How to set up AI code review on GitLab - Fossa

Fossa integrates with GitLab via OAuth and webhooks. Once configured, merge requests are reviewed automatically.

Steps

Create an account at fossa.local or self-host Fossa
Connect GitLab — authorize via OAuth during setup
Configure webhooks — follow the guided setup to enable merge request events
Select projects — choose which GitLab projects Fossa should review
Open a merge request — Fossa reviews it automatically

What you get

Automated reviews on every MR
Comments posted directly in the merge request
Customizable rules and suggestion controls
Business logic validation against linked tasks

Custom configuration

Drop a fossa-config.yml in your repo root to customize behavior per project. For the full setup guide, see GitLab OAuth and GitLab Webhooks.