Create and distribute a plugin marketplace

Build and host plugin marketplaces to distribute Claude Code extensions across teams and communities.

A plugin marketplace is a catalog that lets you distribute plugins to others. Marketplaces provide centralized discovery, version tracking, automatic updates, and support for multiple source types (git repositories, local paths, and more). This guide shows you how to create your own marketplace to share plugins with your team or community.

Looking to install plugins from an existing marketplace? See Discover and install prebuilt plugins.

Overview

Creating and distributing a marketplace involves:

1. Creating plugins: build one or more plugins with commands, agents, hooks, MCP servers, or LSP servers. This guide assumes you already have plugins to distribute; see Create plugins for details on how to create them.
2. Creating a marketplace file: define a marketplace.json that lists your plugins and where to find them (see Create the marketplace file).
3. Host the marketplace: push to GitHub, GitLab, or another git host (see Host and distribute marketplaces).
4. Share with users: users add your marketplace with /plugin marketplace add and install individual plugins (see Discover and install plugins).

Once your marketplace is live, you can update it by pushing changes to your repository. Users refresh their local copy with /plugin marketplace update.

Walkthrough: create a local marketplace

This example creates a marketplace with one plugin: a /review skill for code reviews. You'll create the directory structure, add a skill, create the plugin manifest and marketplace catalog, then install and test it.

mkdir -p my-marketplace/.claude-plugin
mkdir -p my-marketplace/plugins/review-plugin/.claude-plugin
mkdir -p my-marketplace/plugins/review-plugin/skills/review

---
description: Review code for bugs, security, and performance
disable-model-invocation: true
---

Review the code I've selected or the recent changes for:
- Potential bugs or edge cases
- Security concerns
- Performance issues
- Readability improvements

Be concise and actionable.

{
"name": "review-plugin",
"description": "Adds a /review skill for quick code reviews",
"version": "1.0.0"
}

{
"name": "my-plugins",
"owner": {
"name": "Your Name"
},
"plugins": [
{
"name": "review-plugin",
"source": "./plugins/review-plugin",
"description": "Adds a /review skill for quick code reviews"
}
]
}

/plugin marketplace add ./my-marketplace
/plugin install review-plugin@my-plugins

/review

To learn more about what plugins can do, including hooks, agents, MCP servers, and LSP servers, see Plugins.

Create the marketplace file

Create .claude-plugin/marketplace.json in your repository root. This file defines your marketplace's name, owner information, and a list of plugins with their sources.

Each plugin entry needs at minimum a name and source (where to fetch it from). See the full schema below for all available fields.

{
  "name": "company-tools",
  "owner": {
    "name": "DevTools Team",
    "email": "devtools@example.com"
  },
  "plugins": [
    {
      "name": "code-formatter",
      "source": "./plugins/formatter",
      "description": "Automatic code formatting on save",
      "version": "2.1.0",
      "author": {
        "name": "DevTools Team"
      }
    },
    {
      "name": "deployment-tools",
      "source": {
        "source": "github",
        "repo": "company/deploy-plugin"
      },
      "description": "Deployment automation tools"
    }
  ]
}

Marketplace schema

Required fields

Owner fields

Optional metadata

Plugin entries

Each plugin entry in the plugins array describes a plugin and where to find it. You can include any field from the plugin manifest schema (like description, version, author, commands, hooks, etc.), plus these marketplace-specific fields: source, category, tags, and strict.

Required fields

Optional plugin fields

Standard metadata fields:

Component configuration fields:

Plugin sources

Relative paths

For plugins in the same repository:

{
  "name": "my-plugin",
  "source": "./plugins/my-plugin"
}

GitHub repositories

{
  "name": "github-plugin",
  "source": {
    "source": "github",
    "repo": "owner/plugin-repo"
  }
}

You can pin to a specific branch, tag, or commit:

{
  "name": "github-plugin",
  "source": {
    "source": "github",
    "repo": "owner/plugin-repo",
    "ref": "v2.0.0",
    "sha": "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0"
  }
}

Git repositories

{
  "name": "git-plugin",
  "source": {
    "source": "url",
    "url": "https://gitlab.com/team/plugin.git"
  }
}

You can pin to a specific branch, tag, or commit:

{
  "name": "git-plugin",
  "source": {
    "source": "url",
    "url": "https://gitlab.com/team/plugin.git",
    "ref": "main",
    "sha": "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0"
  }
}

