freddy articles
Articles on health data and AI.
Explore connected data, source comparisons and product updates.
All articles
39 articles-
What's new in freddy: week of September 28, 2026
Date-based questions now follow your local day, and daily totals tell your AI when they may still be incomplete.
-
What's new in freddy: week of September 21, 2026
Lyfta and Runalyze for everyone, a new way to connect multiple accounts and headless agents, stronger mobile sync recovery and easier account switching.
-
Concept2 MCP servers: 8 ways to get your Concept2 Logbook into Claude, ChatGPT, or any AI client
Eight ways to connect your Concept2 Logbook to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with prices and where each one reads from.
-
Health Connect MCP servers: 5 ways to get your Health Connect data into Claude, ChatGPT, or any AI client
Five ways to connect Android's Health Connect to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with how fresh the data is and a price for each.
-
Hevy MCP servers: 8 ways to get your Hevy data into Claude, ChatGPT, or any AI client
Eight ways to connect Hevy to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with prices and which ones need Hevy Pro.
-
Intervals.icu MCP servers: 8 ways to get your Intervals.icu data into Claude, ChatGPT, or any AI client
Eight ways to connect Intervals.icu to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with prices and which ones can plan workouts.
-
Polar MCP servers: 8 ways to get your Polar data into Claude, ChatGPT, or any AI client
Eight ways to connect your Polar watch to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with prices and how much history each reaches.
-
Suunto MCP servers: 9 ways to get your Suunto data into Claude, ChatGPT, or any AI client
Nine ways to connect your Suunto watch to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with prices and which ones need Suunto API approval.
-
Ultrahuman MCP servers: 5 ways to get your Ultrahuman Ring data into Claude, ChatGPT, or any AI client
Five ways to connect your Ultrahuman Ring and M1 to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with prices and glucose support.
-
Wahoo MCP servers: 7 ways to get your Wahoo data into Claude, ChatGPT, or any AI client
Seven ways to connect Wahoo to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with prices and which ones need Wahoo API approval.
-
Withings MCP servers: 9 ways to get your Withings data into Claude, ChatGPT, or any AI client
Nine ways to connect Withings to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with prices and which ones need your own developer app.
-
Apple Health MCP servers: 10 ways to get your Apple Health data into Claude, ChatGPT, or any AI client
Ten ways to connect Apple Health to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with how fresh the data is and a price for each one.
-
Fitbit MCP servers: 8 ways to get your Fitbit data into Claude, ChatGPT, or any AI client
Eight ways to connect Fitbit to Claude, ChatGPT, or any AI app over MCP after the old Fitbit Web API ends, ranked by setup effort, with prices for each.
-
Garmin MCP servers: 10 ways to get your Garmin data into Claude, ChatGPT, or any AI client
Ten ways to connect Garmin Connect to Claude, ChatGPT, or any AI app over MCP, ranked by setup effort, with prices and what each one asks of your Garmin account.
-
Oura MCP servers: 9 ways to get your Oura data into Claude, ChatGPT, or any AI client
Nine ways to link your Oura Ring with Claude, ChatGPT, or any AI app over MCP that still work after Oura ended personal tokens, ranked by setup effort, with prices.
-
What's new in freddy: week of September 14, 2026
More languages for web account settings, guided setup, searchable help, fixes for Hevy and Garmin, and smaller bugs squashed.
-
What's new in freddy: week of September 7, 2026
Amazfit/Zepp beta for all Pro users, redesigned source cards, bug fixes and performance improvements, and Google Health alpha.
-
What's new in freddy: week of Aug 17, 2026
Suunto workouts now store per-second streams, Garmin activity dynamics import from your data export, and fresh data no longer waits behind large history backfills.
-
What's new in freddy: week of Aug 10, 2026
freddy now tells you when a source stops syncing. Plus Suunto GPS tracks, two repairs to Garmin history, and a new recipe.
-
What's new in freddy: week of Jul 27, 2026
Questions about older dates no longer come back empty, the metric catalogue your AI reads at the start of a session is about half the size, and the Android update is live on Play.
