Get a session

One training session (week + day number) with its exercises, sets, targets, last week’s results, and per-muscle feedback. Each set carries loggedAt (when it was finished, epoch ms) and restS (seconds since the previous set in the session finished, null when unknown); progress has sets / reps / volume done so far, startedAt, lastSetAt, elapsedS, and avgRestS. A later week not yet planned is planned on read from the week before.

GET/api/training/mesocycles/{id}/sessions/{week}/{day}

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.

weekintegerrequired

Week number within the mesocycle, starting at 1 (the last week is the deload).

min 1

dayintegerrequired

Training day number within the week, starting at 1.

min 1

Responses

200

The session.

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.weekpath*Week number within the mesocycle, starting at 1 (the last week is the deload).daypath*Training day number within the week, starting at 1.

Request

curl -X GET 'https://app.skcal.fit/api/training/mesocycles/9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d/sessions/2/3' \
  -H 'Cookie: __Secure-better-auth.session_token=YOUR_API_KEY' \
  -H 'Accept: application/json'

const response = await fetch("https://app.skcal.fit/api/training/mesocycles/9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d/sessions/2/3", {
  method: "GET",
  headers: {
    "Cookie": "__Secure-better-auth.session_token=YOUR_API_KEY",
    "Accept": "application/json"
  }
});

import requests

response = requests.get(
    "https://app.skcal.fit/api/training/mesocycles/9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d/sessions/2/3",
    headers={
        "Cookie": "__Secure-better-auth.session_token=YOUR_API_KEY",
        "Accept": "application/json"
    },
)

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"
}