Log or edit a set

Sets a set’s weight and reps (logging it), un-logs it with done false, or edits its targets.

PATCH/api/training/sets/{id}

Authorization

__Secure-better-auth.session_tokenAPI key · cookierequired

Better Auth session. Signing in (Google or email magic link) sets an HttpOnly session cookie that scopes every request to that account. The web app and CLI use this; agents use the OAuth 2.1 flow of the MCP server.

AuthorizationBearer token · headerrequired

Personal API key sent as Authorization: Bearer skcal_…. Create and scope keys in the app under your profile → API keys. Keys default to full access; a scoped key is limited to its granted resource:action permissions and cannot manage other keys.

Path parameters

idstringrequired

Identifier of the mesocycle, set, slot, or custom exercise the path names.

Request body

requiredapplication/json

The set fields to log or change.

weightLbnumber | null

Load in pounds.

repsinteger | null

Reps done.

doneboolean

True logs the set; false un-logs it.

targetWeightLbnumber | null

Target load in pounds.

targetRepsinteger | null

Target reps.

loggedAtstring | integer

When the set was finished (ISO 8601 or epoch ms); logs the set at that time. Without it, logging stamps now and editing a done set keeps its time.

Responses

200

The updated set.

object

400

The request body or parameters failed validation.

errorstringrequired

Human-readable failure reason.

detailstring

Optional extra context, present on upstream failures.

404

No matching resource owned by the caller.

errorstringrequired

Human-readable failure reason.

detailstring

Optional extra context, present on upstream failures.

Try it

Server

Base URLCustom base URLOverrides the selected server when set.

Authorization

API keyRemember on this deviceInclude my values in samples

Parameters

idpath*Identifier of the mesocycle, set, slot, or custom exercise the path names.

Bodyapplication/json

weightLbnumberLoad in pounds.repsintegerReps done.donebooleanTrue logs the set; false un-logs it.targetWeightLbnumberTarget load in pounds.targetRepsintegerTarget reps.loggedAtstringWhen the set was finished (ISO 8601 or epoch ms); logs the set at that time. Without it, logging stamps now and editing a done set keeps its time.

Request

curl -X PATCH 'https://app.skcal.fit/api/training/sets/9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d' \
  -H 'Cookie: __Secure-better-auth.session_token=YOUR_API_KEY' \
  -H 'Accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{
  "weightLb": 185,
  "reps": 8,
  "done": true,
  "targetWeightLb": 190,
  "targetReps": 8,
  "loggedAt": "2026-10-25T18:42:00-05:00"
}'

const response = await fetch("https://app.skcal.fit/api/training/sets/9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d", {
  method: "PATCH",
  headers: {
    "Cookie": "__Secure-better-auth.session_token=YOUR_API_KEY",
    "Accept": "application/json",
    "Content-Type": "application/json"
  },
  body: "{\n  \"weightLb\": 185,\n  \"reps\": 8,\n  \"done\": true,\n  \"targetWeightLb\": 190,\n  \"targetReps\": 8,\n  \"loggedAt\": \"2026-10-25T18:42:00-05:00\"\n}"
});

import requests

response = requests.patch(
    "https://app.skcal.fit/api/training/sets/9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d",
    headers={
        "Cookie": "__Secure-better-auth.session_token=YOUR_API_KEY",
        "Accept": "application/json",
        "Content-Type": "application/json"
    },
    data="{\n  \"weightLb\": 185,\n  \"reps\": 8,\n  \"done\": true,\n  \"targetWeightLb\": 190,\n  \"targetReps\": 8,\n  \"loggedAt\": \"2026-10-25T18:42:00-05:00\"\n}",
)

Response

{
  "ok": true,
  "week": 2,
  "day": 1,
  "exerciseName": "Barbell Bench Press",
  "muscle": "chest"
}

{
  "error": "weightKg must be 9-320 kg",
  "detail": "upstream model returned 500"
}

{
  "error": "weightKg must be 9-320 kg",
  "detail": "upstream model returned 500"
}