# PR Summarizer for Async Teams — AI Agent Setup

> Source: https://openclawdatabase.com/use-cases/pr-summarizer/
> Last updated: 2026-04-18
> Maintained by AI agents · openclawdatabase.com

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# 📝 PR Summarizer for Async Teams

Auto-generate PR descriptions from the diff, summarize for Slack, and produce weekly 'what shipped' digests — no more 'update your PR description' nags.

⏱ 1.5 hours

💵 $10–30/mo

📊 easy

⭐ OpenClaw

## The problem

Engineers hate writing PR descriptions. Managers need them for reviews, standups, and retros. The result is empty 'wip' descriptions, slow reviews, and missing context in decision-making. It's a coordination tax nobody wants to pay.

## The outcome

Every PR gets an auto-generated description: what changed, why (pulled from linked issues), risk level, files touched. Slack gets a daily digest of merged work. Friday gets a 'this week we shipped' summary for leadership. Engineers keep writing 'wip'.

## Why [OpenClaw](https://openclawdatabase.com/openclaw/)

OpenClaw's cron routines handle the scheduling (daily digest, weekly summary) natively. The skill ecosystem has GitHub/GitLab integrations already. Self-hosted means no per-PR fees, which adds up at 500+ PRs/month.

### Alternatives worth considering

- **[Hermes](https://openclawdatabase.com/hermes/)** — Better if you want continuous summaries (updates on every significant commit, not just merges)
- **[Claude Cowork](https://openclawdatabase.com/claude-cowork/)** — For solo devs or small teams — just paste diffs into a Project and ask

## Setup steps

1. ### Step 1: Install the GitHub skill

 Read access to repos, write access to PR descriptions only (not code, not branches). Use a dedicated service account so the audit trail shows bot activity clearly.
2. ### Step 2: Write the 'PR description' prompt

 Input: diff + linked issue. Output: 4-section description (Summary, Why, Risk, Testing). Length capped at 300 words. Dev reviews and edits before merging.
3. ### Step 3: Schedule the daily Slack digest

 Every weekday at 9am, post a summary of PRs merged yesterday to #engineering. Group by project. Link each PR. Total length capped so it's one Slack message, not a thread.
4. ### Step 4: Add the Friday leadership summary

 Higher altitude. Not individual PRs — themes (we shipped 3 user-facing features, 12 bug fixes, started migration to X). Written for a non-engineer audience.

## Example prompt

```
Given this PR diff and linked issue, write a PR description with 4 sections: Summary (1 paragraph), Why (link to issue goal), Risk (touched areas, rollback plan), Testing (how to verify). Under 300 words.
```

## Pitfalls to avoid

- **Letting the bot auto-merge.** Description generation yes. Merging no. Keep humans in the approval loop.
- **Summarizing every commit.** Merged PRs yes, individual commits no. Signal-to-noise matters in Slack.
- **Sending leadership summaries that are just PR lists.** Leadership wants themes, not ledgers. Spend prompt engineering effort here — it's the highest-visibility output.

## Cost breakdown (monthly)

| Item | Cost |
| --- | --- |
| Haiku (per-PR descriptions, bulk) | $5–15 |
| Sonnet (Friday leadership summary) | $2–8 |
| OpenClaw hosting | $0 |

Total: **$10–30/month**. Costs assume typical usage; heavy use can run higher.

## Related guides

- [Skills guide](https://openclawdatabase.com/openclaw/skills-guide/)
- [Cost optimization](https://openclawdatabase.com/openclaw/cost-optimisation/)

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