Claude Code shipped two new versions on May 22 and 23: 2.1.149 and 2.1.150. The headline feature in 2.1.149 is a new /usage command that finally shows you exactly what’s consuming your usage limits.
/usage: Transparency at Last
Until now, hitting your limits felt like a guessing game. The new /usage command breaks down consumption by category — skills, subagents, plugins, and individual MCP servers. If you’ve been wondering whether your Slack MCP server or your runaway subagent is the cost driver, you now get a clear answer.
/diff Gets Keyboard Navigation
The detail view of /diff can now be scrolled with arrow keys, j/k, PgUp/PgDn, Space, and Home/End. Sounds small, but makes a real difference when you’re navigating through larger diffs.
/simplify Becomes /code-review
The /simplify command has been renamed to /code-review. The new name better reflects what the command actually does — reviewing and improving code, not just simplifying it.
Critical Bug Fix
Version 2.1.150 fixes a regression bug from 2.1.147 where the Bash tool returned exit code 127 for every single command on some users’ machines. If your terminal has been acting weird lately, this update should sort it out.
There’s also a fix for Agent Teams teammates with non-ASCII names (like German umlauts) failing every API call due to invalid header encoding. Particularly relevant for non-English users.
My Take
No revolution, but solid improvements. The /usage command was overdue — transparency around usage limits is exactly what power users need. And the quick Bash bug fix shows that Anthropic takes regressions seriously and patches them fast.
Sources: