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API to List Sheets, Reports and Dashboards with the "Assume-User" Header Should Return Data Even IF User IS Not a Member Anymore
Hi, Enhancement Request Please update the List Sheets, List Reports, and List Dashboards API endpoints so that when they are called using the Assume-User header, they return items owned by the assumed user even if that user is currently a Contributor. Background Users with a Provisional Member license can create sheets,…
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Get Existing Report Definition via API
I have plenty of use cases where being able to get a report's existing definition would be really useful. We can update it via API, but we currently can't retrieve it.
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Help with Verification Step of Webhook Creation Using Bridge
I am trying to use the Bridge API Call Utility to create a webhook on a sheet. I then want to use the Bridge Inbound Webhook integration to monitor sheet activity via the webhook and trigger a Bridge Workflow. I am able to create the webhook, but I'm having trouble figuring out how to complete the Verification Process. Can…
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Action Required — TLS Cipher Suite Update for api.smartsheet.com and app.smartsheet.com (Sept 15, 2026)
Hey developers, Heads up on a security hardening change landing September 15, 2026: Smartsheet is removing support for a set of weaker TLS 1.2 cipher suites across both api.smartsheet.com and app.smartsheet.com. Most integrations won't notice a thing. But if you're running on an older TLS stack, custom HTTP client, or a…
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New Learning Series: "Mastering Smartsheet API" — Part 3 is live
Hey dev friends, Part 3 of Mastering Smartsheet API is live: "Authentication Mastery with Smartsheet API." Your local scripts authenticate fine. You move to production, and at 2 AM a refresh token silently expires, or a service account starts throwing 403s on a sheet it used to access, or a 401 you haven't seen before…
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Developer API and getting started
Hi, We are a developer and building a custom web platform for one of our client who is using smartsheet. Our platform needs to get data from smartsheet and need to show the data in our custom UI. Could anyone recommend the APIs we should be using for this?
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Sheet webhooks now support custom headers
June 29, 2026 Great news for developers building integrations with webhooks: sheet webhooks now support custom HTTP headers. Previously, authenticating webhook payloads meant adding logic on the receiving end to validate callback URL tokens, IP allowlists, or post-receipt signatures. That added friction to the development…
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Commenting and attachments now free for internal users with new CONTRIBUTOR seat type
April, 30, 2026 We've deprecated the VIEWER seat type and replaced it with CONTRIBUTOR (New) — and with it, internal users on your plan gain the ability to comment on sheets and add attachments at no extra cost. This means more people across your organization can actively participate in workflows instead of being limited…
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Webhook Updating Incorrect ID in Smartsheet After Initial Correct Update
Hi Team, We are facing an issue with the webhook integration between Smartsheet and the external system. The webhook triggers successfully and sends data to the external system. The external system then returns an ID, which is expected to update the corresponding row in Smartsheet. However, we are noticing that an…
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Bulk update column formulas in multiple sheets using API and Python
This solution updates a column formula across multiple sheets in a workspace. The script finds all sheets with a certain string in the name, finds a certain column by name on those sheets, and then updates all column formulas to a new column formula. At the time of posting, Control Center Global Updates did not allow me to…