Normal Mode
One agent on one task.
Hand over a bug fix, a refactor, or a feature you can describe in a paragraph, and get a branch back.
How sessions workDev404 is the ambitious AI CTO for your ambitious ideas.
How it works
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1
Connect a repository
Link a GitHub or GitLab project. Dev404 reads the codebase and follows the conventions already in it.
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2
Approve the plan
Before any code is written, you see which files will change, in what order, and how the result will be checked.
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3
Review the branch
You get the diff, the test results, and a plain note on anything still at risk. Merging is your call.
Three modes, picked by the size of the job
Ultra Code
A team of agents for the hard problems.
Specialists split the work, each in its own virtual machine, and coordinate in a shared channel. A separate agent reviews the result.
How subagents workFullstack Mode
Start from an idea, not a codebase.
Describe what you want to build. Dev404 builds the full stack in a real repository you can take over at any time.
Building and hostingYou decide what ships
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The run doesn’t need your laptop
Work happens in the cloud. Close the tab and come back when it’s done.
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Every task gets its own branch
Nothing reaches your main branch until you merge it.
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Reviewed before you see it
A separate agent reviews the change and reruns the checks.
Dev404 IDE Beta
The same agents in your editor, next to your local code.
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Ultra Code, locally
Run a team of agents on the project that’s on your machine.
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Send to Cloud
Move a session to the cloud in one click, so it keeps going after your laptop closes.
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Live Code
You, your teammates, and the agents edit the same files in one live session.