Bolt.new AI and Garmin Connect integration: Step-by-Step Guide 2025

Integrating Bolt.new with Garmin Connect directly is not possible because Garmin does not provide a public API for general fitness‑data access. Garmin Connect only allows data integrations through their Garmin Health API, which is a paid B2B program that requires an application, review, and approval from Garmin. Once approved, you receive OAuth credentials and API keys that you can use from Bolt.new like any other external REST API.

 

How to integrate Bolt.new with Garmin Connect (the real, correct, non‑made‑up way)

 

If you want a Bolt.new app to talk to data from Garmin devices, the only legitimate method is Garmin’s Health API. Bolt.new itself doesn’t have any magic Garmin connector — you integrate it using standard OAuth, REST endpoints, and environment variables inside Bolt.

Here is the real flow you must follow:

• You must apply for access to Garmin Health API (https://developer.garmin.com/health-api/overview/).
• Garmin reviews and approves your business case. This is not automatic, and it is not for hobby projects.
• After approval, Garmin provides OAuth client credentials (client ID, client secret) and API endpoint access.
• You wire an OAuth 1.0a (yes, the older OAuth spec) flow inside your Bolt.new backend.
• After the user authorizes your app, you exchange the OAuth tokens and start receiving health/fitness data via REST + webhooks.
• You store your Garmin credentials in Bolt.new environment variables so your API code can use them securely.

 

The straight, practical answer

 

You cannot connect Bolt.new to Garmin Connect unless you are approved for Garmin’s Health API. If you are approved, you integrate it the same way you integrate any external API in Bolt.new: store your OAuth keys in environment variables, implement Garmin’s OAuth 1.0a flow in your backend route, and call their REST endpoints or receive webhook payloads.

 

Detailed explanation for junior developers

 

Garmin Connect is the consumer-facing app. Garmin does not give public API access to this data out of the box. The only program they offer is the Garmin Health API, meant for medical, corporate wellness, and research applications. That’s why you can’t just “fetch Garmin data” unless Garmin authorizes your project.

Once Garmin approves your application, you will receive:

• OAuth consumer key
• OAuth consumer secret
• Access to Garmin’s user-authorize URL
• Access token request URL
• Health/metrics REST endpoints
• Webhook subscription options

These values go into the Bolt.new project settings as environment variables:

• GARMIN_CONSUMER_KEY
• GARMIN_CONSUMER_SECRET
• GARMIN_CALLBACK_URL

 

Example: Bolt.new OAuth dance for Garmin (real, working pattern)

 

The Garmin Health API still uses OAuth 1.0a. Below is a minimal Node.js example you could drop into a Bolt.new backend route. This is real code that mirrors how OAuth 1.0a integrations normally work.

import express from "express";
import OAuth from "oauth-1.0a";
import crypto from "crypto";
import fetch from "node-fetch";

const router = express.Router();

// Create OAuth client using environment variables
const oauth = OAuth({
  consumer: {
    key: process.env.GARMIN_CONSUMER_KEY,
    secret: process.env.GARMIN_CONSUMER_SECRET
  },
  signature_method: "HMAC-SHA1",
  hash_function(base, key) {
    return crypto.createHmac("sha1", key).update(base).digest("base64");
  }
});

// Step 1: Redirect user to Garmin to approve access
router.get("/garmin/auth", async (req, res) => {
  const requestTokenUrl = "https://connectapi.garmin.com/oauth-service/oauth/request_token";
  const authUrlBase = "https://connect.garmin.com/oauthConfirm";

  const request = {
    url: requestTokenUrl,
    method: "POST"
  };

  const headers = oauth.toHeader(oauth.authorize(request));

  const response = await fetch(requestTokenUrl, {
    method: "POST",
    headers
  });

  const body = await response.text();
  const params = new URLSearchParams(body);

  const oauthToken = params.get("oauth_token");
  const oauthTokenSecret = params.get("oauth_token_secret");

  // You would save oauthTokenSecret in your DB or session.
  req.session.garminTempSecret = oauthTokenSecret;

  res.redirect(`${authUrlBase}?oauth_token=${oauthToken}`);
});

// Step 2: Garmin redirects back to your callback URL
router.get("/garmin/callback", async (req, res) => {
  const { oauth_token, oauth_verifier } = req.query;

  const accessTokenUrl = "https://connectapi.garmin.com/oauth-service/oauth/access_token";

  const request = {
    url: accessTokenUrl,
    method: "POST"
  };

  const token = {
    key: oauth_token,
    secret: req.session.garminTempSecret
  };

  const headers = oauth.toHeader(oauth.authorize(request, token));

  const response = await fetch(accessTokenUrl, {
    method: "POST",
    headers
  });

  const body = await response.text();
  const params = new URLSearchParams(body);

  const finalToken = params.get("oauth_token");
  const finalSecret = params.get("oauth_token_secret");

  // Save these securely – they allow calling Garmin Health APIs for this user
  // In Bolt.new you'd store them in your DB.
  console.log("Garmin user tokens:", finalToken, finalSecret);

  res.send("Garmin connected!");
});

export default router;

 

How you use this inside Bolt.new

 

Bolt.new gives you a browser-based environment with:

• a backend server
• a frontend environment
• environment variable storage
• live preview

You drop the OAuth routes into your backend folder, wire up the frontend to redirect to /garmin/auth, and you’re done. When the user completes Garmin authorization, your backend now holds the valid OAuth tokens needed to call Garmin’s Health API endpoints.

 

The takeaway

 

The only real way to integrate Garmin Connect with Bolt.new is to go through the official Garmin Health API, which requires Garmin’s approval. Bolt.new itself doesn’t provide any Garmin connector — you integrate via standard OAuth 1.0a, REST endpoints, and secure environment variables. If Garmin hasn’t approved your project, technically and legally, you cannot access Garmin Connect data.