SemBr Skills

Agent Skills for working with Semantic Line Breaks. The sembr-reformat skill reflows prose while preserving wording, meaning, and rendered output.

Installing

The skills CLI works with Claude Code, Cursor, Codex, OpenCode, Pi, and other supported coding agents. With Node.js and npm installed, run this command in your project directory:

npx skills add sembr/skills

The installer lets you select your agent and installation scope. Project installation is the default. To make the skill available across your projects, use --global:

npx skills add sembr/skills --global

You can select an agent with --agent, for example --agent codex or --agent claude-code. The CLI supports symlinks or copies; its default symlinks let several agents use one installed copy.

Alternatively, the CLI can discover the skill from the website:

npx skills add https://sembr.org

Use one installation method for each agent so that it does not load duplicate copies of the skill. The following sections cover native plugin and package managers.

Claude Code

In Claude Code, add the marketplace and then install the plugin:

/plugin marketplace add sembr/skills
/plugin install sembr@sembr

Adding the marketplace makes its catalog available; the second command installs the plugin. The installer offers user, project, and local scopes. Follow its activation instructions after installation.

The /plugin manager lets you view, enable, disable, or remove the plugin. Under Marketplaces > sembr, you can enable auto-update. Third-party marketplaces have auto-update disabled by default. See the Claude Code plugin guide for manual updates and scope options.

Cursor

In Customize, open Plugins, then select Add > From GitHub Repository and enter https://github.com/sembr/skills. After importing the marketplace, install the sembr plugin. The repository includes the Cursor marketplace manifest required for import.

The skill appears in Customize with your other skills. Use Cursor’s plugin controls to manage the installation. See Cursor plugins and Agent Skills for installation and usage details.

Codex

With Codex CLI installed, run these commands in your terminal:

codex plugin marketplace add sembr/skills
codex plugin add sembr@sembr

The first command adds the marketplace; the second installs the SemBr plugin. Start a new Codex session to use its skill. In Codex CLI, /plugins opens the plugin browser, where you can inspect the plugin and turn it on or off.

To fetch marketplace changes and reinstall the plugin:

codex plugin marketplace upgrade sembr
codex plugin remove sembr@sembr
codex plugin add sembr@sembr