Korta Model Usage

Use CodexBar CLI local cost usage to summarize per-model usage for Codex or Claude, including the current (most recent) model or a full model breakdown. Trig...

Security Scan

The skill's requirements, instructions, and included script are consistent with its stated purpose (summarizing CodexBar local cost JSON); nothing in the package attempts to access unrelated credentials or system-wide settings.

Purpose & Capability

Name/description ask for per-model usage from CodexBar and the skill requires the codexbar binary, provides a script that parses codexbar cost JSON, and documents codexbar CLI flags — all are proportionate and expected.

Instruction Scope

SKILL.md and the bundled script only run the codexbar CLI (or accept a JSON file/stdin) and parse local cost JSON; they do not reference unrelated files, environment variables, or external endpoints in the skill files.

Install Mechanism

Install spec uses a Homebrew cask from the tap 'steipete/tap' (steipete/tap/codexbar). Homebrew casks are reasonable for CLI install, but this is a third-party tap — verify the tap/maintainer before installing.

Credentials

No environment variables, credentials, or config paths are requested. The script only calls codexbar and reads JSON input from codexbar, a file, or stdin — proportions are appropriate for the stated task.

Persistence & Privilege

Skill does not request permanent/always-on presence and does not modify other skills or global agent settings. It only invokes a CLI and runs a local Python script.

Assessment

This skill appears coherent and limited to parsing CodexBar cost JSON. Before installing: 1) Confirm the codexbar Homebrew tap (steipete/tap) is from a trusted maintainer — third-party taps can install arbitrary binaries. 2) Review or run the codexbar CLI separately to ensure it behaves as expected (it will run locally and may read local logs). 3) If you prefer not to install a third-party CLI, you can produce the cost JSON via other means and run the included Python script against the JSON file or stdin. 4) The bundled script does not exfiltrate data, but any CLI you install could; audit the codexbar project if you will install it system-wide.

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.

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:

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.