Google Fitness API

Name: Fitness API
Brand: Fitness API
Availability: InStock

✓ Official Vendor SpecHealthcareClinical Dataoauth213 EndpointsREST

Install Jentic One Beta

Connect the Fitness API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Fitness API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with Fitness API.

List the data sources connected to a user's Google Fit account

Read raw data points from a specific data source over a time range

Aggregate fitness data into daily or custom buckets via dataset:aggregate

GET STARTED

Start building with Fitness API

Explore with Jentic

View OpenAPI Document

For Agents

Read and write fitness data points, datasets, and workout sessions for the authenticated Google user across heart rate, steps, distance, calories, and other tracked metrics.

Use for: List the data sources connected to my Google Fit account, Get my step count for the past 7 days as daily totals, Aggregate heart rate data into 5-minute buckets, Write a new running session to Google Fit

Not supported: Does not handle clinical or medical records, prescriptions, or HIPAA-regulated data - use the Cloud Healthcare API for clinical workloads; this API covers consumer fitness tracking only.

Use Cases

Patterns agents use Fitness API for, with concrete tasks.

★ Pull Daily Activity Summaries into a Health Dashboard

Wellness apps want to show a user a daily summary of steps, distance, calories, and active minutes. The Fitness API's dataset:aggregate endpoint groups raw data points from connected sources into daily buckets in a single call, so the dashboard can fetch a week of summary data without paginating through raw points. The aggregation respects the user's connected device sources.

Call POST /me/dataset:aggregate with a 7-day window and bucketByTime of 86400000 ms to fetch daily step counts for the user.

Log Workouts from a Coaching App

Coaching and training apps capture sessions on their own clients (a treadmill run, a yoga class) and need to write them back to Google Fit so the data is available across all the user's apps. The Fitness API supports session create and update, plus matching data point writes against an app-owned data source. Sessions appear in the Fit timeline with the app's name and activity type.

Call PUT /me/sessions/{sessionId} with activityType for running and the start and end times, and write matching heart rate data points to a custom dataSource.

Sync Data on a Schedule

Background services that mirror Google Fit data into a user's account on another platform need to detect what changed since the last sync. The dataPointChanges endpoint returns inserted and deleted points since a token, allowing efficient incremental sync without rereading the full history.

Call GET /me/dataSources/{dataSourceId}/dataPointChanges with the previous pageToken and persist the new points and deletes to the local store.

Agent-Mediated Wellness Reports

An AI wellness assistant can summarise a user's recent activity by querying the Fitness API through Jentic. The agent searches for the aggregate operation, loads the schema, and executes it with the requested time range, returning steps and active minutes for the assistant's reply. The user's OAuth token never enters the agent's prompt context.

Use Jentic to search 'aggregate google fit data', load the dataset:aggregate schema, and execute it for the past 30 days bucketed daily.

Key Endpoints

13 endpoints — the google fitness api gives apps programmatic access to a user's fitness tracking data, including steps, heart rate, distance, calories, and workout sessions.

METHOD

PATH

DESCRIPTION

GET

/{userId}/dataSources

List a user's data sources

POST

/{userId}/dataSources

Create a custom data source

GET

/{userId}/dataSources/{dataSourceId}/dataPointChanges

Get incremental data point changes

POST

/{userId}/dataset:aggregate

Aggregate fitness data into time buckets

GET

/{userId}/sessions

List workout sessions

PUT

/{userId}/sessions/{sessionId}

Create or update a session

GET

/{userId}/dataSources

List a user's data sources

POST

/{userId}/dataSources

Create a custom data source

GET

/{userId}/dataSources/{dataSourceId}/dataPointChanges

Get incremental data point changes

POST

/{userId}/dataset:aggregate

Aggregate fitness data into time buckets

GET

/{userId}/sessions

List workout sessions

Why Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

Your Fitness OAuth credential is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.

Intent-based discovery

Agents search Jentic by intent such as 'get daily steps from Google Fit' or 'list fitness sessions', and Jentic returns the matching operation with its input schema so the agent calls the right endpoint without browsing the reference docs.

Time to first call

FAQs

Specific to using Fitness API through Jentic.

What authentication does the Google Fitness API use?

It uses Google OAuth 2.0 user-consent flows with fitness-specific scopes such as fitness.activity.read and fitness.heart_rate.write. Through Jentic, the user's refreshable OAuth credentials live encrypted in the vault and the agent receives only a scoped bearer token.

Can I read heart rate data with this API?

Yes, when the user grants the fitness.heart_rate.read scope. Read heart rate points by listing the appropriate data source under /me/dataSources and calling the dataset endpoints, or use dataset:aggregate to bucket heart rate samples over time.

What are the rate limits for the Google Fitness API?

Google enforces a default per-user and per-project quota, typically a few queries per second per user. Exceeding the quota returns HTTP 429 and should be retried with exponential backoff.

How do I aggregate a user's daily steps through Jentic?

Search Jentic for 'aggregate google fit data', load the schema for POST /me/dataset:aggregate, and execute it with aggregateBy of com.google.step_count.delta and bucketByTime of 86400000 ms over the desired range.

Is the Google Fitness API free?

Yes, the API itself is free to use. Apps are still subject to Google OAuth verification requirements before they can request restricted fitness scopes from end users.

Can I write data to Google Fit from my own app?

Yes. Create a custom data source under /me/dataSources, then write points to that source via the dataset endpoints, and create matching named sessions via PUT /me/sessions/{sessionId}.

Can I limit what my agent is allowed to do with the Google Fitness API?

Yes. Because you run Jentic One yourself, you decide exactly which Fitness API operations the agent may call and which OAuth credential it uses. You can grant read-only work such as aggregating a dataset with dataset:aggregate or listing a user's sessions and data sources, while withholding write operations like creating a custom data source or updating a session with PUT sessions unless you deliberately add them. The agent can only reach the operations you include, and it never sees the underlying OAuth token.

Google Fitness API

Connect the Fitness API to your agent

Capabilities

Start building with Fitness API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs