Use modern CLI tools (rg, fd, ast-grep, bat, sd, jq, yq, tokei, eza, dust, procs, delta, hyperfine, watchexec, just) through the LocalREPL shell bridge for efficient codebase analysis, structured data extraction, and reactive workflows. Trigger whenever the user wants to search code, inspect a repository, count or analyze files, compare diffs, benchmark commands, or orchestrate multi-step shell work — especially when they haven't specified which tool to use. This skill teaches token-efficient patterns (count-before-enumerate, structured --json output, progressive disclosure) and documents real execution-environment gotchas specific to MCP-launched subprocesses.
2026-06-01