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DiffPal
Open-source AI pull request review that runs in your CI
DiffPal is an open-source AI reviewer for pull requests. Bring Codex, Copilot, OpenCode, or any ACP-compatible agent; run reviews in your CI and publish consistent summaries, inline findings, artifacts, and merge gates across GitHub, GitLab, and Azure DevOps.
I built DiffPal around a simple idea: if you already have coding agents, you should not have to pay for another per-seat code review SaaS.
DiffPal is the reviewer. Codex, Copilot, OpenCode, or any ACP-compatible agent can serve as its review backend. DiffPal provides the stable review workflow around that backend.
You stay in control: review configuration and instructions live with the code in Git.
What DiffPal does:
- Scopes the pull request or merge request diff.
- Publishes inline comments and a review summary.
- Produces structured JSON findings and SARIF artifacts.
- Supports configurable merge gates.
- Integrates with GitHub, GitLab, and Azure DevOps.
- Provides a ready-to-use GitHub Action, Azure Pipelines task, and GitLab CI integration.
You can also cross-review: code written with one agent can be reviewed by DiffPal using a different agent as its backend.
There is no mandatory DiffPal cloud or subscription. DiffPal is open source under the MIT License. And yes, DiffPal reviews its own pull requests.
Website: https://diffpal.github.io
Your chosen agent or provider and CI may have their own costs.
Which agent and CI would you use DiffPal with, and what would stop you from trying it on a real pull request?
About DiffPal on Product Hunt
“Open-source AI pull request review that runs in your CI”
DiffPal was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #39 on the daily leaderboard. DiffPal is an open-source AI reviewer for pull requests. Bring Codex, Copilot, OpenCode, or any ACP-compatible agent; run reviews in your CI and publish consistent summaries, inline findings, artifacts, and merge gates across GitHub, GitLab, and Azure DevOps.
On the analytics side, DiffPal competes within Open Source, Developer Tools, Artificial Intelligence and GitHub — topics that collectively have 1.1M followers on Product Hunt. The dashboard above tracks how DiffPal performed against the three products that launched closest to it on the same day.
Who hunted DiffPal?
DiffPal was hunted by Alexey Samoylov. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of DiffPal including community comment highlights and product details, visit the product overview.
Alexey Samoylov