Nyuchi MCP for YNAB runs each connected person's requests on an isolated container so one person's usage can't slow down anyone else's. There's a cap on how many of those can run at the same time — if every slot is busy when your request arrives, you'll get a response like:
{"error": "at_capacity", "hint": "Nyuchi MCP for YNAB is at capacity for concurrent users right now. Please try again in a minute or two..."}Why this happens
This is a capacity limit, not an error in your setup or an account-specific block — it means the service is unusually busy right now. It resolves itself as other people's sessions finish and free up a slot.
What to do
Wait a minute or two and try again — most of the time this clears on its own quickly.
Check the project page for any known ongoing issue.
If it persists for more than a few minutes, let us know via the chat bubble or email below — that's a signal we may need to raise the capacity limit.
Still stuck?
Use the chat bubble in the corner of ynab.nyuchi.com, or email [email protected].