title: How the factory validates CI before opening a PR description: A look at how Nexus Factory runs the full review-and-verify loop so every pull request it opens has already passed CI. slug: ci-validation-before-pr date: '2026-09-15' author: AllCode Engineering ogImage: /allcode-nexus-factory.png tags:
- autonomous-development
- ci-cd draft: false
When Nexus Factory picks up a requirement, the goal is simple: the pull request it opens should be one a human would be comfortable merging. That means the work has to be validated before the PR exists, not after. Here is how the pipeline gets there.
Coders build against the real project
Every coder agent clones the target repository and reads the project's own build
and test commands before writing a line of code. Instead of guessing at a build
step, it discovers the manifest — package.json, Cargo.toml, a Makefile —
and runs the same commands your team runs locally. A change that does not compile
never leaves the coder's workspace.
Reviewers verify correctness, not vibes
Once a coder pushes its branch, the reviewers take over. For anything beyond a trivial change, the Task Arena spins up specialized reviewers for security, correctness, and style, and a judge synthesizes their verdicts. The reviewers re-run the scoped build and tests for the packages that changed, so an approval is backed by a green build rather than an optimistic read of the diff.
The merger only combines validated branches
The merger is the last gate. It combines the approved per-task branches into a single branch, resolves conflicts, and runs the verification one more time on the combined result. Only then does it open the pull request — with a description that summarizes what changed, what was tested, and which branches were merged.
Why this matters
Shipping code that fails CI wastes everyone's time and erodes trust in automation. By folding validation into every stage — coder, reviewer, merger — the factory treats a passing build as a precondition for a PR, not an afterthought. The result is a pull request that is ready for review the moment it appears.