Suunto MCP

Ask Claude anything about your training. Suunto MCP connects your Suunto watch data to Claude so you can just talk to your data instead of clicking through dashboards.

Built by a Suunto user who wanted to ask "how was my last long run?" and get a real answer with numbers — and to feed live training data into a personal AI coach.

🏃 For regular Suunto users: Suunto's API docs say access is for commercial partners only — that's not the full picture. Private users get access too. It just takes 3–4 weeks for approval after you apply. Submit, wait, enjoy. Don't let that disclaimer stop you. ✅

What you can do

Once it's set up, just ask:

• "How many kilometers did I run this month?"
• "Compare my last three long runs — has my heart-rate drift improved?"
• "Pull the GPX of yesterday's trail run and write a short journal entry."
• "What's my average resting HR trend over the last two weeks?"
• "Summarize my training week in the style of a coaching report."
• "I've been feeling off — how do my recovery scores compare to last month?"
• "Find every workout where I averaged above 160 bpm."
• "Which of my runs this year had the most elevation?"

Claude figures out what data to pull. You just ask.

🤖 Don't want to do this yourself? Let Claude Code install it

If you already have Claude Code, you don't need to run a single terminal command. Just open it and say:

"Please install and set up suunto-mcp from https://github.com/googlarz/suunto-mcp"

Claude Code will clone the repo, run all the install commands, walk you through the apizone signup step by step, and add everything to your Claude Desktop config — on its own. That's exactly how this project's author set it up: no manual terminal work.

You'll still need to create the apizone account and click Authorize yourself (Claude can't enter your passwords), but it'll tell you exactly what to do and when.

If you want to do it manually, keep reading.

What you need

Before starting, make sure you have:

• A Suunto watch synced to the Suunto app (any modern model — Race, Vertical, 9 Peak, 5 Peak, Ocean, etc.)
• Claude Desktop (or another MCP-compatible AI app)
• Node.js — free, download here, choose the "LTS" version
• Git — free, download here
• ~5 min to submit + 3–4 week wait for Suunto approval + ~15 min to install

Once it's done, you never redo it.

Setup

The setup has three parts:

1. Register with Suunto's developer portal — tells Suunto your app is allowed to read your data
2. Install and configure — gets the software running on your computer
3. Connect to Claude — lets the AI find and use it

Part 1: Register with Suunto's developer portal (~5 min to submit, then wait 3–4 weeks)

Suunto has a free developer portal called apizone where you register apps that can access your data. You'll create an account, subscribe to the data plan, and register a small "app" — don't worry, there's nothing to build, it's just a name and a password you make up.

Step 1: Create your apizone account

Go to apizone.suunto.com and sign up or sign in.

Use the same email you use for the Suunto app. If you have a Sports Tracker account, that works too — it's the same login system.

Step 2: Subscribe to the Developer API

After signing in, follow the How to start guide — it walks you through subscribing to the Developer API. This is free and gives you access to your workout history.

Heads up: Suunto's website states that API access is only for commercial partners — ignore that. Private users do get access, it just takes 3–4 weeks for the subscription to be approved. Submit it and wait. It will come through.

You may see other products like "Sleep API", "Recovery API", "Daily Activity API". Skip those for now — the Developer API is enough to get started. You can add the others later if you want sleep and recovery data in Claude.

⏳ Stop here and wait. Once you've subscribed, Suunto needs to approve your request. This takes 3–4 weeks. You'll get an email when it's done. Come back to Steps 3–4 only after your subscription shows as Active in your apizone profile.

Step 3: Register your app (do this after approval)

You're going to tell Suunto: "I have a small program, here's its name and a secret password — please let it read my data."

1. Go to your apizone profile page

2. Scroll down to OAuth application settings

3. Fill in the form:

   Field	What to enter
   App name	suunto-mcp (or anything you like)
   Client secret	Make up a unique password — something only you'd know, e.g. alice-suunto-2026 with your own name. Write it down. Don't use this exact example.
   Redirect URI	http://localhost:8421/callback — copy this exactly

4. Click Save

After saving, the form shows a Client ID — a long code that Suunto generated for you. Copy it.

