---
title: "COROS · Connectors · Serain"
description: "COROS in Serain, the open-source personal AI agent you text over iMessage. Sleep, HRV, recovery, training load and activities from your COROS watch. Read only."
canonical: https://serain.si/connectors/coros/
language: en
last_updated: 2026-10-14
---

# COROS

> Sleep, HRV, recovery, training load and activities from your COROS watch. Read only.

- Category: Health
- Where: In the web interface
- Access: Read only
- Built by: Serain

## What it may do

Reads only. It cannot send, change or delete anything.

## Connect

Web interface, under Connections

## Tools (11)

| Name | What it does | Level |
|---|---|---|
| `coros_daily_health` | Daily values: steps, stress, sleep | read |
| `coros_sleep` | Sleep | read |
| `coros_sleep_hrv` | HRV during sleep | read |
| `coros_recovery` | Recovery | read |
| `coros_resting_hr` | Resting heart rate | read |
| `coros_stress` | Stress | read |
| `coros_training_load` | Training load | read |
| `coros_fitness` | VO2max, threshold, predictions | read |
| `coros_activities` | Search activities | read |
| `coros_activity` | One activity in detail | read |
| `coros_schedule` | Training plan of the week | read |

Levels and descriptions live in Serain's code, never in the provider's. What the service returns counts as untrusted: it informs Serain, it never instructs it.

- [All connectors](https://serain.si/connectors/)
- [Setup guide](https://github.com/valewnrt/serain/blob/main/docs/SETUP.md)

## Links

- [GitHub](https://github.com/valewnrt/serain)
- [Setup](https://github.com/valewnrt/serain/blob/main/docs/SETUP.md)
- [Architecture](https://github.com/valewnrt/serain/blob/main/docs/ARCHITECTURE.md)
- [Security policy](https://github.com/valewnrt/serain/blob/main/SECURITY.md)
- [Deutsche Fassung](https://serain.si/de/connectors/coros/)