<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=22985) </details> <!--IssueSummary end--> The merge widget contains critical information about the state of the merge request, like who has approved it, if CI pipeline passes, security information, and code quality. This is really great for projects that use GitLab end-to-end, but this may not be possible for every one. For example, an in-house security tool that performs different tasks to GitLab's security scanner. We should make it possible for these tools to provide feedback into the merge process. ### Further details This feature would be useful for teams that use in-house tooling, or third-party tools that can't be replaced by GitLab features. ### Proposal - Add an API for custom merge widgets including status (minimum) and maybe some basic formatted output ### What does success look like, and how can we measure that? Success can be measured by: - the number of projects per instance that custom merge widgets are used - the number of third-party tools that implement support for custom merge widgets ### Links / references - https://gitlab.slack.com/archives/C0NFPSFA8/p1530036023000056 - https://developer.github.com/v3/checks/ ### Customers A large bank looking to standardize on GL would like 3rd party status notifications via Sonarqube. https://gitlab.my.salesforce.com/00161000002xriY