What are these three things? — Client ID: your app's username, generated by Suunto — Client Secret: your app's password, chosen by you — Redirect URI: where Suunto sends you back after you approve access — must match exactly, typos break it

The Client Secret is never shown again after you save. If you forget it, just set a new one in the same form.

Step 4: Get your subscription key (do this after approval)

The subscription key is a second passcode that goes on every data request. Here's how to find it:

1. Still on the apizone profile page
2. Scroll to the Subscriptions section
3. Your Developer API subscription is listed there. Next to it you'll see a Primary Key — click the button next to it to reveal it, then copy the key.

Save all three values before continuing — you'll need them in Part 2:

• Client ID (from the OAuth app form above)
• Client Secret (the password you made up)
• Subscription Key (from the Subscriptions section)

Part 2: Install and configure (~10 min, after Suunto approves you)

Step 5: Download the code

Open Terminal on Mac (press ⌘Space and type "Terminal") or Command Prompt on Windows. Then run these commands one at a time:

git clone https://github.com/googlarz/suunto-mcp
cd suunto-mcp
npm install
npm run build

This downloads the code, installs what it needs, and builds it. Takes 1–2 minutes. If you see any errors, check the Troubleshooting section.

Step 6: Add your credentials

You'll create a file called .env in the suunto-mcp folder and put your three values in it.

On Mac:

cp .env.example .env
open -e .env

This copies the template and opens it in TextEdit. Replace each placeholder with your actual values, then save and close.

On Windows:

copy .env.example .env
notepad .env

The file looks like this — replace the parts after the = signs:

SUUNTO_CLIENT_ID=your-client-id-here
SUUNTO_CLIENT_SECRET=your-client-secret-here
SUUNTO_SUBSCRIPTION_KEY=your-subscription-key-here

Save and close the file.

Step 7: Pair your Suunto account

npm run auth

Here's exactly what happens:

① Terminal — you see a long URL printed and the message "Opening Suunto authorization in your browser…"

② Browser opens — Suunto's login page appears. It looks identical to the Suunto app login: email + password fields at the top, then "Sign in with Apple" and "Sign in with Facebook" below. Sign in with whichever you use.

③ Permissions screen — after logging in, a screen appears asking you to approve access for "suunto-mcp". It lists what the app will be able to read (your workouts). Click Authorize.

④ Browser confirmation — the page shows: "Suunto MCP connected. You can close this tab."

⑤ Terminal confirmation — prints: "Paired successfully. Tokens saved."

Done — you won't need to do this again. The connection stays active and renews itself automatically.

Browser didn't open automatically? Copy the long URL from the terminal and paste it into your browser manually.

Step 8: Check everything is working

npm run doctor

This runs a health check. You should see output like:

Suunto MCP — health check

  ✓  Node version             20.18.0 (require ≥ 20)
  ✓  Credentials              client_id, client_secret, subscription_key set
  ✓  Network reachability     reachable
  ✓  Pairing                  paired (user: your-username), token expires in 47 min
  ✓  API probe (workouts)     received 1 workout

If any line shows ✗, the message tells you exactly what to fix. Resolve any issues before moving on.

Part 3: Connect to Claude Desktop (~5 min)

Now you'll tell Claude Desktop where to find Suunto MCP.

Step 9: Open the Claude config file

Open this file in a text editor (create it if it doesn't exist yet):

• Mac: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

Quick way on Mac — run this in Terminal:

mkdir -p ~/Library/Application\ Support/Claude && open -e ~/Library/Application\ Support/Claude/claude_desktop_config.json

Quick way on Windows — run this in Command Prompt:

notepad "%APPDATA%\Claude\claude_desktop_config.json"

(If it asks "file not found — create it?", click Yes.)

Step 10: Add Suunto MCP

First, find the actual path to the suunto-mcp folder. In Terminal, while inside the folder, run:

pwd

It'll print something like /Users/yourname/suunto-mcp. Copy that.

Now paste the following into the config file. Replace /Users/yourname/suunto-mcp with the path you got from pwd, and replace the credential placeholders with your actual values.

If the file already has other servers configured, don't replace the whole file — just add the "suunto" section alongside them. The structure must be valid JSON, so keep all the curly braces balanced. When in doubt, compare your file to the example below.

If the file is empty, paste the whole block as-is.

