OpenAI Codex and Anthropic Claude Code enable computer-use AI; MCP is a standard
The article explains “computer-use,” a feature that lets an AI click, type and read a screen, and compares how OpenAI’s Codex, Anthropic’s Claude Code, and the MCP standard implement it. Official materials up to September 22 2026 confirm that Codex supports computer-use on macOS and Windows desktop apps, useful for GUI‑only bugs or visual checks.
Key points
- OpenAI's Codex offers computer-use for macOS and Windows desktop apps, allowing AI to click and type while observing the screen.
- Anthropic's Claude Code includes computer-use as a research preview for macOS Pro/Max, accessible via CLI /mcp and desktop integration.
- MCP is a standard for connecting AI tools via APIs, not a screen‑operating feature; Claude Code's computer-use runs as a built‑in MCP server.
Claude Code also offers computer-use, but only as a research preview for macOS Pro/Max. It can be activated from the CLI via the /mcp flag or through a desktop integration, and it includes a separate Chrome‑integration mode for web‑based screens. MCP itself is not a screen‑operating tool; it is a common API‑based way to connect AI apps to external services, and Claude Code’s computer-use runs on a built‑in MCP server.
The piece advises splitting work between dedicated integrations (via MCP or APIs) for data retrieval and computer-use for visual verification, recommending small pilot tasks and clear completion conditions to evaluate reliability and cost.
The story so far
3 episodes →- OpenAI Codex and Anthropic Claude Code enable computer-use AI; MCP is a standardthis story
What is "Computer Use" where AI operates a PC? Comparing Codex, Claude Code, and MCP
note.com · 21 September 2026
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