Schema | iwatch-mcp

iwatch-mcp

Describes the environment variables required to run the server.

Name	Required	Description	Default
`HEALTHKIT_HELPER_PATH`	No	Override binary location	healthkit-helper/.build/release/HealthKitHelper

Features and capabilities supported by this server

Capability	Details
`tools`	{ "listChanged": false }
`prompts`	{ "listChanged": false }
`resources`	{ "subscribe": false, "listChanged": false }
`experimental`	{}

Functions exposed to the LLM to take actions

Name	Description
get_heart_rateA	Get the most recent heart rate reading from Apple Watch. Returns: JSON object with fields: bpm - heart rate in beats per minute timestamp - ISO-8601 UTC time of the reading source - device/app that recorded the reading device - Apple Watch model (may be null)
stream_heart_rateA	Collect heart rate readings from Apple Watch over a time window. Runs the HealthKit observer for the given duration and returns all samples received, including any buffered readings from the last 5 minutes that hadn't been reported yet. Note: Apple Watch syncs data through iPhone to Mac via iCloud, so "real-time" updates have network-dependent latency (typically 10-60 s). Args: duration_seconds: How long to collect readings (1–300 s). Default 30. Returns: JSON array of heart rate samples, ordered by timestamp.
get_heart_rate_historyA	Retrieve heart rate history stored in macOS HealthKit. Returns all samples recorded within the past N hours, sorted oldest-first. Data comes from Apple Watch and any other HealthKit sources (e.g. Workout app). Args: hours: How many hours of history to fetch (default 24, max ~168 for a week). Returns: JSON array of heart rate samples, each with bpm / timestamp / source / device.

Interactive templates invoked by user choice

Name	Description
No prompts

Contextual data attached and managed by the client

Name	Description
`helper_status`	Reports whether the HealthKit helper binary is built and ready.

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