Setup API Co-signer Callback Handler

Overview

The API Co-signer Callback Handler is an optional feature

If a Callback Handler is not configured for an API user, the Co-signer will automatically sign or approve all requests it receives for that API user.

The Fireblocks API Co-signer can connect to a user-hosted web server called the API Co-signer Callback Handler. This handler plays a critical role by receiving signing or approval requests from the Co-signer.

An optional connection to a Callback Handler can be configured for each API user paired with the Co-signer. This enables the application of custom business or security logic before transactions associated with the paired API user are automatically signed or approved.

Implementing the Callback Handler provides several benefits:

• Enhanced control: integrate your specific business rules and security protocols.
• Improved compliance: transactions are vetted to meet internal compliance standards.
• Increased security: the additional validation layer reduces the risk of unauthorized transactions.

This integration ensures secure, compliant and customized transaction management.