Visual editor for Claude Code

The visual editor for Claude Code.

Stop reading terminal output and trusting blind edits. See every Claude Code change as a red and green inline diff across markdown, mockups, diagrams, code, and data models. Approve or reject each one in place.

Nimbalyst — the visual editor for Claude Code

Claude Code is fast. Reading its diffs in a terminal is not.

Claude Code is one of the most capable AI coding agents in 2026. It is also a terminal application. For small edits that is fine. For real work, where the agent is rewriting many files at once, the terminal becomes a bottleneck for review.

Nimbalyst is a visual editor for Claude Code. It runs Claude Code as the agent underneath and surfaces every change visually: WYSIWYG markdown with inline diffs, side-by-side mockup edits, diagram changes you can see at a glance, and per-session file traceability so you always know which session changed what.

Why Nimbalyst

What a visual editor for Claude Code does that the terminal cannot

WYSIWYG markdown with AI diffs

WYSIWYG markdown with AI diffs

Claude Code edits your markdown. You see the diff inline, in the rendered document. Approve or reject per change without reading raw markdown in a terminal.

Per-file diff review across the project

Per-file diff review across the project

See every file Claude Code touched in a session. Navigate file by file. Accept the good edits, reject the bad ones, and keep going.

Visual editing for diagrams and mockups

Visual editing for diagrams and mockups

Claude Code can edit Excalidraw diagrams, MockupLM UI mockups, and data model schemas. You see the visual change, not just the JSON behind it.

Session-aware editing

Session-aware editing

Every editor pane shows which Claude Code session made the current change. No more wondering which agent edited what.

Comparison

Visual editor for Claude Code vs the terminal CLI

Feature Claude Code CLI Nimbalyst
Markdown editing Terminal output WYSIWYG with inline AI diffs
Diff review Terminal diff text Inline red and green per file
Mockups and diagrams Visual editors with AI support
Per-session file traceability Files-edited sidebar per session
Mobile review iOS app for reviewing diffs from your phone
Open source Closed source (Anthropic) MIT (desktop app) + AGPL (team)

FAQ

Frequently asked questions

Is Nimbalyst a visual editor for Claude Code?
Yes. Nimbalyst is a visual editor for Claude Code. Every Claude Code change is surfaced as an inline diff across markdown, mockups, diagrams, code, and data models. You approve or reject each one before it lands.
Does the visual editor replace the Claude Code CLI?
No. Nimbalyst runs the actual Claude Code agent underneath. The CLI you already use is the engine. Nimbalyst is the visual layer around it: visual editors, diff review, kanban session management, and mobile access.
Can I edit markdown visually with Claude Code?
Yes. Nimbalyst's WYSIWYG markdown editor works alongside Claude Code. You can write directly, ask Claude Code to draft or rewrite sections, and review every AI edit as a red and green inline diff in the rendered document.
What file types can Claude Code edit visually in Nimbalyst?
Markdown (WYSIWYG with diffs), code (Monaco editor with diff review), Excalidraw diagrams, MockupLM UI mockups, data models (Prisma schemas), CSV spreadsheets, and Mermaid diagrams. Each file type has a purpose-built editor with AI support.
Is Nimbalyst free?
Yes. The Nimbalyst desktop app is free for individual use. You bring your own Claude Code subscription or Anthropic API key. The desktop app is MIT licensed, and the optional team collaboration layer is AGPL or commercial.

Nimbalyst is the open-source visual workspace for building with Codex, Claude Code, and more