Built for Cursor developers

Cursor writes the code.
DevAssure tests the PR.

You're shipping 5× faster with Cursor. But who's testing what the AI writes?
Install the DevAssure Cursor extension to validate while you code, and add the GitHub Action to auto-test every PR — zero scripts, zero maintenance.

Install Cursor ExtensionAdd to GitHub ActionsSee how it works →
The Cursor paradox

You're shipping faster than ever.
Bugs are shipping faster too.

Cursor dramatically accelerates code output. But speed without validation is just faster failure.

AI code quality
1.7×

more major issues in AI co-authored code compared to manually written code. Fast doesn't mean correct.

Debugging paradox
63%

of developers using AI coding tools report spending more time debugging than before they started.

Testing gap
0%

of Cursor-generated code comes with E2E tests. Cursor writes features, not test suites. That gap is where production bugs live.

Your new workflow

Cursor builds it. O2 validates it. You ship it.

Test from the Cursor extension while you code — then gate every merge with the GitHub Action on each PR.

Cursor

You describe the feature. Cursor writes the code. You commit and open a PR.

DevAssure O2

O2 reads your changes — from the Cursor extension or PR diff — maps impacted flows, and runs E2E tests on real browsers.

Ship with confidence

Catch bugs in the IDE or on the PR. Ship with confidence. Zero test scripts written by you.

Step by step

What happens when Cursor writes
code and you push it.

  1. Cursor generates your feature code

    You prompt Cursor to build a checkout flow, a dashboard, or fix a bug. Cursor writes the code. You review — and can run DevAssure from the extension before you commit.

  2. You open a PR on GitHub

    Standard workflow. Push your branch, open a pull request against main. Nothing changes about how you work.

  3. O2 reads your changes

    From the Cursor extension (git-aware runs on your branch) or the GitHub Action on a PR, O2 analyzes changed files, functions, and dependencies to understand what Cursor actually modified.

  4. O2 generates and runs tests

    Based on the blast radius of the change, O2 creates targeted E2E tests and runs them on real headless browsers in CI.

  5. Results appear in your PR

    Bugs are flagged with screenshots and session replays. You fix and re-push — or merge with confidence.

O2 — PR #347 Analysis
// Cursor generated: checkout/address.tsx
// PR #347 → main

O2 Analysis
changed_files: 12
cursor_authored: true
context: 89 lines analyzed

Impact Map
  checkout_flow        AFFECTED
  address_validation   AFFECTED
  payment_gateway      WATCH
  user_profile         SAFE

Test Execution
tests_generated: 14
passed: 13
failed: 1

✗ P0 Bug: checkout_with_saved_address
→ Cursor missed null check on address.line2
→ Screenshot + replay attached to PR
Get started

Test in Cursor. Gate every PR in CI.

Two integrations, one O2 agent — fast feedback in the IDE and automated checks on every pull request.

.github/workflows/devassure.yml
name: DevAssure O2
on:
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - uses: actions/setup-node@v4
        with:
          node-version: "24"
      - name: Run DevAssure
        uses: devassure-ai/devassure-action@v1
        env:
          DEVASSURE_TOKEN: ${{ secrets.DEVASSURE_TOKEN }}

# Works with Cursor, Copilot, Claude Code,
# Windsurf — or human-written code.
The shift

Cursor development with and without DevAssure.

✕ Cursor without DevAssure
  • Cursor generates code → you push → bugs hit staging or production
  • Nobody writes tests for AI-generated features — there's no time
  • Code reviews catch style issues, not runtime bugs
  • 63% more time debugging than before you used AI
  • Speed feels productive but defect rate quietly climbs
  • "It worked in Cursor's preview" becomes the team mantra
✓ Cursor + DevAssure
  • Cursor extension catches bugs while you code; GitHub Action gates every PR
  • Cursor generates code → O2 tests the PR → bugs caught before merge
  • Every AI-generated feature gets E2E coverage automatically
  • Reviewers see test results alongside the diff — real confidence
  • Zero debugging surprises in staging — issues surface in CI
  • Speed is genuinely productive — validated velocity, not reckless speed
  • "O2 caught it before merge" becomes the new normal
Results

What Cursor teams see after adding O2.

~0

Test scripts to write

<30m

PR feedback time

100%

PR test coverage

2×

Faster validated releases

Not just Cursor

Works with every AI coding tool.

Copilot
Claude Code
VS Code
Windsurf
Bolt

I build full features in Cursor in 20 minutes. The DevAssure extension catches issues while I'm still in the IDE; the GitHub Action catches the rest on every PR — before I even ask for a code review.

— Engineering lead at a YC-backed startup using Cursor + DevAssure
FAQ

Testing Cursor-generated code — answered.

How do you test code generated by Cursor?

Two ways: install the DevAssure extension in Cursor to validate impacted flows from the IDE before you push, and add the DevAssure GitHub Action so every PR is auto-tested in CI. O2 reads your changes, generates E2E tests, runs them on real browsers, and surfaces results — no test scripts required.

Is there a DevAssure extension for Cursor?

Yes. Install DevAssure Invisible (QA) Agent from Open VSX — built for VS Code–compatible editors including Cursor. Trigger git-aware test runs from the sidebar while you code, then add the GitHub Action to gate every PR before merge.

Does DevAssure integrate with Cursor IDE and GitHub Actions?

Yes — that's the recommended setup. Use the Cursor extension for fast feedback while building, and the GitHub Action for automated validation on every pull request. Both use the same O2 agent; no duplicate test maintenance.

What bugs does DevAssure catch in Cursor-generated code?

Runtime bugs that code review misses: broken checkout flows, validation errors, null-reference failures, and UI regressions. In the IDE you see results immediately; on PRs you get screenshots and session replays attached to the check.

Do I need to write tests for Cursor-generated features?

No. O2 auto-generates and runs E2E tests from your code changes or PR diff. Zero Playwright scripts, zero Cypress maintenance.

Does DevAssure only work with Cursor?

No. DevAssure tests code diffs, not authors. The extension and GitHub Action work for Cursor, Copilot, Claude Code, Windsurf, Bolt, and human-written code.

Start today

Build with Cursor.
Ship with DevAssure.

Install the Cursor extension, add the GitHub Action, or both.
Free tier. 2-minute setup. No credit card.

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