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 skills, 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 /quality-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/quality-review-plugin/.claude-plugin
mkdir -p my-marketplace/plugins/quality-review-plugin/skills/quality-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": "quality-review-plugin",
"description": "Adds a /quality-review skill for quick code reviews",
"version": "1.0.0"
}

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

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

/quality-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

Plugin sources tell Claude Code where to fetch each individual plugin listed in your marketplace. These are set in the source field of each plugin entry in marketplace.json.

Once a plugin is cloned or copied into the local machine, it is copied into the local versioned plugin cache at ~/.claude/plugins/cache.

Relative paths

For plugins in the same repository, use a path starting with ./:

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

Paths resolve relative to the marketplace root, which is the directory containing .claude-plugin/. In the example above, ./plugins/my-plugin points to <repo>/plugins/my-plugin, even though marketplace.json lives at <repo>/.claude-plugin/marketplace.json. Do not use ../ to reference paths outside the marketplace root.

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"
  }
}

Git subdirectories

Use git-subdir to point to a plugin that lives inside a subdirectory of a git repository. Claude Code uses a sparse, partial clone to fetch only the subdirectory, minimizing bandwidth for large monorepos.

{
  "name": "my-plugin",
  "source": {
    "source": "git-subdir",
    "url": "https://github.com/acme-corp/monorepo.git",
    "path": "tools/claude-plugin"
  }
}

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

{
  "name": "my-plugin",
  "source": {
    "source": "git-subdir",
    "url": "https://github.com/acme-corp/monorepo.git",
    "path": "tools/claude-plugin",
    "ref": "v2.0.0",
    "sha": "a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0"
  }
}

The url field also accepts a GitHub shorthand (owner/repo) or SSH URLs (git@github.com:owner/repo.git).

npm packages

Plugins distributed as npm packages are installed using npm install. This works with any package on the public npm registry or a private registry your team hosts.

{
  "name": "my-npm-plugin",
  "source": {
    "source": "npm",
    "package": "@acme/claude-plugin"
  }
}

To pin to a specific version, add the version field:

{
  "name": "my-npm-plugin",
  "source": {
    "source": "npm",
    "package": "@acme/claude-plugin",
    "version": "2.1.0"
  }
}

To install from a private or internal registry, add the registry field:

{
  "name": "my-npm-plugin",
  "source": {
    "source": "npm",
    "package": "@acme/claude-plugin",
    "version": "^2.0.0",
    "registry": "https://npm.example.com"
  }
}

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. For dependencies or state that should survive plugin updates, use ${CLAUDE_PLUGIN_DATA} instead.
• strict: false: Since this is set to false, the plugin doesn't need its own plugin.json. The marketplace entry defines everything. See Strict mode below.

Strict mode

The strict field controls whether plugin.json is the authority for component definitions (skills, agents, hooks, MCP servers, output styles).

When to use each mode:

• strict: true: the plugin has its own plugin.json and manages its own components. The marketplace entry can add extra skills or hooks on top. This is the default and works for most plugins.
• strict: false: the marketplace operator wants full control. The plugin repo provides raw files, and the marketplace entry defines which of those files are exposed as skills, agents, hooks, etc. Useful when the marketplace restructures or curates a plugin's components differently than the plugin author intended.

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.

Pre-populate plugins for containers

For container images and CI environments, you can pre-populate a plugins directory at build time so Claude Code starts with marketplaces and plugins already available, without cloning anything at runtime. Set the CLAUDE_CODE_PLUGIN_SEED_DIR environment variable to point at this directory.

To layer multiple seed directories, separate paths with : on Unix or ; on Windows. Claude Code searches each directory in order, and the first seed that contains a given marketplace or plugin cache wins.

The seed directory mirrors the structure of ~/.claude/plugins:

$CLAUDE_CODE_PLUGIN_SEED_DIR/
  known_marketplaces.json
  marketplaces/<name>/...
  cache/<marketplace>/<plugin>/<version>/...

