Get all diary entries for a given date.

Returns every food entry logged for the day. Each "Serving" entry is enriched (best-effort) with the food's name, source, the serving measure (unit name and grams per unit), the number of servings, and that food's own nutrient profile scaled to the amount eaten. Non-food entries (exercise, biometrics) carry their own name.

Note: the per-entry "nutrients" are each food's individual contribution, which is distinct from the day-level nutrition_summary aggregate below.

Also returns a top-level energy_summary field with pre-computed values most relevant to the user:

• total_target_kcal: daily calorie target dynamically adjusted for expenditure and weight goal (equivalent to Cronometer's "Total Target" in the Energy Summary screen)

• consumed_kcal: total calories consumed

• remaining_kcal: calories remaining to stay on target (total_target_kcal - consumed_kcal). Always report this when summarizing the user's day. Prefer this over manually deriving values from the burn breakdown fields.

Also returns a nutrition_summary field with consumed totals for every nutrient the user tracks in Cronometer (macros plus any tracked micronutrients such as saturated fat, cholesterol, or omega-3/6):

• macros: flat macro totals (energy, protein, carbs, net_carbs, fat, fiber, alcohol)

• nutrients: the full list of tracked nutrients with amounts and units

Args: date: Date as YYYY-MM-DD (defaults to today).

Add a food entry to the Cronometer diary.

Use search_foods to find food_id and measure_id, then get_food_details to confirm serving sizes and gram weights.

Args: food_id: Numeric food ID from search_foods results. measure_id: Measure/unit ID from get_food_details. grams: Weight of the serving in grams. date: Date to log as YYYY-MM-DD (defaults to today). translation_id: Translation ID from search results (usually 0). diary_group: Meal slot -- one of "auto", "breakfast", "lunch", "dinner", "snacks" (case-insensitive, default "auto").

Remove one or more food entries from the Cronometer diary.

Use get_food_log to find entry IDs.

Args: entry_ids: List of serving/entry IDs to remove. date: Date the entries belong to as YYYY-MM-DD (defaults to today).

Mark a diary day as complete or incomplete.

Args: date: Date to mark as YYYY-MM-DD. complete: True to mark complete, False for incomplete.

Copy all diary entries from the previous day to the given date.

Additive -- does not remove existing entries on the destination date.

Args: date: Destination date as YYYY-MM-DD (defaults to today).

Get daily nutrition summary with consumed macro and micronutrient totals.

Returns the amounts actually consumed for the day, covering every nutrient the user tracks in Cronometer (i.e. has a target set for). The response has:

• summary: flat macro totals (energy, protein, carbs, net_carbs, fat, fiber, alcohol). A value is null if that macro isn't tracked.

• nutrients: the full list of tracked nutrients, each with id, name, amount, unit, category, and confidence.

A nutrient only appears if it's tracked in Cronometer. To surface e.g. saturated fat, cholesterol, or trans fat, set a target for it in Cronometer and it will flow through automatically.

Args: date: Date as YYYY-MM-DD (defaults to today).

Get nutrition scores with per-nutrient consumed amounts and category grades.

Returns category scores (All Targets, Vitamins, Minerals, Electrolytes, Antioxidants, Immune Support, Metabolism, Bone Health) with the actual consumed amount and confidence level for each tracked nutrient.

This is the richest nutrition endpoint -- use it when you need to know both how much of each nutrient was consumed AND how close each is to the target.

Args: date: Date as YYYY-MM-DD (defaults to today).

Search Cronometer's food database by name.

Returns matching foods with their IDs and source information. Use the food_id and measure_id from results with add_food_entry, or pass food_id to get_food_details for full nutrition info.

Args: query: Food name or keyword (e.g. "eggs", "chicken breast").

Get detailed food information including nutrition and serving sizes.

Use this after search_foods to get the full nutrient profile and available measure_ids needed for add_food_entry.

Args: food_id: Food ID from search_foods results.

Create a custom food in Cronometer with specified nutrition.

Nutrient amounts should be for the full serving size specified. After creation, use the returned food_id with add_food_entry to log it.

Args: name: Food name. calories: Calories per serving (kcal). protein_g: Protein per serving (g). fat_g: Fat per serving (g). carbs_g: Carbs per serving (g). fiber_g: Fiber per serving (g, default 0). sugar_g: Sugar per serving (g, default 0). sodium_mg: Sodium per serving (mg, default 0). saturated_fat_g: Saturated fat per serving (g, default 0). serving_name: Name for the serving size (default "1 serving"). serving_grams: Weight of one serving in grams (default 100).

Get current macro targets including weekly schedule and templates.

Returns the weekly macro schedule (which template applies to each day) and all saved macro target templates with their values.

Get fasting history from Cronometer.

Returns fasts within the date range including status, timestamps, and duration.

Args: start_date: Start date as YYYY-MM-DD (defaults to 30 days ago). end_date: End date as YYYY-MM-DD (defaults to today).

Get aggregate fasting statistics.

Returns total fasting hours, longest fast, average fast duration, and completed fast count.

List the biometric metrics tracked in Cronometer.

Returns every metric type the account can record (Weight, Body Fat, Heart Rate, Blood Glucose, Waist Size, Sleep, blood panels, body measurements, etc.). Use the metric_id and a unit_id from the results with get_biometrics.

Get a biometric time series such as weight or body fat from Cronometer.

Returns the recorded values over the date range as a list of {day, value} points.

Use list_biometrics to find metric_id and unit_id (e.g. Weight is metric_id 1, with unit_id 1 for kg or 2 for lbs).

Args: metric_id: Numeric metric ID from list_biometrics. unit_id: Numeric unit ID from the metric's units in list_biometrics. start_date: Start date as YYYY-MM-DD (defaults to 30 days ago). end_date: End date as YYYY-MM-DD (defaults to today).