---
title: Claude Code
description: Run Anthropic's Claude Code CLI against any Mirage workspace by mounting it as a real filesystem via FUSE.
icon: /images/claude-logo.svg
---

[Claude Code](https://github.com/anthropics/claude-code) is Anthropic's CLI for Claude. It expects a real filesystem and doesn't expose a pluggable backend, so instead of an SDK integration, Mirage exposes any workspace as a real filesystem via [FUSE](/python/setup/fuse) and lets you point `claude` at the mountpoint.

## Install

```bash
uv add 'mirage-ai[fuse]'
```

Then install [Claude Code](https://docs.claude.com/en/docs/claude-code/setup) separately.

## Usage

```python
from mirage import Mount, MountMode, Workspace
from mirage.resource.ram import RAMResource
from mirage.resource.s3 import S3Config, S3Resource

s3 = S3Resource(S3Config(bucket="my-bucket"))

with Workspace(
    {"/": Mount(RAMResource(), mode=MountMode.WRITE, fuse=True),
     "/s3": Mount(s3, mode=MountMode.READ)},
) as ws:
    print(f"cd {ws.fuse_mountpoint} && claude")
    input("Press Enter when done...")
```

The mountpoint behaves like a regular directory. `claude` reads, writes, runs `bash`, and patches files just like it would on a normal disk, every operation goes through Mirage's ops layer, so writes to `/s3/...` hit S3, writes to `/` stay in RAM.

## Why FUSE instead of an SDK integration?

Claude Code's tool-use loop is fully internal, there's no `Backend` interface to swap. FUSE gives Mirage a single unforced way in: present a real path, let the agent be the agent.

You lose:
- Per-tool prompt customization
- Observation hooks on tool calls
- Mirage's op-record telemetry on the agent's specific calls (host syscalls aren't recorded the same way)

You gain:
- Zero integration effort
- Compatibility with every Claude Code feature, including future ones
- The same approach works for any other directory-based agent ([OpenAI Codex](/python/agents/codex), `aider`, etc.)