Advanced plugin entries

This example shows a plugin entry using many of the optional fields, including custom paths for commands, agents, hooks, and MCP servers:

{
  "name": "enterprise-tools",
  "source": {
    "source": "github",
    "repo": "company/enterprise-plugin"
  },
  "description": "Enterprise workflow automation tools",
  "version": "2.1.0",
  "author": {
    "name": "Enterprise Team",
    "email": "enterprise@example.com"
  },
  "homepage": "https://docs.example.com/plugins/enterprise-tools",
  "repository": "https://github.com/company/enterprise-plugin",
  "license": "MIT",
  "keywords": ["enterprise", "workflow", "automation"],
  "category": "productivity",
  "commands": [
    "./commands/core/",
    "./commands/enterprise/",
    "./commands/experimental/preview.md"
  ],
  "agents": ["./agents/security-reviewer.md", "./agents/compliance-checker.md"],
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "Write|Edit",
        "hooks": [
          {
            "type": "command",
            "command": "${CLAUDE_PLUGIN_ROOT}/scripts/validate.sh"
          }
        ]
      }
    ]
  },
  "mcpServers": {
    "enterprise-db": {
      "command": "${CLAUDE_PLUGIN_ROOT}/servers/db-server",
      "args": ["--config", "${CLAUDE_PLUGIN_ROOT}/config.json"]
    }
  },
  "strict": false
}

Key things to notice:

• commands and agents: You can specify multiple directories or individual files. Paths are relative to the plugin root.
• ${CLAUDE_PLUGIN_ROOT}: Use this variable in hooks and MCP server configs to reference files within the plugin's installation directory. This is necessary because plugins are copied to a cache location when installed.
• strict: false: Since this is set to false, the plugin doesn't need its own plugin.json. The marketplace entry defines everything.

Host and distribute marketplaces

Host on GitHub (recommended)

GitHub provides the easiest distribution method:

1. Create a repository: Set up a new repository for your marketplace
2. Add marketplace file: Create .claude-plugin/marketplace.json with your plugin definitions
3. Share with teams: Users add your marketplace with /plugin marketplace add owner/repo

Benefits: Built-in version control, issue tracking, and team collaboration features.

Host on other git services

Any git hosting service works, such as GitLab, Bitbucket, and self-hosted servers. Users add with the full repository URL:

/plugin marketplace add https://gitlab.com/company/plugins.git

Private repositories

Claude Code supports installing plugins from private repositories. For manual installation and updates, Claude Code uses your existing git credential helpers. If git clone works for a private repository in your terminal, it works in Claude Code too. Common credential helpers include gh auth login for GitHub, macOS Keychain, and git-credential-store.

Background auto-updates run at startup without credential helpers, since interactive prompts would block Claude Code from starting. To enable auto-updates for private marketplaces, set the appropriate authentication token in your environment:

Set the token in your shell configuration (for example, .bashrc, .zshrc) or pass it when running Claude Code:

export GITHUB_TOKEN=ghp_xxxxxxxxxxxxxxxxxxxx

Test locally before distribution

Test your marketplace locally before sharing:

/plugin marketplace add ./my-local-marketplace
/plugin install test-plugin@my-local-marketplace

For the full range of add commands (GitHub, Git URLs, local paths, remote URLs), see Add marketplaces.

Require marketplaces for your team

You can configure your repository so team members are automatically prompted to install your marketplace when they trust the project folder. Add your marketplace to .claude/settings.json:

{
  "extraKnownMarketplaces": {
    "company-tools": {
      "source": {
        "source": "github",
        "repo": "your-org/claude-plugins"
      }
    }
  }
}

You can also specify which plugins should be enabled by default:

{
  "enabledPlugins": {
    "code-formatter@company-tools": true,
    "deployment-tools@company-tools": true
  }
}

For full configuration options, see Plugin settings.

Managed marketplace restrictions

For organizations requiring strict control over plugin sources, administrators can restrict which plugin marketplaces users are allowed to add using the strictKnownMarketplaces setting in managed settings.

When strictKnownMarketplaces is configured in managed settings, the restriction behavior depends on the value:

Common configurations

Disable all marketplace additions:

{
  "strictKnownMarketplaces": []
}

Allow specific marketplaces only:

{
  "strictKnownMarketplaces": [
    {
      "source": "github",
      "repo": "acme-corp/approved-plugins"
    },
    {
      "source": "github",
      "repo": "acme-corp/security-tools",
      "ref": "v2.0"
    },
    {
      "source": "url",
      "url": "https://plugins.example.com/marketplace.json"
    }
  ]
}

Allow all marketplaces from an internal git server using regex pattern matching:

{
  "strictKnownMarketplaces": [
    {
      "source": "hostPattern",
      "hostPattern": "^github\\.example\\.com$"
    }
  ]
}

How restrictions work

Restrictions are validated early in the plugin installation process, before any network requests or filesystem operations occur. This prevents unauthorized marketplace access attempts.

