Solutions · Improve patch resilience

Ship security patches that pass CI and actually merge

Nullify writes minimal fixes in your team's conventions, validates them before the pull request opens and keeps repairing them until they're ready to merge.

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Trusted by security teams at

The problem

A patch that breaks the build never merges

Writing a security patch is the easy part. Any coding assistant can produce one. Getting it merged is where most patches die.

The fix ignores the repo's conventions, so the reviewer rewrites it. It fails a test nobody ran, so it sits as a red branch. Main moves on, the branch conflicts, and the PR goes stale. After a few of these, developers stop opening security PRs at all.

Every patch that doesn't hold up costs twice: the time spent generating it, and the trust you lose with the developers who had to clean it up.

In practice

What happens after the pull request opens

</self-healing>

Validated before the pull request opensBuild and relevant tests pass
A CI check fails after main moves onNullify reads the build logs to find the cause
Follow-up commits pushedRebased onto the latest main and re-validated
All checks passingReady for review, with no developer rework
Approved by a developerYouNullify never merges on its own

Illustrative example

</edge cases>

What Nullify handles after the PR opens

The fix breaks the buildReads the CI logs and pushes commits until checks pass

Merge conflict with mainRebases and re-validates the fix

The pull request goes staleNudges the reviewer and refreshes the branch

The owner has moved onRe-resolves ownership and reassigns

Handled by the manager agent in Security Program Management.

The outcome

What changes with Nullify

Fixes are minimal and aimed at the root cause

Each patch changes only what's needed and is written against your actual code and conventions.

Validated before anyone sees it

Proposed fixes are independently reviewed and checked against your build and tests before the pull request opens.

Self-healing when CI fails

Nullify reads the build logs, finds the cause and pushes follow-up commits until every check passes.

Kept current with main

When a fix conflicts with main, Nullify rebases onto the latest code and re-validates before asking for review again.

Developers rarely touch them

Across customers, 89% of Nullify fixes are merge-ready, and developers refactor one only about 1 in 10 times.

A human still decides

Nullify never auto-merges. Your developers review and approve every change.

How it works

Three steps, inside the workflow you already have

Write the fix in your conventions

Autofix uses repository context to write a minimal, root-cause change that reads like your team wrote it.

Validate before the PR opens

Each fix is independently reviewed and run against your build and relevant tests. Only fixes that pass reach your developers, routed to the owner of the code.

Repair it until it's ready

While the PR is open, Nullify fixes CI failures, resolves conflicts with main and refreshes stale branches. Open fix PRs are capped at 3 per repository, so reviewers aren't flooded.

The product

The features behind it

Autofix with self-healing fixes

Minimal, root-cause patches, validated against the build and repaired from CI logs until green.

Triage and remediation →

Manager agent

Handles the edge cases after a PR opens, from merge conflicts to stale reviews and reassignments.

Security program management →

Exploit validation

Fixes for REST and GraphQL findings start from reproducible exploit evidence.

Exploit validation →

Proof in production

Outcomes from teams like yours

89%

merge-ready rate across our customers

~1 in 10

Nullify fixes refactored by developers

100%

of generated patches merge-ready for one media customer

FAQ

Frequently asked questions

What is patch resilience?

It's how well a security fix holds up between being written and being merged: whether it passes CI, survives code review and stays valid as the codebase changes. A resilient patch needs no developer rework to merge.

What happens when a Nullify fix fails CI?

Nullify reads the CI output, works out why the check failed and pushes follow-up commits to its own pull request until the checks pass. No developer has to babysit it.

How is this different from asking an AI coding assistant for a fix?

A coding assistant can write a patch, but it doesn't validate it against your build, route it to the right owner, repair it when CI fails or keep it current with main. Nullify handles that last mile, so the patch reaches merge.

Does Nullify merge its own fixes?

No. Nullify gets each fix to merge-ready and manages it through CI and review, but your team approves every merge.

Get security fixes your developers actually merge

See Nullify write a fix for a vulnerability in your codebase and take it through CI.

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