Golf Coach

A golf coach that trains you purely on your stats — round after round, closer to scratch.

Golf Coach logs into Trackman Golf with your own account and turns your stats — course rounds, practice sessions, shot-level launch-monitor data, club gapping, and handicap — into a diagnosis of where you're losing strokes, then hands you a specific practice plan with drills and YouTube links for your next session and grades your progress over time. It ships as an MCP server (the data tools) plus Claude skills (the coaching brain).

What you get

You don't read the charts — you get a coach. Point it at your Trackman data and it:

• Finds where you're actually losing strokes — not "work on your irons," but "your driver has a two-way miss spreading landings across a ~115 m corridor — the speed is real, the face isn't yet."

• Hands you one specific session — clubs, distances, reps, a Trackman target, and a drill with a real YouTube link. Stuck indoors? It has an at-home, no-ball routine too.

• Grades your progress — it saves the plan and checks your next session against it, so you actually know whether it worked.

• Shows you the picture — an animated view of your ball flight, the swing path behind the miss, and how close you are to each target.

A real session diagnosis: what's wrong, why, how close you are to your targets, and exactly what to practice next.

Name note. "Golf Coach" is the product name. The technical ids stay golf-coach (MCP server / plugin) and golf-coach (the published package), so existing installs keep working.

Related MCP server: Race MCP Server

Design boundary

• MCP server = raw data fetch + auth only. No opinions.

• Skills = all the coaching (analysis, plans, drills).

See CLAUDE.md for the full architecture and auth/secret rules.

Install

Pick the path for how you use Claude. Each takes about two minutes, then do the one-time Authentication step.

🖥️ Claude Desktop — one-click (recommended, no terminal)

1. Download golf-coach.mcpb (from the latest release).

2. Open Claude Desktop → Settings → Extensions, drag the file in (or double-click it), and click Install. Leave the token field blank.

3. In a chat, say "log in to Trackman" → a browser window opens → sign in once with your Trackman email + password (Apple / Google sign-in works too). The window stays open until you finish — take your time, it won't close on its own. When you're done, tell Claude and it confirms you're signed in.

4. Ask Claude: "What's my Trackman handicap?"

Nothing to install and no config to edit — Claude Desktop runs everything and opens the sign-in browser for you. (First sign-in may take a moment if it needs to fetch a browser. You may also see an "unsigned extension" note — expected for one installed from a file.)

Platforms: macOS, Linux, and Windows — Claude Desktop runs the server via uv on all three, and the browser sign-in uses Playwright (cross-platform). One caveat on Windows: the local token/data files are protected by your Windows user profile (ACLs) rather than POSIX 0600 modes. The optional cron/launchd auto-refresh script is macOS/Linux only — on Windows use Task Scheduler, or just re-run the in-app "log in to Trackman" when the ~7-day token lapses.

⌨️ Claude Code — plugin (server and coaching skills)

/plugin marketplace add bjornj12/golf-coach
/plugin install golf-coach@golf-coach

Installs the MCP server (run via uvx) and all ten coaching skills.

🔌 Other MCP clients (or Claude Desktop without the extension)

Requires uv (curl -LsSf https://astral.sh/uv/install.sh | sh). Add this to your client's MCP config:

{
  "mcpServers": {
    "golf-coach": { "command": "uvx", "args": ["golf-coach"] }
  }
}

For Claude Desktop's manual config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS), use the absolute path to uvx — e.g. /opt/homebrew/bin/uvx — because the app doesn't inherit your shell PATH. The .mcpb install above avoids this entirely.

Authentication (one-time)

The server needs to sign in to your Trackman account. Trackman has no public login API, so it captures a token from a real signed-in browser session once; it's then cached locally and refreshes itself. Your password is never seen or stored by the tool, and nothing leaves your machine.

Easiest — just ask Claude to log in (Claude Desktop / Claude Code)

Say "log in to Trackman." A browser window opens (an isolated profile, not your normal Chrome); sign in once, at your own pace — the window is driven by a background task, so it stays open until you're done and won't be closed out from under you (even a slow Apple/Google 2FA is fine). When you've finished, tell Claude and it confirms. The token caches at ~/.golf-coach/token.json (mode 0600) and the MCP uses it automatically from then on. No terminal, no token to copy — the extension fetches a browser itself if you don't have one.

Terminal alternative (CLI users)

uv tool install "golf-coach[login]"
golf-coach login              # opens a browser; sign in once
golf-coach login --headless   # silent refresh later (tokens last ~7 days)
scripts/install-refresh-schedule.sh   # optional: auto-refresh twice weekly

Advanced — paste a token

portal.trackmangolf.com → DevTools → Network → a graphql request → copy the Authorization: Bearer … value → paste into the extension's Trackman token field (or set TRACKMAN_TOKEN). Tokens expire after ~7 days, so the sign-in flows above are easier.

Verify it worked

Ask Claude "Am I signed in to Trackman?" — it runs auth(action="status") and replies with your name (never the token).

MCP tools

All tools return raw data only; the skills interpret it.

8 tools. trackman and gamebook each take an action (so the agent picks one tool with a mode rather than many near-identical tools).

Setup: setup — one call returns an always-on coach system prompt (for a Project), the skills as upload-ready files, and per-client steps. There's a matching setup prompt in the picker.

Auth: auth(action: status | login, source?)

Trackman data (read-only): trackman(action: profile | handicap | sessions | session | rounds | clubs | summary) — profile+handicap, handicap history, activity list, one activity in full (incl. shot-level metrics), course rounds, club gapping, activity counts.

Gamebook rounds (local, deterministic): gamebook(action: save | list | get | compare) — on-course rounds ingested from Golf GameBook screenshots, rolling last 5, coverage-aware (only score-per-hole is trusted).

Cross-source synthesis (local, deterministic): synthesize() — aligns Trackman's and GameBook's per-source Findings by skill area (no verdict; see CLAUDE.md's "Sources & normalization").

Session analysis (local, deterministic): session_analysis(action: analyze | get | list)

Training-plan memory: training_plan(action: save | next | list | done | verify)

Visualization: build_visualization (self-contained animated HTML artifact)

See CLAUDE.md for the full table and backing GraphQL.

Skills (coaching brain)

The skills under skills/ are delivered two ways:

• Claude Code: installed automatically with the plugin.

• Any MCP client (incl. Claude Desktop): the server serves them as MCP prompts, so they show up in your client's prompt picker — no separate install.

To check a filmed swing: drop a clip named DATE_CLUB_ACTION.mp4 (e.g. 2026-07-17_driver_grip-reset.mp4) into the project in Claude Code and say "check my swing" — you get an angle-scoped checklist and one swing thought (needs ffmpeg).

(trackman-api-discovery is a project/dev skill and isn't served as a prompt.)

Development

uv venv && uv pip install -e '.[login,dev]'   # [login] = Playwright, [dev] = test/lint tools

golf-coach                       # run the MCP server (stdio)
uv run python scripts/validate.py  # sanity-check stats coverage with your token

uv run pytest        # tests
uv run ruff check    # lint
uv run mypy          # type-check

Releasing (PyPI + MCP Registry + the Desktop .mcpb) is one command — scripts/release.sh patch — see PUBLISHING.md.

License

MIT