Codend
  • Pricing
  • Docs

Explore the product

  • AgentHand off a task, get a pull request
  • AutomationsRun tasks on a schedule
  • IntegrationsBring in GitHub, Notion and more

Get started

  • PricingFree, Plus, Pro and Max
  • Start freeDaily credits, no card required

Who it’s for

  • Solo developersShip more on your own.
  • StartupsMove fast with a small team.
  • AgenciesDeliver client work sooner.
  • FoundersFrom idea to live product.
  • Product managersPrototypes, not specs.

Use cases

  • WebsitesFrom prompt to published site.
  • Bug fixesFind the cause and ship the fix.
  • TestsCover the code you already have.
  • Dependency upgradesStay current without breaking things.
  • AutomationsRun tasks on a schedule

Explore resources

  • FAQAnswers to common questions
  • DocsGuides and reference
  • BlogNews, updates and notes from the team.
  • ChangelogWhat shipped and when

Support

  • StatusUptime and incidents
  • Privacy policyHow we handle your data
  • Terms of serviceThe rules for using Codend
Sign inSign up
Codend

Product

Explore the product

  • AgentHand off a task, get a pull request
  • AutomationsRun tasks on a schedule
  • IntegrationsBring in GitHub, Notion and more

Get started

  • PricingFree, Plus, Pro and Max
  • Start freeDaily credits, no card required

Solutions

Who it’s for

  • Solo developersShip more on your own.
  • StartupsMove fast with a small team.
  • AgenciesDeliver client work sooner.
  • FoundersFrom idea to live product.
  • Product managersPrototypes, not specs.

Use cases

  • WebsitesFrom prompt to published site.
  • Bug fixesFind the cause and ship the fix.
  • TestsCover the code you already have.
  • Dependency upgradesStay current without breaking things.
  • AutomationsRun tasks on a schedule

Resources

Explore resources

  • FAQAnswers to common questions
  • DocsGuides and reference
  • BlogNews, updates and notes from the team.
  • ChangelogWhat shipped and when

Support

  • StatusUptime and incidents
  • Privacy policyHow we handle your data
  • Terms of serviceThe rules for using Codend
Sign inSign up

Bug fixes

Describe the bug. Get a tested fix.

Codend finds the cause, fixes it and adds a test so it stays fixed, then opens a pull request.

Get startedSee pricing
cart.test.ts
$ npm test FAIL  cart.test.ts › total rounds to cents  Expected: 19.99  Received: 19.98Tests  1 failed, 95 passed

How it helps

From report to fix

  1. const total = items.reduce(…)return Math.floor(total * 100) / 100

    01

    It finds the cause

    Codend reads the code around the problem and explains what goes wrong before it changes anything.

  2. - Math.floor(total * 100) / 100+ Math.round(total * 100) / 100

    02

    A focused fix

    Only the lines that need to change, plus a test that fails before the fix and passes after.

  3. cart.test.tstypecheckbuild

    03

    Ready to merge

    You get a pull request with the cause, the fix and the passing checks.

The pull request

Every fix comes with proof

You don’t take the fix on trust. The pull request shows why it broke and how you know it’s fixed.

  • The cause, explained in plain words
  • A test that failed before the fix
  • Your checks, all passing
Pull request #41

#41

Keep sessions alive across token refresh

codend/fix-session-expiry → main · +54 −3

  • Tests passed
  • Typecheck passed
  • Build passed

Ready for your review. Merging is up to you.

What it fixes

The bugs that eat your week

  • Crashes

    Errors in the logs or a blank screen, traced to the line that throws.

  • Wrong results

    Totals, dates and states that are off, with a test that pins the right answer.

  • Broken layouts

    Pages that break on a phone or one browser, checked in a real browser.

  • Slow pages

    Slow queries and heavy renders, measured before and after the change.

Try it

Start with one of these

  • Login loop. Users get sent back to the login page after signing in on Safari. Find out why and fix it.

    Try it
  • Wrong totals. The cart total is off by a cent for some prices. Find the rounding bug and fix it.

    Try it
  • Crash on an empty list. The dashboard crashes when a user has no projects. Fix it and show an empty state.

    Try it

Questions

From a task to a pull request

Describe the work in plain words. Codend plans it, writes the code, runs your tests and hands it back for you to review.

Get started

Product

  • Agent
  • Automations
  • Integrations
  • Pricing
  • Changelog

Solutions

  • Websites
  • Bug fixes
  • Tests
  • Dependency upgrades
  • Solo developers
  • Startups
  • Agencies
  • Founders
  • Product managers

Resources

  • Docs
  • Blog
  • FAQ
  • Status
  • Contact

Get started

  • Start free
  • Log in
  • Pricing

Try a prompt

  • Coffee shop website
  • Photographer portfolio
  • Fix failing tests
  • Weekly GitHub summary
  • Logo for a bakery
  • Dark mode toggle

Legal

  • Privacy policy
  • Terms of service
  • Refund policy

Codend © 2026

Privacy policy·Contact