To build a seed directory, run Claude Code once during image build, install the plugins you need, then copy the resulting ~/.claude/plugins directory into your image and point CLAUDE_CODE_PLUGIN_SEED_DIR at it.

To skip the copy step, set CLAUDE_CODE_PLUGIN_CACHE_DIR to your target seed path during the build so plugins install directly there:

CLAUDE_CODE_PLUGIN_CACHE_DIR=/opt/claude-seed claude plugin marketplace add your-org/plugins
CLAUDE_CODE_PLUGIN_CACHE_DIR=/opt/claude-seed claude plugin install my-tool@your-plugins

Then set CLAUDE_CODE_PLUGIN_SEED_DIR=/opt/claude-seed in your container's runtime environment so Claude Code reads from the seed on startup.

At startup, Claude Code registers marketplaces found in the seed's known_marketplaces.json into the primary configuration, and uses plugin caches found under cache/ in place without re-cloning. This works in both interactive mode and non-interactive mode with the -p flag.

Behavior details:

• Read-only: the seed directory is never written to. Auto-updates are disabled for seed marketplaces since git pull would fail on a read-only filesystem.
• Seed entries take precedence: marketplaces declared in the seed overwrite any matching entries in the user's configuration on each startup. To opt out of a seed plugin, use /plugin disable rather than removing the marketplace.
• Path resolution: Claude Code locates marketplace content by probing $CLAUDE_CODE_PLUGIN_SEED_DIR/marketplaces/<name>/ at runtime, not by trusting paths stored inside the seed's JSON. This means the seed works correctly even when mounted at a different path than where it was built.
• Mutation is blocked: running /plugin marketplace remove or /plugin marketplace update against a seed-managed marketplace fails with guidance to ask your administrator to update the seed image.
• Composes with settings: if extraKnownMarketplaces or enabledPlugins declare a marketplace that already exists in the seed, Claude Code uses the seed copy instead of cloning.

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 on the host. This is the recommended approach for GitHub Enterprise Server or self-hosted GitLab instances:

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

Allow filesystem-based marketplaces from a specific directory using regex pattern matching on the path:

{
  "strictKnownMarketplaces": [
    {
      "source": "pathPattern",
      "pathPattern": "^/opt/approved/"
    }
  ]
}

Use ".*" as the pathPattern to allow any filesystem path while still controlling network sources with hostPattern.

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
• For pathPattern sources: the marketplace's filesystem path 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.

Version resolution and release channels

Plugin versions determine cache paths and update detection. You can specify the version in the plugin manifest (plugin.json) or in the marketplace entry (marketplace.json).

Set up release channels

To support "stable" and "latest" release channels for your plugins, you can set up two marketplaces that point to different refs or SHAs of the same repo. You can then assign the two marketplaces to different user groups through managed settings.

Example

{
  "name": "stable-tools",
  "plugins": [
    {
      "name": "code-formatter",
      "source": {
        "source": "github",
        "repo": "acme-corp/code-formatter",
        "ref": "stable"
      }
    }
  ]
}

{
  "name": "latest-tools",
  "plugins": [
    {
      "name": "code-formatter",
      "source": {
        "source": "github",
        "repo": "acme-corp/code-formatter",
        "ref": "latest"
      }
    }
  ]
}

Assign channels to user groups

Assign each marketplace to the appropriate user group through managed settings. For example, the stable group receives:

{
  "extraKnownMarketplaces": {
    "stable-tools": {
      "source": {
        "source": "github",
        "repo": "acme-corp/stable-tools"
      }
    }
  }
}

The early-access group receives latest-tools instead:

{
  "extraKnownMarketplaces": {
    "latest-tools": {
      "source": {
        "source": "github",
        "repo": "acme-corp/latest-tools"
      }
    }
  }
}

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.

