An MCP server that provides full text search for code declarations. Uses SQLite with FTS5 and universal ctags to index and search functions, classes, structures, enums, and other code elements. Supports all languages that ctags supports including Python, C, Go, C++, JavaScript, Rust, Java, and many others. - Python 3.13 - Universal Ctags 6.2.0 - SQLite with FTS5 support (included in Python 3.13) J
Add this skill
npx mdskills install osinmv/function-lookup-mcpProvides multi-language code declaration search via ctags indexing with clear setup
An MCP server that provides full text search for code declarations. Uses SQLite with FTS5 and universal ctags to index and search functions, classes, structures, enums, and other code elements. Supports all languages that ctags supports including Python, C, Go, C++, JavaScript, Rust, Java, and many others.
git clone git@github.com:osinmv/function-lookup-mcp.git
cd function-lookup-mcp
claude mcp add api-lookup $(pwd)/run.sh -s user
Just ask your coding agent to index your header folder. The indexing process respects your project's .gitignore file to avoid indexing unwanted files. Alternatively, you can generate ctags files manually using universal ctags:
ctags --output-format=json --fields=+Sf --kinds-C=+p -R -f apis/your_api.ctags /path/to/your/headers
Or drop existing ctags files into the apis/ folder and restart the MCP server to update the index.
search_declarations(name: str, offset: int = 0, limit: int = 10) - Search for code declarations by name
list_indexed_apis() - List all indexed API files
list_api_files(api_name: str, offset: int = 0, limit: int = 100) - List all unique file paths for a specific API
list_functions_by_file(file_path: str, offset: int = 0, limit: int = 100) - List all functions found in a specific file
generate_ctags(include_directory: str) - Generate ctags from source files and add to index
Install via CLI
npx mdskills install osinmv/function-lookup-mcpCode Declaration Lookup MCP Server is a free, open-source AI agent skill. An MCP server that provides full text search for code declarations. Uses SQLite with FTS5 and universal ctags to index and search functions, classes, structures, enums, and other code elements. Supports all languages that ctags supports including Python, C, Go, C++, JavaScript, Rust, Java, and many others. - Python 3.13 - Universal Ctags 6.2.0 - SQLite with FTS5 support (included in Python 3.13) J
Install Code Declaration Lookup MCP Server with a single command:
npx mdskills install osinmv/function-lookup-mcpThis downloads the skill files into your project and your AI agent picks them up automatically.
Code Declaration Lookup MCP Server works with Claude Code, Claude Desktop, Cursor, Vscode Copilot, Windsurf, Continue Dev, Gemini Cli, Amp, Roo Code, Goose. Skills use the open SKILL.md format which is compatible with any AI coding agent that reads markdown instructions.