5×5

Change weight, in the workout’s displayed kg/lb unit, for this exercise’s unlogged sets only. Includes the bar. Only change it on a clear user request or acceptance of a suggestion. Confirm the change briefly.

set_weight

Delete one saved check-in only on an explicit user request. Permanently removes its observations and recomputes later avatars so the deleted evidence is no longer retained. Use the exact checkInId and expectedRevision from the current context. Safe to retry the same ID. Does not delete workouts, body-weight logs, profile or other check-ins.

delete_avatar_check_in

Permanently discard the shared active workout without saving it. Only call when the user explicitly asks to discard or cancel this workout. Completed workouts are unaffected.

discard_workout

Log a reported working set for an explicit exercise and 1-based set number. Assume five reps when the user reports the set done without specifying reps; omit reps to use that default. Preserve any explicitly reported rep count, including zero. Use null only to clear a set. Never infer that the user completed a set. Starts the saved rest interval and returns its deadline; clearing the latest logged set cancels its rest. Reopen on a revision conflict. On success, reply with a short acknowledgement and optionally one history-based comparison or cue (1–2 sentences, at most 35 words). Use already-read history, not an extra history call per set. Never invent improvement or change weights as part of encouragement.

log_set

Mark an explicit exercise’s 1-based warmup set complete (done: true), or undo it (done: false). Read the warmup plan from get_workout or start_workout first. When the user reports the warmup done without a rep count, assume the prescribed five reps and mark it complete. If they report a different count, do not mark it complete; partial reps cannot be recorded here. Never use log_set for warmups. Completing all warmups for the exercise starts the saved rest interval; intermediate warmups do not. Undo cancels that exercise’s warmup rest only. Warmups never count as working sets or saved history. Reopen on a revision conflict. Acknowledge briefly.

log_warmup_set

Turn visible observations from user-supplied photos into an illustrative front-and-side avatar image without saving. Follow get_avatar_context first. Record confidence per observation; use unknown/low or omit anything obscured. Side-depth observations need a side photo. Do not infer body-fat percentage, muscle mass, sex, race, age, health or a future body. Send only the structured observations and capture conditions: no photos, URLs, height, weight or manual avatar percentages. Low-confidence or unsuitable evidence retains the previous shape. This is a visual experiment using one adult base, not a validated body model.

preview_avatar_check_in

Read the profile height, latest saved avatar, avatar revision and photo-observation rubric before interpreting a photo for a fitness-avatar check-in. Confidence describes evidence quality. Height belongs to Profile; do not request body weight or photo uploads through this tool. Does not save observations or change a workout.

get_avatar_context

Read saved photo-observation check-ins and derived avatar settings, newest photo date first. Includes uncertainty and decisions about retained or neutral shape controls. Paginate with nextOffset. Use get_avatar with a returned check-in ID to show its image. No photos are stored or returned.

get_avatar_check_ins

Read active button coaching subscriptions and recent webhook timing for this OAuth connection. Does not read or change workouts. Accepted means ChatGPT received the event, not that a reply appeared. This status covers the OAuth connection and does not identify which conversation owns each subscription; match the host task to this conversation before treating monitoring as enabled. Callback URLs and signing secrets are never returned.

get_button_coaching_status

Read the current 5×5 workout draft, exercises, warmup plans and completion, working weights, logged work sets and rest deadline for a conversational workout. Call first to get the current revision and workout ID. The browser and ChatGPT share one active workout, including warmups and rest. When opening/resuming a coaching session, also read get_workout_history (limit 6) once for context. Reply in 1–2 short conversational sentences, with at most one history observation. When the user is opening/resuming an active workout for coaching, follow the shared automatic button-coaching setup instructions once; a read-only state inspection alone must not subscribe. For saved sessions or the last workout date, use get_workout_history.

get_workout