-
What's new in freddy: week of Jul 20, 2026
Apple Health forward syncing is fixed on iPhone, the Personal API opened in beta, install buttons replace copy-and-paste setup, and 150+ more source apps are recognized.
-
What's new in freddy: week of Jul 13, 2026
Garmin's full history import is now easy to find, two Apple Health data bugs are fixed, sync status stops claiming to be done early, and the MCP write tools were renamed.
-
What's new in freddy: week of Jul 6, 2026
WHOOP is now generally available, ready-made prompts arrive in your AI client, and freddy can answer questions that span months or years in a single pass.
-
What's new in freddy: week of Jun 29, 2026
freddy is now on Android with Health Connect, queries work across more AI clients, Suunto workout calories are fixed, and morning data lands on time.
-
How Garmin, WHOOP, Oura, Polar, Ultrahuman, Withings, Amazfit, and Eight Sleep measure HRV
One body, seven wearables, HRV numbers from 38 to 95. A deep look at RMSSD vs SDNN and how WHOOP, Oura, Garmin, Fitbit, Polar, Ultrahuman, Apple, and Withings each derive their figure.
-
What's new in freddy: week of June 22, 2026
freddy is now an official ChatGPT app, Ultrahuman is generally available, intervals.icu workouts include per-lap detail, and the dashboard shows each source's sync status more clearly.
-
freddy is now an official ChatGPT app
freddy is now in the ChatGPT app directory. Connect it in a couple of clicks and ask ChatGPT about your sleep, training, and recovery using your own devices.
-
What's new in freddy: week of June 8, 2026
Two new sources (Runalyze and Lyfta), full Garmin history import from your data export, pause and resume for any connection, and a connected-devices view.
-
What's new in freddy: week of June 1, 2026
Garmin and Airthings reach general availability, deeper Polar data with heart-rate zones, richer Garmin activities, a redesigned dashboard, and the new freddy CLI.
-
How to give an AI agent access to your health data from the command line
A command-line tool lets a headless AI agent sign in, connect your wearables, and read your sleep, recovery, and training data, without you building an OAuth integration by hand.
-
What's new in freddy: week of May 25, 2026
Ultrahuman joins in beta, Wahoo and Concept2 reach general availability, a refreshed brand, and connections that stop dropping on a brief hiccup.
-
What's new in freddy: week of May 18, 2026
Multi-device tracking that no longer loses data, more reliable Garmin history, and cleaner account disconnects.
-
Polar versus Oura for everyday recovery tracking
A head-to-head comparison of Polar Vantage V3 and Oura Ring Gen 4 for recovery tracking: form factor, cost model, Nightly Recharge vs Readiness Score, and which to buy.
-
What's new in freddy: week of May 11, 2026
Three new data sources (Garmin, Wahoo, Concept2), a simpler email-code sign in, full-history queries, and cleaner Perplexity support.
-
Best wearable APIs for AI agents: a developer's guide
Practical comparison of the major wearable APIs for developers building AI tooling: rate limits, data depth, OAuth quirks, and which APIs make AI integration painless versus painful.
-
The complete guide to connecting wearable data to AI
What it takes to ask AI assistants like Claude or ChatGPT about your sleep, recovery, workouts, and HRV from any wearable. The pieces that have to fit together, and where each piece comes from.
-
HRV across wearables: how to actually compare what your devices report
Different wearables report HRV differently. Here's why your Oura number doesn't match your WHOOP number, what units to expect from each device, and how to compare across them anyway.
-
Oura vs WHOOP for sleep tracking: which one should you actually buy?
Honest comparison of Oura and WHOOP for sleep tracking. Form factor, battery, accuracy, what each one's API exposes, and which fits which kind of user.
-
6 best personal health MCP servers in 2026
An honest ranking of MCP servers (and the adjacent first-party connectors) that link your wearables and health data to AI assistants like Claude, ChatGPT, and Cursor.
No matching articles
Try a shorter phrase or browse the full list.