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CobaltCode

@CobaltCode_ai

Give your coding agent a dedicated computer for each task. Run your app, preview your changes, create a PR - across as many tasks as tou want

cobaltcode.ai
Joined July 2026
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Cobalt is live. Connect a GitHub repo, describe the task the way you'd describe it to another developer, and get back a pull request you can review. cobaltcode.ai/blog/introduci…
Introducing Cobalt: an AI developer with its own computer — Cobalt Blog

Introducing Cobalt: an AI developer with its own computer — Cobalt Blog

Hand off a coding task, watch your app change live, and come back to tested, reviewable software in your GitHub repository.

cobaltcode.ai
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Leave Cobalt in a background tab. The title shows how many unread messages are waiting for you. cobaltcode.ai/blog/workspace…
Repository groups and a better mobile workspace in Cobalt — Cobalt Blog

Repository groups and a better mobile workspace in Cobalt — Cobalt Blog

Group tasks by repository, move between chat and Preview on mobile, and see unread messages and new versions from your browser tab.

cobaltcode.ai
Review a result from your phone. Switch between the conversation and Preview and your half-written message is still there when you come back.
Cobalt Blog: Repository groups and a better mobile workspace in Cobalt

ALT Cobalt Blog: Repository groups and a better mobile workspace in Cobalt

Group your tasks by repository. Expand the project you are working on, collapse the rest, and reach last week's task without paging past a busy review Loop.
Cobalt task sidebar grouping tasks under their repositories

ALT Cobalt task sidebar grouping tasks under their repositories

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Three improvements to the Cobalt workspace: repository groups in the task sidebar, a mobile layout with more room for chat and Preview, and unread messages in your browser tab.
Cobalt Blog: Repository groups and a better mobile workspace in Cobalt

ALT Cobalt Blog: Repository groups and a better mobile workspace in Cobalt

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Keep the failing check when you report a regression, and run the same script again once the fix is in. cobaltcode.ai/blog/scripted-…
Run Playwright browser checks in Cobalt — Cobalt Blog

Run Playwright browser checks in Cobalt — Cobalt Blog

Run Playwright scripts against Agent Browser and capture the flow as a captioned recording for review.

cobaltcode.ai
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Ask for the check and the evidence together: "Write and run a Playwright check in Agent Browser that saves the display name, reloads, and asserts it persisted. Record the run with captions and show me the script and results."
Cobalt Blog: Run Playwright browser checks in Cobalt

ALT Cobalt Blog: Run Playwright browser checks in Cobalt

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One script runs the whole journey: fill the form, save, reload, assert. Your agent spends its next turn reading the result instead of asking for every click.
A completed Playwright browser recording beside its saved assertion report in Cobalt

ALT A completed Playwright browser recording beside its saved assertion report in Cobalt

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Cobalt agents can now run Playwright scripts in Agent Browser. Ask for a repeatable check of your application and get back the assertions and a captioned recording.
Cobalt Blog: Run Playwright browser checks in Cobalt

ALT Cobalt Blog: Run Playwright browser checks in Cobalt

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Make Cobalt's review a merge requirement, then let GitHub or Azure DevOps complete the PR under your own branch policies. cobaltcode.ai/blog/automate-…
Automate bugfixes with Cobalt Loops — Cobalt Blog

Automate bugfixes with Cobalt Loops — Cobalt Blog

Set up bug triage and PR review around a tested correction, then choose how to handle review findings and completion.

cobaltcode.ai
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Give Bug triage a report it can test: "Reproduce the page-count error: 21 items at ten per page returns two pages instead of three. Add a regression test. If the fix is localized, implement it and open a PR with the before-and-after results."
Cobalt Blog: Automate bugfixes with Cobalt Loops

ALT Cobalt Blog: Automate bugfixes with Cobalt Loops

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Bug triage reads the issue and its discussion, finds the likely cause, and posts an implementation plan before it changes any code.
Cobalt displaying the review of the pagination fix, including verification results and limitations

ALT Cobalt displaying the review of the pagination fix, including verification results and limitations

New guide: automate bugfixes with Cobalt Loops. Follow one pagination bug from the report through investigation, a tested correction and an independent review.
Cobalt Blog: Automate bugfixes with Cobalt Loops

ALT Cobalt Blog: Automate bugfixes with Cobalt Loops

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Start with the request you already make on every pull request, and let a Loop make it for you. cobaltcode.ai/blog/common-lo…
Get started with Common Loops — Cobalt Blog

Get started with Common Loops — Cobalt Blog

Choose ready-made Loops for bug triage, PR review, follow-up fixes, and optional PR auto-completion, then adapt them to your repository.

cobaltcode.ai
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Teach a Common Loop about your repository: "Update this PR review Loop to check CSV imports for duplicate customer rows and interrupted uploads. Run the import tests and report the exact failing case."
Cobalt Blog: Get started with Common Loops

ALT Cobalt Blog: Get started with Common Loops

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PR review keeps one reusable task per pull request. When the author pushes a new revision, the next review already knows what it found last time.
The Common Loops choices for a test repository: PR review, PR fixes, Auto-complete PRs, and Bug triage

ALT The Common Loops choices for a test repository: PR review, PR fixes, Auto-complete PRs, and Bug triage

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Common Loops are now in Cobalt: ready-made PR review, Bug triage, PR fixes and Auto-complete PRs. Choose the ones you want, pick a coding agent, and they start working on your repository.
Cobalt Blog: Get started with Common Loops

ALT Cobalt Blog: Get started with Common Loops

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Keep the investigation and the fix as separate tasks on the same issue, each with its own history and computer. cobaltcode.ai/blog/issues-wo…
Issues have a workspace in Cobalt — Cobalt Blog

Issues have a workspace in Cobalt — Cobalt Blog

Browse issues, keep their discussion and saved outputs together, and connect the tasks that investigate and implement the work.

cobaltcode.ai
Hand an issue to the workspace assistant: "Investigate why the final search-results page is missing. Read this issue and its discussion, cite the evidence for each finding, and save an investigation note with the issue."
Cobalt Blog: Issues have a workspace in Cobalt

ALT Cobalt Blog: Issues have a workspace in Cobalt

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Read the whole issue before you delegate it. Cobalt shows the description, child issues and comments together, including the later comment that corrects the original report.
Cobalt issue workspace showing a pagination bug, its reproduction, properties, and triage discussion

ALT Cobalt issue workspace showing a pagination bug, its reproduction, properties, and triage discussion

Issues now have their own workspace in Cobalt. Browse GitHub issues, Azure DevOps work items and Linear issues, read the discussion, and connect the tasks doing the work.
Cobalt Blog: Issues have a workspace in Cobalt

ALT Cobalt Blog: Issues have a workspace in Cobalt

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