Scored across 12 tools
The tools are mostly distinct: find vs grep vs read_range have clear boundaries, and insert vs replace_text vs apply are differentiated by single vs multiple edits. The command execution trio (run_command, check, run_tests) has slight overlap because multiple tools can run tests or validation, though the descriptions provide guidance on which to choose.
All tools use a consistent arno. prefix and snake_case, which is predictable. However, the action part mixes single verbs (find, insert, apply, check, grep) with verb_noun forms (read_range, run_command, etc.), a minor deviation from a pure verb_noun pattern.
With 12 tools, the set is well-scoped for a coding assistant: reading, searching, editing, file lifecycle, and command execution are each covered without excessive granularity. Each tool earns its place and the count sits comfortably in the typical 3-15 range.
The surface covers file CRUD (create, read, update via replace_text/apply/insert, delete), code search (find, grep), and command/test execution (run_command, check, run_tests, declare_command). Notable gaps include directory listing or filename search, and file move/rename/copy, which agents may need but can sometimes work around.