Helm Package README MCP Server

An MCP (Model Context Protocol) server that enables AI assistants to fetch comprehensive information about Helm charts from Artifact Hub, including README content, chart metadata, and search functionality.

Features

• Chart README Retrieval: Fetch formatted README content with usage examples from Helm charts hosted on Artifact Hub
• Chart Information: Get comprehensive chart metadata including dependencies, versions, maintainers, and repository information
• Chart Search: Search Artifact Hub with advanced filtering by repository, kind, and relevance
• Smart Caching: Intelligent caching system to optimize API usage and improve response times
• GitHub Integration: Seamless integration with GitHub API for enhanced README fetching when charts link to GitHub repositories
• Error Handling: Robust error handling with automatic retry logic and fallback strategies

MCP Client Configuration

Add this server to your MCP client configuration:

{
  "mcpServers": {
    "helm-package-readme": {
      "command": "npx",
      "args": ["helm-package-readme-mcp-server"],
      "env": {
        "GITHUB_TOKEN": "your_github_token_here"
      }
    }
  }
}

Note: The GITHUB_TOKEN is optional but recommended for higher API rate limits when fetching README content from GitHub.

Available Tools

get_package_readme

Retrieves comprehensive README content and usage examples for Helm charts.

Parameters:

{
  "package_name": "bitnami/nginx",
  "version": "latest",
  "include_examples": true
}

• package_name (string, required): Helm chart name in repository/chart format
• version (string, optional): Specific chart version or "latest" (default: "latest")
• include_examples (boolean, optional): Include usage examples and code snippets (default: true)

Returns: Formatted README content with installation instructions, usage examples, and configuration documentation.

get_package_info

Fetches detailed chart metadata, dependencies, and statistics from Artifact Hub.

Parameters:

{
  "package_name": "stable/mysql",
  "include_dependencies": true,
  "include_dev_dependencies": false
}

• package_name (string, required): Helm chart name
• include_dependencies (boolean, optional): Include chart dependencies (default: true)
• include_dev_dependencies (boolean, optional): Include development dependencies (default: false)

Returns: Chart metadata including version info, maintainers, license, repository info, and dependency tree.

search_packages

Searches Artifact Hub for charts with advanced filtering capabilities.

Parameters:

{
  "query": "nginx web server",
  "limit": 20,
  "quality": 0.8
}

• query (string, required): Search terms (chart name, description, keywords)
• limit (number, optional): Maximum number of results to return (default: 20, max: 250)
• quality (number, optional): Minimum quality score filter (0-1)

Returns: List of matching charts with names, descriptions, repository info, and relevance scores.

Error Handling

The server handles common error scenarios gracefully:

• Chart not found: Returns clear error messages with chart name suggestions
• Rate limiting: Implements automatic retry with exponential backoff
• Network timeouts: Configurable timeout with retry logic
• Invalid chart names: Validates chart name format and provides guidance
• GitHub API failures: Fallback strategies when GitHub integration fails

License

MIT