KuCoin API
hidden body parameter removal on POST /api/v1/hf/orders*
Stopped workingSubscribe to KuCoin APIShare
On August 3, 2026, KuCoin API removed the body parameter hidden from POST /api/v1/hf/orders*. Calls specifying this parameter now fail, as the service no longer supports the hidden, iceberg and visibleSize parameters.
Calls it hits
POST /api/v1/hf/orders*body parameter hidden
What to use instead of these calls
Stop sending hidden, iceberg and visibleSize on spot orders, including POST /api/v1/hf/orders and its sync, test and batch variants, to prevent KuCoin from rejecting them with error 400413.
In KuCoin API's words
No longer supports the hidden, iceberg and visibleSize parameters.
Facts
- API
- KuCoin API
api.kucoin.com - Kind
- Parameter removal
- Announced
- August 3, 2026
- Takes effect
- August 3, 2026
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
- Verified
- , against KuCoin API's own pages
Questions
When does this change take effect?
Calls to POST /api/v1/hf/orders*, body parameter hidden on KuCoin API stopped working on August 3, 2026.
What happens to calls after August 3, 2026?
They have failed since August 3, 2026.
How do I find the calls this hits in my code?
Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.
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You fixed this one by hand.
Okapi opens the pull request with the fix before the next breaking change reaches your code.