> ## Documentation Index
> Fetch the complete documentation index at: https://developers.fireblocks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Update connected account credentials

> Replace the API credentials (secret + API key) of a connected account.

Credentials belong to an API key, which can back a single account or an entire hierarchy.
Updating them affects all accounts sharing that key, so the endpoint returns an array of modified accounts.

The `creds` field must be a Base64-encoded RSA-encrypted credential blob; use
`GET /connected_accounts/credentials/public_key` to retrieve the public key for encryption.
Both `creds` and `apiKey` are mandatory.

Validation against the exchange is synchronous, but the update itself is **pending mobile
approval** — the existing credentials stay live until the change is approved, so none of the
affected accounts are disconnected in the meantime.

Endpoint Permission: Admin, Non-Signing Admin.

**Note:** This endpoint is currently in beta and might be subject to changes.




## API Specification

The full API specification for this endpoint is available in the [documentation index](https://developers.fireblocks.com/llms.txt).