Business — entry 015 of 19
Smartsheet
Smartsheet's REST API v2 (`api.smartsheet.com/2.0`) gives programmatic access to sheets, rows, attachments, and reports on top of its spreadsheet-style work-management platform, letting integrations read and write cell data or automate row and sheet operations. It requires an OAuth 2.0 access token, confirmed live via a 403 "You are not authorized to perform this action" response on an unauthenticated GET to `/2.0/sheets`, and the same request sent with an Origin header returned no `access-control-allow-origin` header, reconfirming the API is server-side-only. Smartsheet has no permanent free tier: its pricing page lists only paid per-user monthly plans plus a free trial, alongside custom Enterprise pricing.
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<a href="https://greatapis.com/api/smartsheet/"><img src="https://greatapis.com/badge/smartsheet.svg" alt="Scored 46 on greatapis.com"></a>Auth quickstart
- Register an app / run the OAuth flow to obtain a bearer token.
- Send it as an Authorization header
Authorization: Bearer <token>
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.