10 command line tools that can make Claude Code more useful
Claude Code can become more useful when it has better to call. ast-grep is the strongest pick because it searches and changes code by structure, not just by matching text. That matters because an can work more accurately when it understands code shapes such as functions, imports, and conditions.
helps by showing code changes in a way that follows the ’s syntax. shellcheck catches common mistakes in shell scripts before they cause trouble. Other useful tools include sd, scc, yq, comby, hyperfine, watchexec, and delta.
If only one tool is worth installing first, ast-grep is the clear choice.
Key points
- Claude Code can be improved with extra s.
- ast-grep is the top recommendation because it searches code by structure.
- makes code changes easier to read.
- shellcheck finds common shell script problems.
- The most practical first install is ast-grep.