Manage marketplaces from the CLI

Claude Code provides non-interactive claude plugin marketplace subcommands for scripting and automation. These are equivalent to the /plugin marketplace commands available inside an interactive session.

Plugin marketplace add

Add a marketplace from a GitHub repository, git URL, remote URL, or local path.

claude plugin marketplace add <source> [options]

Arguments:

• <source>: GitHub owner/repo shorthand, git URL, remote URL to a marketplace.json file, or local directory path. To pin to a branch or tag, append @ref to the GitHub shorthand or #ref to a git URL

Options:

Add a marketplace from GitHub using owner/repo shorthand:

claude plugin marketplace add acme-corp/claude-plugins

Pin to a specific branch or tag with @ref:

claude plugin marketplace add acme-corp/claude-plugins@v2.0

Add from a git URL on a non-GitHub host:

claude plugin marketplace add https://gitlab.example.com/team/plugins.git

Add from a remote URL that serves the marketplace.json file directly:

claude plugin marketplace add https://example.com/marketplace.json

Add from a local directory for testing:

claude plugin marketplace add ./my-marketplace

Declare the marketplace at project scope so it is shared with your team via .claude/settings.json:

claude plugin marketplace add acme-corp/claude-plugins --scope project

For a monorepo, limit the checkout to the directories that contain plugin content:

claude plugin marketplace add acme-corp/monorepo --sparse .claude-plugin plugins

Plugin marketplace list

List all configured marketplaces.

claude plugin marketplace list [options]

Options:

Plugin marketplace remove

Remove a configured marketplace. The alias rm is also accepted.

claude plugin marketplace remove <name>

Arguments:

• <name>: marketplace name to remove, as shown by claude plugin marketplace list. This is the name from marketplace.json, not the source you passed to add

Plugin marketplace update

Refresh marketplaces from their sources to retrieve new plugins and version changes.

claude plugin marketplace update [name]

Arguments:

• [name]: marketplace name to update, as shown by claude plugin marketplace list. Updates all marketplaces if omitted

Both remove and update fail when run against a seed-managed marketplace, which is read-only. When updating all marketplaces, seed-managed entries are skipped and other marketplaces still update. To change seed-provided plugins, ask your administrator to update the seed image. See Pre-populate plugins for containers.

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 and frontmatter is well-formed 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. The validator checks plugin.json, skill/agent/command frontmatter, and hooks/hooks.json for syntax and schema errors. 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 name "x" is not kebab-case: the plugin name contains uppercase letters, spaces, or special characters. Rename to lowercase letters, digits, and hyphens only (for example, my-plugin). Claude Code accepts other forms, but the Claude.ai marketplace sync rejects them.

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

Marketplace updates fail in offline environments

Symptoms: Marketplace git pull fails and Claude Code wipes the existing cache, causing plugins to become unavailable.

Cause: By default, when a git pull fails, Claude Code removes the stale clone and attempts to re-clone. In offline or airgapped environments, re-cloning fails the same way, leaving the marketplace directory empty.

Solution: Set CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE=1 to keep the existing cache when the pull fails instead of wiping it:

export CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE=1

With this variable set, Claude Code retains the stale marketplace clone on git pull failure and continues using the last-known-good state. For fully offline deployments where the repository will never be reachable, use CLAUDE_CODE_PLUGIN_SEED_DIR to pre-populate the plugins directory at build time instead.

Git operations time out

Symptoms: Plugin installation or marketplace updates fail with a timeout error like "Git clone timed out after 120s" or "Git pull timed out after 120s".

Cause: Claude Code uses a 120-second timeout for all git operations, including cloning plugin repositories and pulling marketplace updates. Large repositories or slow network connections may exceed this limit.

Solution: Increase the timeout using the CLAUDE_CODE_PLUGIN_GIT_TIMEOUT_MS environment variable. The value is in milliseconds:

export CLAUDE_CODE_PLUGIN_GIT_TIMEOUT_MS=300000  # 5 minutes

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