Model usage statistics

What this skill does

# Model usage ## Overview Get per-model usage cost from CodexBar's local cost logs. Supports "current model" (most recent daily entry) or "all models" summaries for Codex or Claude. TODO: add Linux CLI support guidance once CodexBar CLI install path is documented for Linux. ## Quick start 1. Fetch cost JSON via CodexBar CLI or pass a JSON file. 2. Use the bundled script to summarize by model. ```bash python {baseDir}/scripts/model_usage.py --provider codex --mode current python {baseDir}/scripts/model_usage.py --provider codex --mode all python {baseDir}/scripts/model_usage.py --provider claude --mode all --format json --pretty ``` ## Current model logic - Uses the most recent daily row with `modelBreakdowns`. - Picks the model with the highest cost in that row. - Falls back to the last entry in `modelsUsed` when breakdowns are missing. - Override with `--model <name>` when you need a specific model. ## Inputs - Default: runs `codexbar cost --format json --provider <codex|claude>`. - File or stdin: ```bash codexbar cost --provider codex --format json > /tmp/cost.json python {baseDir}/scripts/model_usage.py --input /tmp/cost.json --mode all cat /tmp/cost.json | python {baseDir}/scripts/model_usage.py --input - --mode current ``` ## Output - Text (default) or JSON (`--format json --pretty`). - Values are cost-only per model; tokens are not split by model in CodexBar output. ## References - Read `references/codexbar-cli.md` for CLI flags and cost JSON fields.

• Clarifies goals, inputs, and success criteria
• Preserves evidence and marks uncertain boundaries
• Produces structured, editable results