15","scope":null,"calls":["/api"],"method":null,"path":"/api","source":{"url":"https://kb.etherscan.com/etherscan-api-v1-will-be-fully-deprecated-by-15th-august-2025","kind":"archive"},"quote":"API V1 will be fully deprecated by August 15, 2025 . After that, all V1 requests will stop working.","migration":"Call https://api.etherscan.io/v2/api with the same module, action and other query parameters, plus chainid for the chain (an Etherscan API key covers every supported chain).","migrationChange":null,"needsDecision":null,"text":{"summary":"On August 15, 2025, BaseScan API V1 will be fully deprecated and requests will fail. This change affects calls to the /api endpoint. After that day, all V1 requests will stop working.","migration":"Call api.etherscan.io/v2/api with the same module, action, and other query parameters, and include chainid for the target chain. An Etherscan API key covers every supported chain.","by":"writer"},"publishedAt":"2026-10-23T10:26:29.752Z","updatedAt":"2026-10-24T20:33:06.005Z","status":"in_effect","tone":"broken","url":"https://www.okapi.bot/providers/basescan-api/breaking-changes/api-v1-api-stops-working/"}]}