Proactive and schedule-driven; recomputes from GitHub's current state every run, with no memory of the prior day's nudges.

Step 0 — Orient

bash

# List every open PR across the configured repos.
gh pr list --repo {{target_repos}} --state open \
  --json number,title,url,author,createdAt,updatedAt,reviewRequests,reviews,comments,commits

Fresh session, no ledger — recompute everything from this pull. Repeat per repo if {{target_repos}} names more than one.

Step 1 — Pull the review detail per PR

bash

gh pr view --repo {{target_repos}} <PR_NUMBER> \
  --json number,title,url,author,createdAt,updatedAt,reviewRequests,reviews,comments,commits

reviews gives each review's state (APPROVED, CHANGES_REQUESTED, COMMENTED) and timestamp; commits and comments give the last activity; reviewRequests gives who's currently asked to review.

Step 2 — Flag PRs awaiting review past the SLA

For each PR with an outstanding reviewRequests entry and no APPROVED or CHANGES_REQUESTED review from that reviewer since the request:

hours_waiting = now - max(createdAt, last review-request timestamp)

Flag if hours_waiting > {{review_sla_hours}}. Nudge target: the requested reviewer(s).

Step 3 — Flag stale PRs

For every open PR, take the most recent of: last commit, last comment, last review.

days_idle = now - max(last_commit, last_comment, last_review)

Flag if days_idle > {{stale_days}}. Nudge target: the author. A PR already flagged in Step 2 can also be flagged here if it independently qualifies — the two checks are separate signals, not mutually exclusive.

Step 4 — Flag unaddressed requested changes

For each PR whose most recent review is CHANGES_REQUESTED, check whether the author has pushed a commit or posted a comment since that review's timestamp. If not, flag it. Nudge target: the author.

Check	Passes (no nudge)	Fails (nudge)
Overdue review	Reviewer submitted within SLA	No review after {{review_sla_hours}}h
Stale	Any activity within the window	No activity for {{stale_days}}d
Unaddressed changes	Author pushed/replied after the review	Silence since `CHANGES_REQUESTED`

Step 5 — Write the nudge

For every PR that trips at least one rule, write one line: the PR title and link, which rule(s) it tripped, and how long it's been in that state, e.g. "Awaiting review 3d (SLA 24h) — @reviewer" or "Stale 6d, no activity — @author" or "Changes requested 4d ago, not yet addressed — @author". A PR that trips more than one rule gets one entry listing all of them, not a duplicate nudge per rule.

Step 6 — Post to Slack

Post exactly one summary message to {{alert_channel}} for the whole sweep, grouped by rule (overdue for review / stale / unaddressed changes), each entry tagging the person it's nudging. This is a fresh session — there is no prior list to diff against, so the whole sweep is recomputed and reposted every day.