SECOPS

Route GitLab MR security labels to the right reviewer pool

When a merge request gains a security label, this looks up the matching reviewer group and assigns those reviewers to the MR.

CategorySecOps
Enginesim
Difficultybeginner
Triggerwebhook
Steps4
Setup~5 min

How it runs

The automated pipeline, trigger to output.

  • TriggerGitLab MR updated with a security:: labelGitLabGitLab
  • LogicMap label to reviewer pool
  • ActionAssign pool reviewers and add needs-secreview labelGitLabGitLab
  • OutputPost assignment to Slack triage channelSlack

What it does

GitLab merge requests get tagged with labels like `security::crypto`, `security::authz`, or `security::data-handling`, but assigning the right specialist reviewer is usually manual and slow. This workflow watches for security labels and instantly routes the MR to the correct reviewer pool, then announces it in Slack.

When to use it

Use it when your AppSec team owns several distinct review domains and you want labels — not tribal knowledge — to decide who looks at a change. Ideal for teams running a `security::*` scoped label taxonomy in GitLab.

How it works

  1. 1A GitLab webhook fires when an MR is updated and a `security::*` label is present.
  2. 2A logic step maps the specific label to a reviewer pool (a lookup table of label to GitLab usernames).
  3. 3An action assigns those reviewers to the MR via the GitLab API and adds a `needs-secreview` label.
  4. 4A Slack message posts the MR title, author, label, and assigned pool to the security triage channel.

Set it up

What you configure once, before turning it on.

  1. 1
    Connect GitLabRepos, MRs, pipelines, registry.
  2. 2
    Connect SlackChannels, DMs, threads, mentions.
  3. 3
    Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
  4. 4
    Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
  5. 5
    Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.

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