Feature request: `claude://` URL scheme for deep linking into Claude Code with pre-loaded context

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Feature request: claude:// URL scheme for deep linking into a session with pre-loaded context

Use case

I'm building a planning tool (Muse) that generates structured project briefs. I want a "Start building with Claude" button that opens Claude Code with the brief already loaded as context — so the user lands in a session ready to build, without copy-pasting.

What I'm asking for

A claude:// URL scheme registered by the Claude Code desktop app, supporting something like:

claude://new?prompt=<encoded-text>
or

claude://new?context=<base64-encoded-json>
Why it matters

This unlocks a whole category of tool integrations — design tools, planning tools, project managers — that want to hand off structured context to Claude Code in one click. Right now there's no clean way to do this from a web app button without CLI access or manual copy-paste.

Proposed Solution

Proposed solution

The Claude Code desktop app registers a claude:// URL scheme on install. A web app or tool constructs a URL like:

claude://new?prompt=<url-encoded-text>
or for structured data:

claude://new?context=<base64-encoded-json>
Clicking the URL opens Claude Code (or focuses it if already running) and starts a new session with the prompt or context pre-loaded — exactly like opening a terminal and piping text in, but triggerable from any browser or app.

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_