The allowlist uses exact matching for most source types. For a marketplace to be allowed, all specified fields must match exactly:

• For GitHub sources: repo is required, and ref or path must also match if specified in the allowlist
• For URL sources: the full URL must match exactly
• For hostPattern sources: the marketplace host is matched against the regex pattern

Because strictKnownMarketplaces is set in managed settings, individual users and project configurations cannot override these restrictions.

For complete configuration details including all supported source types and comparison with extraKnownMarketplaces, see the strictKnownMarketplaces reference.

Validation and testing

Test your marketplace before sharing.

Validate your marketplace JSON syntax:

claude plugin validate .

Or from within Claude Code:

/plugin validate .

Add the marketplace for testing:

/plugin marketplace add ./path/to/marketplace

Install a test plugin to verify everything works:

/plugin install test-plugin@marketplace-name

For complete plugin testing workflows, see Test your plugins locally. For technical troubleshooting, see Plugins reference.

Troubleshooting

Marketplace not loading

Symptoms: Can't add marketplace or see plugins from it

Solutions:

• Verify the marketplace URL is accessible
• Check that .claude-plugin/marketplace.json exists at the specified path
• Ensure JSON syntax is valid using claude plugin validate or /plugin validate
• For private repositories, confirm you have access permissions

Marketplace validation errors

Run claude plugin validate . or /plugin validate . from your marketplace directory to check for issues. Common errors:

Warnings (non-blocking):

• Marketplace has no plugins defined: add at least one plugin to the plugins array
• No marketplace description provided: add metadata.description to help users understand your marketplace
• Plugin "x" uses npm source which is not yet fully implemented: use github or local path sources instead

Plugin installation failures

Symptoms: Marketplace appears but plugin installation fails

Solutions:

• Verify plugin source URLs are accessible
• Check that plugin directories contain required files
• For GitHub sources, ensure repositories are public or you have access
• Test plugin sources manually by cloning/downloading

Private repository authentication fails

Symptoms: Authentication errors when installing plugins from private repositories

Solutions:

For manual installation and updates:

• Verify you're authenticated with your git provider (for example, run gh auth status for GitHub)
• Check that your credential helper is configured correctly: git config --global credential.helper
• Try cloning the repository manually to verify your credentials work

For background auto-updates:

• Set the appropriate token in your environment: echo $GITHUB_TOKEN
• Check that the token has the required permissions (read access to the repository)
• For GitHub, ensure the token has the repo scope for private repositories
• For GitLab, ensure the token has at least read_repository scope
• Verify the token hasn't expired

Plugins with relative paths fail in URL-based marketplaces

Symptoms: Added a marketplace via URL (such as https://example.com/marketplace.json), but plugins with relative path sources like "./plugins/my-plugin" fail to install with "path not found" errors.

Cause: URL-based marketplaces only download the marketplace.json file itself. They do not download plugin files from the server. Relative paths in the marketplace entry reference files on the remote server that were not downloaded.

Solutions:

• Use external sources: Change plugin entries to use GitHub, npm, or git URL sources instead of relative paths:

  { "name": "my-plugin", "source": { "source": "github", "repo": "owner/repo" } }
  

• Use a Git-based marketplace: Host your marketplace in a Git repository and add it with the git URL. Git-based marketplaces clone the entire repository, making relative paths work correctly.

Files not found after installation

Symptoms: Plugin installs but references to files fail, especially files outside the plugin directory

Cause: Plugins are copied to a cache directory rather than used in-place. Paths that reference files outside the plugin's directory (such as ../shared-utils) won't work because those files aren't copied.

Solutions: See Plugin caching and file resolution for workarounds including symlinks and directory restructuring.

For additional debugging tools and common issues, see Debugging and development tools.

See also

• Discover and install prebuilt plugins - Installing plugins from existing marketplaces
• Plugins - Creating your own plugins
• Plugins reference - Complete technical specifications and schemas
• Plugin settings - Plugin configuration options
• strictKnownMarketplaces reference - Managed marketplace restrictions