DEVOPS
Flag-Age Gate on Pull Request Merge
On every PR that touches flag-guarded code, it checks how old each referenced flag is and warns when a PR builds on a flag that is already overdue for removal.
How it runs
The automated pipeline, trigger to output.
- TriggerPR opened or updated webhookGitHub
- ActionExtract flag keys from PR diffGitHub
- ActionLook up flag age and rollout statePostgres
- LogicSelect flags past expiry SLA
- ActionPost inline PR review commentGitHub
- OutputPing PR author in SlackSlack
What it does
Whenever a pull request modifies code wrapped in a feature flag, it looks up each referenced flag's creation date and rollout state, and warns when developers are extending code that depends on a flag already past its expiry SLA.
When to use it
Use it as a guardrail in active repos where engineers keep adding logic behind flags that should have been retired, quietly compounding the cleanup backlog.
How it works
- 1A GitHub pull-request webhook fires when a PR is opened or updated.
- 2It diffs the PR to extract every feature-flag key the changed lines reference.
- 3It queries Postgres for each flag's age and current rollout status.
- 4A filter selects flags older than the expiry SLA or already at 100%.
- 5If any stale flag is found, it posts an inline review comment naming the offending flags and their age.
- 6It also pings the PR author in Slack so the warning is not missed.
Set it up
What you configure once, before turning it on.
- 1Connect GitHubRepos, issues, pull requests, actions.
- 2Connect PostgresAny Postgres URL — query, write, migrate.
- 3Connect SlackChannels, DMs, threads, mentions.
- 4Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 5Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 6Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
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