gcontext-mcp 0.1.1

gcontext connector — local MCP bridge: cloud structure, local secret values

mcp-minimal

A single local Python MCP server: a files/folders tree + a secret-name registry in SQLite, plus on-the-fly Python script execution with the local .env injected. Secret VALUES never leave this machine and never enter the database.

Setup

cd apps/mcp-minimal
cp .env.example .env   # fill in your secret values

Add to Claude Code

claude mcp add mcp-minimal -- uv run --directory /ABS/PATH/TO/apps/mcp-minimal python server.py

Tools

• tool_list_dir(path="/"), tool_read_file(path), tool_write_file(path, content), tool_create_folder(path), tool_delete(path)
• tool_list_secrets(), tool_register_secret(name, description), tool_unregister_secret(name), tool_scaffold_env()
• tool_run_script(code) - runs uv run --env-file .env python -c "<code>"

The secret registry

The registry holds secret NAMES + descriptions only — it is for setup and verification, not runtime. It does NOT gate tool_run_script, which injects the whole .env regardless of what's registered.

1. tool_register_secret(name, description) - declare a required secret.
2. tool_scaffold_env() - append blank NAME= lines to .env for any registered secret not yet present, so the user just fills in the values.
3. tool_list_secrets() - shows present_locally per name so you can confirm setup.

How it works

1. Write a file describing a 3rd-party operation and which secret NAMES it needs; declare those names with tool_register_secret.
2. To act, read the file, generate Python, and call tool_run_script.
3. Secret values resolve from the local .env at run time - never stored in the DB.

Security / trust model

tool_run_script runs arbitrary Python locally with your real .env injected — there is no sandbox. It is exactly as trusted as whatever drives the server. Run it on your own machine only; never expose this server remotely.

Script contract

• Read secrets via os.environ["VAR"] - never hardcode, never load_dotenv.
• Use only registered names that show present_locally: true.
• Exit codes: 0 OK, 2 missing secret (KeyError), 1 any other failure.

Config (env vars)

• MCP_MINIMAL_DB - SQLite path (default db.sqlite next to server.py).
• MCP_MINIMAL_ENV_FILE - secret-values file (default .env next to server.py).