Ellipsis
GitHub app that reviews PRs and opens its own bug-fix pull requests
Last reviewed 2026-06-19
Ellipsis is a GitHub and GitLab app that reviews code and fixes bugs on pull requests. When a PR is opened or updated it scans the diffs for logical errors, anti-patterns, style-guide violations, and basic security issues, and posts review comments. Beyond reviewing, it can generate code fixes that are committable directly, and developers can @-mention it (for example '@ellipsis-dev fix this unit test' or 'implement this feature') to have it write code that follows the team's style guide, executing the code internally to test it before proposing changes. Because it can open and update pull requests with working, tested code from a comment or finding, Ellipsis is more agentic than a comment-only reviewer, but a human still reviews and merges its PRs, making it a supervised agent. It is a Y Combinator W24 company founded in 2024 by Nicholas Moy and James Murdza, with a reported $2M seed round.
What it can do
Review pull requests automatically
CopilotOn each PR it scans diffs for logical errors, anti-patterns, style-guide violations, and basic security issues and posts review comments.
sourceGenerate and commit bug fixes
SupervisedWhen it finds an issue it can generate a code fix that is committable directly into the PR, executing the code internally to test it.
sourceImplement changes from a PR comment
SupervisedDevelopers @-mention it ('fix this unit test', 'implement this feature') and it writes style-guide-conforming code as a PR for human review.
sourceEnforce a team style guide
CopilotCatches and corrects violations of a configured team style guide across reviews and generated code.
source
Strengths
- +Goes beyond comments: opens and updates PRs with working, tested fixes
- +Responds to natural-language @-mentions to implement changes
- +Executes generated code internally to validate before proposing it
Limitations
- −Generated PRs still require human review and merge
- −Smaller, younger company than the larger review incumbents
- −GitHub/GitLab only
Overview
Ellipsis is a GitHub/GitLab app that reviews pull requests and can also fix bugs and implement changes by opening its own PRs. It targets teams that want an AI that does review work and the follow-up code, not just comments.
What it does
On each PR, Ellipsis scans diffs for logical errors, anti-patterns, style-guide violations, and basic security issues and posts comments. When it finds an issue it can generate a committable fix, executing the code internally to test it. Developers can also @-mention it to implement a feature or fix a test, and it writes style-guide-conforming code as a pull request. A human reviews and merges throughout.
Integrations & setup
Installs as a GitHub or GitLab app, with Slack notifications. Configure a style guide and review rules per repo.
Pricing
Subscription, around $20/developer/month including reviews on every commit, PR summaries, code generation, and Q&A, with a custom enterprise plan adding SSO, priority support, and SLAs.
Best for / not for
Best for teams that want an AI to both review and write fixes via PRs. Less suited to teams that need broad Git-host coverage or a comment-only reviewer.
Traction
Ellipsis is a Y Combinator W24 company founded in 2024 with a reported $2M seed round; that figure is from public sources.
Alternatives
CodeRabbit and Greptile focus on review; Sweep is closest on autonomously opening fix PRs.
What people are saying
We aggregate real LinkedIn discussion into sentiment for the agents people search most. Ellipsis isn't tracked yet, want it added? Request tracking.
FAQ
Does Ellipsis just review code or can it fix it?+
Both. It reviews PRs and can also generate committable fixes and implement changes from a comment, opening PRs with tested code. A human reviews and merges, so it operates as a supervised agent.
How do you trigger Ellipsis to write code?+
Comment on a PR mentioning @ellipsis-dev with an instruction (for example fix a test or implement a feature) and it generates style-guide-conforming code as a pull request.
Sources
- Ellipsis (official site) · accessed 2026-06-19
- Ellipsis code review docs · accessed 2026-06-19
- Ellipsis (YC W24) on Y Combinator · accessed 2026-06-19
Last reviewed 2026-06-19