Slack · Endpoint removal
POST /api/files.upload stops working
Stopped working
Calls to POST /api/files.upload on Slack stopped working on November 12, 2025.
What to use instead of these calls
Upload with files.getUploadURLExternal then files.completeUploadExternal.
Calls it hits
POST /api/files.upload
Facts
- API
- Slack
slack.com - Kind
- Endpoint removal
- Announced
- April 9, 2024
- Takes effect
- November 12, 2025
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
More from Slack
- POST /api/workflows.stepCompleted stops working Stopped working
- POST /api/workflows.stepFailed stops working Stopped working
- POST /api/workflows.updateStep stops working Stopped working