Calculeaf Features Blog Guide Pricing Open app

API tokens

Calculeaf user guide · Updated 2026-08-16

In Account settings, API Access shows your bearer token. Use it to read or update individual math-region values. Refreshing immediately invalidates the old token.

Copy a variable address

  1. Sign in and save the worksheet.
  2. Right-click a math assignment (:=) and choose Copy variable address.
  3. Call the HTTP API with that address and your token:
GET  /api/v1/cells/<address>/
POST /api/v1/cells/<address>/
     {"value": 42, "unit": "in"}
Authorization: Bearer <your-token>

Both GET and POST responses include the value and its unit. On POST, omit unit to keep the region’s existing unit, or pass "unit": "" to make it dimensionless.

Anyone with the token can read and update your worksheet values — keep it secret. Copy next to the field copies the token; Refresh Token issues a new one.

The Inventor add-in uses the same addresses — see Inventor add-in and Copy variable address on the region context menu. Tokens are created in Account settings, next to billing.