Developer platform · API v1

Build with the FastSheets API.

Read the live demo database through a typed, versioned API. Selected integration writes are implemented behind bearer-token authentication.

Open Swagger UIOpen ReDocDownload swagger.jsonView on GitHub
Public preview access. GET endpoints require no authentication. Writes return 503 until FASTSME_API_TOKEN is configured; enabled clients send Authorization: Bearer <token>.

Resources

Workbooks

Spreadsheet workbooks and their dimensions.

GET /api/v1/workbooksGET /api/v1/workbooks/{id}

Cells

Raw values, formulas, and formatting for workbook cells.

GET /api/v1/cellsGET /api/v1/cells/{id}

Quick start

curl "https://sheets.fastsme.com/api/v1/workbooks?limit=20"

python - <<'PY'
import requests
rows = requests.get("https://sheets.fastsme.com/api/v1/workbooks", timeout=20).json()
print(rows["data"])
PY

Runtime OpenAPI: /api/openapi.json · Stable compatibility schema: /swagger.json · Interactive docs: /api/docs