> ## 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.

# Approve an approval request

> Approve a pending approval request as the authenticated API user. The caller signs the request's signable data with the private key of a registered approval API key and submits the base64url-encoded signature, optionally with the key ID. The server verifies the signature against the registered public key — using the given key ID, or matching against all of the user's registered keys when the key ID is omitted — and advances the approval quorum.

Endpoint Permission: Owner, Admin, Non-Signing Admin, Approver, Signer, Security Admin.



## API Specification

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