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After ForgeAI generates your project, you can open any file and edit it directly in the browser. The inline editor is built on Monaco — the same engine that powers VS Code — so you get syntax highlighting, bracket matching, and TypeScript-aware editing without leaving ForgeAI.
The inline code editor is a Pro feature and requires an active Pro subscription. Saving edits without a Pro subscription returns a 403 error from the API ({ "error": "Pro is required" }).

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Opening the editor

In any project view, switch to the Code tab (the </> icon next to the preview toggle). A file explorer panel opens on the left listing every file the agent generated. Click a file in the tree to open it in the editor pane on the right. You can switch between files freely — unsaved changes to each file are kept in memory until you save or navigate away.

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Editing files

The editor provides:
  • Syntax highlighting for TypeScript, JavaScript, JSON, CSS, YAML, and Markdown
  • TypeScript support — JSX syntax, ES2020 target, and module resolution are pre-configured so .tsx files work correctly
  • Word wrap — long lines wrap automatically; no horizontal scrolling
  • VS Code theme (vs-dark) for comfortable reading
Make any changes you need directly in the editor pane. Your edits are tracked locally and shown immediately.

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Saving changes

When you’re ready to apply your changes, click the save icon in the toolbar above the editor. This sends a PATCH request to /api/fragments/:fragmentId with your modified files. The API handler writes the updated file content directly to the E2B sandbox, so the running dev server picks up the changes via hot reload — the live preview updates within seconds.
Only files you have modified are sent in the patch request. Unchanged files are not re-written to the sandbox.

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Copying file content

To copy the full content of the currently open file to the clipboard, click the copy icon in the toolbar. This works for all users regardless of plan.

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