Formatter

Auto-formats files after Claude edits using language-specific formatters and linters. Runs silently after every Write or Edit operation, supporting C++, CMake, Shell, Markdown, JSON, YAML, and JavaScript/TypeScript.

Features

Keeps your code consistently formatted without manual intervention.

• 🔧 Automatic: Runs after every Write or Edit operation
• 🌐 Multi-language: Supports C++, CMake, Shell, Markdown, JSON, YAML, and JS/TS
• 🤫 Silent: Only warns when a formatter is missing

Installation

Interactive

Use the plugin manager UI in Claude Code.

1. Run /plugin in Claude Code Enter
2. Go to Marketplaces Tab
3. Select + Add Marketplace Enter
4. Type tenzir/claude-plugins Enter
5. Install formatter from the plugin list

Shell

Run the CLI command with your preferred scope.

# Install to user scope (default)
claude plugin install formatter@tenzir

# Install to project scope (shared with team)
claude plugin install formatter@tenzir --scope project

# Install to local scope (gitignored)
claude plugin install formatter@tenzir --scope local

Settings

Add the marketplace and plugin to your settings file.

.claude/settings.json

{
  "extraKnownMarketplaces": {
    "tenzir": {
      "source": {
        "source": "github",
        "repo": "tenzir/claude-plugins"
      }
    }
  },
  "enabledPlugins": {
    "formatter@tenzir": true
  }
}

Capabilities

Type	Name	Description
Hook	PostToolUse	Triggers on Write, Edit

Usage

The plugin runs automatically after every Write or Edit operation. No commands to remember.

When you ask Claude to edit a C++ file:

You: Add a debug log statement to process_data()
Claude: [Edit tool runs]
Formatter: [clang-format runs silently in background]

The file ends up formatted according to your .clang-format config, even if Claude’s edit had inconsistent spacing.

Different file types trigger their respective formatters:

You edit…	Formatter runs
parser.cpp	clang-format
CMakeLists.txt	cmake-format
deploy.sh	shfmt (uses .editorconfig if available)
README.md	markdownlint, then prettier
config.json	prettier
pipeline.yaml	yamllint (linting only)
app.tsx	eslint

If a formatter is missing, you get a warning but the edit still completes:

cmake-format not found, skipping auto-formatting

Install the formatters you need and ignore the rest.

Changelog

View the release history and recent changes.

View on GitHub

Browse the plugin source code and documentation.