course-mcp

course-mcp is a local Python MCP server for referencing course files from a configured classes directory.

The project is currently focused on listing available courses and building the service layer needed to browse course files safely.

Current Features

• Loads ROOT_DIR from .env or the process environment.
• Restricts file access to paths inside ROOT_DIR.
• Provides a FileService for safe file reads.
• Provides a CourseService for course/file listing.
• Exposes an MCP tool:
  • list-courses: lists the top-level course directories under ROOT_DIR.
  • list-course-files: lists the direct files inside a course directory.

Project Layout

src/course_mcp/
  server.py              MCP server boundary
  config/                environment/config loading
  services/
    file_service.py      safe filesystem access
    course_service.py    course-oriented operations
  models/                simple data models
tests/                   pytest tests
skills/                  project-specific agent skills

Configuration

Create a .env file at the project root:

ROOT_DIR="/Users/markseeliger/Desktop/Classes/UMD"

ROOT_DIR must point to an existing directory. Each direct child directory is treated as a course.

You can also pass ROOT_DIR directly through the environment instead of using .env.

Run Locally

From this project directory:

uv run course-mcp

Because MCP servers run over stdio, they are usually launched by an MCP client rather than run directly by hand.

Install In Codex

Register the server with Codex:

codex mcp add course-mcp \
  --env ROOT_DIR=/Users/markseeliger/Desktop/Classes/UMD \
  -- uv --directory /Users/markseeliger/Desktop/Coding/create-python-server/course_mcp run course-mcp

Verify the registration:

codex mcp get course-mcp

Or refresh the registration with the project script:

ROOT_DIR=/Users/markseeliger/Desktop/Classes/UMD ./scripts/update_mcp_server.sh

If you change MCP tools, restart Codex or start a new Codex session so the tool list is reloaded.

Development

Run the test suite:

uv run pytest

Run a compile check:

python3 -m compileall src/course_mcp tests

Debug with MCP Inspector:

npx @modelcontextprotocol/inspector uv --directory /Users/markseeliger/Desktop/Coding/create-python-server/course_mcp run course-mcp