The Agent Skills Directory

[COMMAND_EXECUTION]: The Python script scripts/model_usage.py invokes the codexbar command-line utility using subprocess.check_output. The command arguments for the provider are strictly validated against a predefined list of allowed values (codex, claude), which prevents arbitrary command injection.
[EXTERNAL_DOWNLOADS]: The skill requires the installation of the codexbar CLI, which is hosted in a third-party Homebrew tap (steipete/tap/codexbar). This is an external dependency necessary for the skill's functionality.
[DATA_EXPOSURE]: The script includes an --input flag that allows it to read from arbitrary file paths or standard input. This is designed to process exported cost JSON data, but it grants the capability to read local files if a path is provided.

model-usage