# Use Specset from Claude and Codex

> Install Specset as a native plugin in Claude or Codex, use the same project-aware skills and MCP tools, and move files without leaving your agent workflow.

Source: https://docs.specset.com/changelog/2026-07-30-specset-for-claude-and-codex · Published: 2026-07-30

Specset is now available as a native plugin for both Claude and Codex. Install one bundle to give either agent the project context and construction workflows it needs.

- **Nine shared skills.** Search specs and drawings, set up projects, manage submittals and RFIs, work with closeout records, ask project agents, and administer your organization.
- **Native MCP tools.** Search and read structured Specset content directly, with the same tool registry on both agents.
- **Secure sign-in.** Local plugins use browser or device authorization through the Specset CLI. Hosted ChatGPT connections use organization-scoped OAuth.
- **File transfers.** Claude and Codex can stream local uploads and downloads through the CLI. Hosted clients can pass attachments and receive short-lived download links through MCP.

The plugin defaults to read-only work and asks before changing project data. Credentials stay in the local CLI or the hosted OAuth connection rather than in the conversation.

![Specset plugin details in Claude showing the shared skills and MCP connector](https://docs.specset.com/images/docs/claude-plugin/plugin-details.png)

Follow the setup guides for [Claude](https://docs.specset.com/docs/claude-plugin) and [Codex](https://docs.specset.com/docs/chatgpt-codex).