sembr

v1.1.0

Skills for reflowing prose with Semantic Line Breaks (sembr.org)

CodexClaude CodeAgent Plugins1 Skill

By Semantic Line BreaksLicense: MIT10 GitHub starsUpdated 3 weeks ago

Directory evidence

Runtimes: Codex, Claude Code, and Agent Plugins
Parsed components: 1 skill or MCP entry
Source updated: Sep 23, 2026
Manifest status: Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install sembr for Codex and Claude Code

Installs for the current user

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

Paste and run these commands in a terminal with Codex. They add and refresh the sembr catalog, then install this plugin.

Compatibility: the page URL and API slug “sembr” remain stable.

Codex: sembr@agent-plugin-marketplace → sembr@sembr

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually

$ git clone https://github.com/sembr/skills

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The repository root is the plugin root.

Plugin files

sembr/

├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
├── plugin.json
└── skills/sembr-reformat/SKILL.md

Included Skills1

sembr-reformatskills/sembr-reformat/SKILL.md

Reformat prose using Semantic Line Breaks (SemBr) from https://sembr.org while preserving rendered output and meaning. Use when asked to reflow plain text or compatible markup (Markdown, AsciiDoc, reStructuredText, LaTeX, Org, MediaWiki) into semantic one-thought-per-line formatting, or when improving prose diffs and editorial readability.

Plugin manifests3

.codex-plugin/plugin.json

{
  "name": "sembr",
  "version": "1.1.0",
  "description": "Skills for reflowing prose with Semantic Line Breaks (sembr.org)",
  "author": {
    "name": "Semantic Line Breaks",
    "url": "https://sembr.org"
  },
  "homepage": "https://sembr.org",
  "repository": "https://github.com/sembr/skills",
  "license": "MIT",
  "keywords": [
    "sembr",
    "semantic-line-breaks",
    "prose",
    "writing",
    "formatting"
  ],
  "skills": "./skills/",
  "interface": {
    "displayName": "SemBr",
    "shortDescription": "Reformat prose with Semantic Line Breaks.",
    "longDescription": "Apply Semantic Line Breaks to prose while preserving wording, meaning, and rendered output.",
    "developerName": "Semantic Line Breaks",
    "category": "Productivity",
    "capabilities": [
      "Read",
      "Write"
    ],
    "websiteURL": "https://sembr.org",
    "defaultPrompt": [
      "Apply semantic line breaks to README.md."
    ]
  }
}

.claude-plugin/plugin.json

{
  "name": "sembr",
  "description": "Skills for reflowing prose with Semantic Line Breaks (sembr.org)",
  "version": "1.1.0",
  "author": {
    "name": "Semantic Line Breaks",
    "url": "https://sembr.org"
  },
  "homepage": "https://sembr.org"
}

plugin.json

{
  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
  "name": "sembr",
  "version": "1.1.0",
  "description": "Skills for reflowing prose with Semantic Line Breaks (sembr.org)",
  "author": {
    "name": "Semantic Line Breaks",
    "url": "https://sembr.org"
  },
  "homepage": "https://sembr.org",
  "repository": "https://github.com/sembr/skills",
  "license": "MIT",
  "keywords": [
    "sembr",
    "semantic-line-breaks",
    "prose",
    "writing",
    "formatting"
  ],
  "extensions": {
    "com.openai": {
      "interface": {
        "displayName": "SemBr",
        "shortDescription": "Reformat prose with Semantic Line Breaks.",
        "longDescription": "Apply Semantic Line Breaks to prose while preserving wording, meaning, and rendered output.",
        "developerName": "Semantic Line Breaks",
        "category": "Productivity",
        "capabilities": [
          "Read",
          "Write"
        ],
        "websiteURL": "https://sembr.org",
        "defaultPrompt": [
          "Apply semantic line breaks to README.md."
        ]
      }
    }
  }
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[sembr on Agent Plugins Marketplace](https://pluginsmp.com/plugins/sembr)