{
  "mcpServers": {
    "suunto": {
      "command": "node",
      "args": ["/Users/yourname/suunto-mcp/dist/index.js"],
      "env": {
        "SUUNTO_CLIENT_ID": "your-client-id",
        "SUUNTO_CLIENT_SECRET": "your-client-secret",
        "SUUNTO_SUBSCRIPTION_KEY": "your-subscription-key"
      }
    }
  }
}

Save the file.

Step 11: Test it

Quit Claude Desktop and reopen it. Then ask:

"What was my most recent workout?"

If Claude answers with your actual sport, date, and distance — you're all set!

Example conversation

You:    Compare my last three long runs. Has my heart-rate drift improved?

Claude: Looking up your workouts…
        Found 3 runs over 90 minutes in the last 6 weeks:
          • Apr 12 — 22.4 km, 2h09, avg HR 148, last-30min drift +6 bpm
          • Apr 19 — 24.0 km, 2h21, avg HR 144, last-30min drift +4 bpm
          • Apr 26 — 25.1 km, 2h28, avg HR 142, last-30min drift +2 bpm
        Drift is trending down despite slightly longer runs — your aerobic
        base is improving. Pace at the same HR is also ~3 s/km faster.

What data is available

To add sleep, recovery, or daily activity: go back to apizone.suunto.com, find each product, and subscribe. Then run npm run doctor to confirm they're active.

Troubleshooting

Always run npm run doctor first — it pinpoints most problems automatically.

FAQ

Is this safe? Will Suunto lock my account? Suunto built this API specifically for people to connect their own tools — it's explicitly allowed. You're using it exactly as intended.

Is my data leaving my computer? Your data travels directly between your computer and Suunto's servers. Suunto MCP is just the bridge. When Claude asks about your workouts, it goes: Claude → Suunto MCP (on your machine) → Suunto's servers → back. No third-party services see your data.

Which Suunto watches work? Any watch that syncs to the Suunto app: Race, Vertical, 9 Peak Pro, 9 Peak, 5 Peak, Wing, Ocean, and older models. If it appears in your Suunto app, it works here.

Do I need to do anything when I record a new workout? No. Just ask Claude — it always pulls live data from Suunto.

What if I want to disconnect and stop using this? See Disconnecting below. You can fully revoke access in under a minute.

Can I use this with AI apps other than Claude? Yes — anything that supports MCP: Claude Code, Cursor, Windsurf, and others.

My Suunto app username is different from my email — which do I use? Use your email address to sign in to apizone. Your username will appear once you're authenticated.

Privacy

• All data flows directly between your computer and Suunto's servers. No third-party servers, no analytics.
• Your login credentials are stored locally at ~/.suunto-mcp/tokens.json — not uploaded anywhere.
• Suunto shows your connected app as "suunto-mcp" in apizone → profile → Authorized applications. You can revoke it there at any time.
• The AI only sees data it explicitly requests for your question — not your entire history at once.

Disconnecting

To fully remove access:

1. Log in to apizone.suunto.com → profile → Authorized applications → remove suunto-mcp. Suunto immediately stops honoring the connection.
2. Delete local credentials:

   rm -f ~/.suunto-mcp/tokens.json
   

3. Remove the "suunto" block from your Claude config and restart Claude.

Pairs well with health-skill

If you use googlarz/health-skill — a Claude skill for symptom triage and health Q&A — Suunto MCP gives it a live feed of your training, sleep, and recovery data. Together they can answer questions like "given my recovery scores this week, should I keep tomorrow's interval session?" with real numbers.

Advanced

suunto-mcp list-workouts --limit 10
suunto-mcp get-workout <workoutKey>
suunto-mcp export-workout-gpx <workoutKey> > route.gpx
suunto-mcp get-sleep 2026-04-20
suunto-mcp list-recovery --from 2026-04-01 --to 2026-04-30

npm run webhook

SUUNTO_TOKEN_STORAGE=keychain npm install @napi-rs/keyring
SUUNTO_TOKEN_STORAGE=keychain npm run auth

Credits

• Suunto APIzone — for opening their API to everyone
• Model Context Protocol — the standard this speaks
• fit-file-parser — FIT binary decoding

License

MIT — use it, fork it, improve it.