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36 lines
1.4 KiB
Plaintext
36 lines
1.4 KiB
Plaintext
---
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title: OpenAI Codex
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description: Run OpenAI's Codex CLI against any Mirage workspace by mounting it as a real filesystem via FUSE.
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icon: /images/openai-logo.svg
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---
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[OpenAI Codex](https://github.com/openai/codex) is OpenAI's coding-agent CLI. Like [Claude Code](/python/agents/claude-code), it operates on a real filesystem and doesn't expose a pluggable backend, so Mirage integrates by [FUSE-mounting](/python/setup/fuse) a workspace and letting you point `codex` at the mountpoint.
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## Install
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```bash
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uv add 'mirage-ai[fuse]'
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```
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Then install [OpenAI Codex](https://github.com/openai/codex) separately.
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## Usage
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```python
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from mirage import Mount, MountMode, Workspace
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from mirage.resource.ram import RAMResource
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with Workspace(
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{"/": Mount(RAMResource(), mode=MountMode.WRITE, fuse=True)}) as ws:
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print(f"cd {ws.fuse_mountpoint} && codex")
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input("Press Enter when done...")
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```
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The mountpoint behaves like a regular directory. Codex's `read_file`, `write_file`, and `run_shell` tools all dispatch through Mirage's ops layer.
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## Why FUSE instead of an SDK integration?
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The Codex CLI's tool surface isn't pluggable, it expects host file operations. FUSE makes those host operations *be* Mirage operations.
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You lose per-tool customization and Mirage's op-record telemetry; you gain zero integration effort and compatibility with every Codex feature. Same trade-off as [Claude Code](/python/agents/claude-code).
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