> For the complete documentation index, see [llms.txt](https://newdocs.keeper.io/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://newdocs.keeper.io/en/release-notes/enterprise/keeper-secrets-manager/2026/javascript-sdk-17.5.0.md).

# JavaScript SDK 17.5.0

* **KSM-901:** Added custom server public key support for isolated deployments. Supply the key in any of three ways: the `serverPublicKey` / `serverPublicKeyId` options on `SecretManagerOptions` (the options object passed to `getSecrets`), the matching `serverPublicKey` / `serverPublicKeyId` config fields, or an extended one-time token in the 4-segment format. When a custom key is configured, server-side key rotation hints are suppressed so the SDK stays pinned to the configured key.
* **KSM-880:** Added automatic throttle retry with exponential backoff. HTTP 403 `{"error":"throttled"}` responses are retried up to 5 times (11s, 22s, 44s, 88s, 176s ±25% jitter), honoring `retry_after` when present. A typed `KeeperThrottleError` is thrown once retries are exhausted. No caller changes required.
* **KSM-887:** Added `secureStorage(dbName)` browser storage backend — generates a non-extractable AES-256-GCM `CryptoKey` stored natively in IndexedDB so KSM credentials are never held in extractable form in browser storage.
* **KSM-1010:** Added `KeeperRecordLink` typed accessor class and `getLinks()` function: exposes permission booleans (`isAdminUser`, `allowsRotation`, `allowsConnections`, etc. with `allowedSettings` fallback), data accessors (`getDecodedData`, `getDecryptedData`, `getLinkData`), and settings accessors (`getAiSettingsData`, `getJitSettingsData`, `getMetaData`, `getSettingsForPath`). All accessors are non-throwing. TypeScript port of Python KSM-992.
* **KSM-1025:** Exported `KeeperError` base class from `keeper.ts`. `KeeperThrottleError` now extends `KeeperError` (which extends `Error`); null/undefined config-value guards throw `KeeperError` instead of plain `Error`. Existing `instanceof Error` handling is unaffected. Migration of remaining throw sites to the typed hierarchy is tracked under the KSM-1024 epic.
* **KSM-1029:** Fixed error propagation for stale pinned server key rejections — the diagnostic message now reaches the caller instead of being swallowed by a bare catch block.
* **KSM-984:** Fixed `webSafe64ToBytes` and `base64ToBytes` (Node and browser) — null/undefined input now throws a typed `KeeperError` naming the affected field instead of a cryptic native `TypeError`. Parity with Python KSM-808 and Java KSM-985.
* **KSM-758:** Replaced deprecated `rollup-plugin-sourcemaps@0.6.3` with `rollup-plugin-sourcemaps2@0.5.6`, resolving peer dependency warnings with Rollup 4.x and a transitive `picomatch` HIGH vulnerability (dev dependency only; no production impact).
* **Security:** Bumped `rollup` dev dependency to `^4.60.1` — fixes HIGH-severity arbitrary file write via path traversal affecting 4.0.0–4.58.0 (dev dependency only; no impact on SDK consumers).

**Links:**

* [npm package](https://www.npmjs.com/package/@keeper-security/secrets-manager-core/v/17.5.0)
* See [JavaScript/TypeScript SDK Documentation](/en/keeperpam/secrets-manager/developer-sdk-library/javascript-sdk.md)


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