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hhopke
by hhopke

icu_create_event

Create a new calendar event by specifying category, start date, and optional details like structured workout, end date, training load, and availability.

Instructions

Create ONE new calendar event from scratch.

For two or more events in a single call, prefer icu_bulk_create_events over a loop. For copying existing events forward in time (repeating a workout for N weeks), use icu_duplicate_events — that tool reuses an existing event's payload instead of taking new fields.

For category guidance and the training_availability enum, read the intervals-icu://event-categories resource. For structured WORKOUT events, put workout-syntax text in description — see intervals-icu://workout-syntax.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesEvent name
colorNoCustom display color (hex string)
categoryYesEvent category enum. Common: WORKOUT, NOTE, RACE_A/B/C, TARGET, PLAN, HOLIDAY, SICK, INJURED. Full list with use-case guidance and the training_availability enum: intervals-icu://event-categories resource. Legacy aliases RACE→RACE_A, GOAL→TARGET accepted.
end_dateNoEnd date in YYYY-MM-DD format. Use for ranged categories (INJURED, SICK, HOLIDAY, SEASON_START) to mark a multi-day block.
athlete_idNoAthlete ID (for coaches managing multiple athletes)
event_typeNoActivity discipline (NOT the category): Ride, Run, Swim, Walk, Hike, VirtualRide, VirtualRun, Other. Required for RACE_A/B/C events.
start_dateYesStart date in YYYY-MM-DD format
descriptionNoEvent description (plain text for non-workouts). For WORKOUT events the server parses this into structured, device-syncable steps with zones and a training load. Use Intervals.icu workout syntax: one step per line as '- <duration> <target>' (duration FIRST), grouped under Warmup / Main / Cooldown headers. Targets: bike '- 5m 85%', '- 5m Z4', or absolute '- 5m 210w'; HR '- 10m 70-80% HR' or '- 10m 145bpm'; run/swim pace '- 5m Z2 Pace', absolute only with a trailing 'pace' word: '- 5m 4:45/km pace', '- 200mtr 1:45/100m pace' (bare '5:00/km' or '1:45/100m' silently drops); threshold is relative — run '- 25m 100% pace', swim CSS '- 200mtr 100% pace' — the words 'threshold'/'CSS'/'5K pace' are NOT parsed as targets. Add cadence to any step: '- 3m Z2 90rpm'. No target: '- 20m free'. Repeats: put 'Nx' after a section name with steps flat beneath, and leave a blank line before and after the repeat block (without it the repeat silently runs only once) — e.g. 'Main 5x' then '- 3m 110%' / '- 3m 50%'. Ramps: '- 10m ramp 50-70%'. Rest: append 'Ns rest' to a step ('- 200mtr Z2 20s rest') or use a separate '- 20s intensity=rest' step (only intensity=rest exports as a device rest step) — never a bare '- 20s' step (that becomes work, not rest). Durations: 'm'=minutes, 's'=seconds; distance steps use 'mtr'=meters / 'km' / 'yrd' (e.g. swim '- 400mtr Z2 Pace'). Do NOT write '[repeat 5x ...]', nested bullets, or 'Z5 3m' (target before duration). Runs need a pace or HR target — a bare 'Z2' gives no load. Full reference: intervals-icu://workout-syntax resource.
show_as_noteNoShow event as a note marker on the fitness chart
training_loadNoPlanned training load
distance_metersNoPlanned distance in meters
duration_secondsNoPlanned duration in seconds
show_on_ctl_lineNoRender event on the CTL line
not_on_fitness_chartNoHide event entirely from the fitness chart
training_availabilityNoTraining availability: NORMAL, LIMITED, or UNAVAILABLE. Typical for INJURED/SICK/HOLIDAY blocks.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already indicate a write operation (readOnlyHint=false) and non-destructive (destructiveHint=false). Description adds context: 'from scratch' vs copy, and detailed workout syntax guidelines. No contradictions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Extremely concise: three sentences front-loading purpose, then alternatives, then references. Every sentence adds value with no fluff.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 15 parameters, 3 required, and an output schema, the description is sufficient. It covers core purpose, key alternatives, and crucial references for categories and workout syntax. Output schema exists, so return values need not be detailed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with detailed descriptions for all 15 parameters. The tool description adds value by referencing the workout syntax resource and category guidance, though the schema already covers param details.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Create ONE new calendar event from scratch,' specifying the verb (create), resource (calendar event), and scope (single event). It distinguishes from sibling tools like icu_bulk_create_events and icu_duplicate_events.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicit when-to-use guidance: 'For two or more events in a single call, prefer icu_bulk_create_events over a loop. For copying existing events forward in time, use icu_duplicate_events.' Also references resource for category guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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