GET /api/mcp/fitness

GET /api/mcp/fitness
Authorization: Bearer <api-key>

Returns daily CTL, ATL, and TSB values for a requested date range. A 90-day warmup period is automatically included before from so that values at the start of the window are accurate.

See Fitness Model (CTL/ATL/TSB) for calculation details.

Query parameters

Parameter	Type	Required	Description
from	string	Yes	Start date YYYY-MM-DD
to	string	Yes	End date YYYY-MM-DD

Response

HTTP 200

[
  {
    "date": "2025-01-01",
    "ctl": 68.4,
    "atl": 72.1,
    "tsb": -3.7
  },
  {
    "date": "2025-01-02",
    "ctl": 68.1,
    "atl": 65.8,
    "tsb": 2.3
  }
]

The array contains one entry per calendar day in the from–to range (inclusive), even on rest days (where ctl and atl decay by their respective factors and tsb updates accordingly).

Notes

• Only activities with TSS (i.e. power-meter cycling) contribute to CTL/ATL.
• If you have no activities with power data, all values will be 0.
• The maximum recommended range in a single request is 365 days (plus the 90-day warmup, the server fetches up to 455 days of data internally).

Example

curl "https://mydatafor.life/api/mcp/fitness?from=2025-01-01&to=2025-03-31" \
  -H "Authorization: Bearer $FITREPO_API_KEY"