model-usage SKILL.md skillA
model-usage from metaspartan/cybara is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add metaspartan/cybara/model-usage@git:20260218.a87179dPins git:20260218.a87179d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- metaspartan/cybara
- Path
skills/model-usage/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260218.a87179d, committed Feb 18, 2026
- First version recorded
- Jan 31, 2026
- Size
- 2,044 bytes
- Repository stars
- 32
- License
- MIT
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. Trigger when asked for model-level usage/cost data from codexbar, or when you need a scriptable per-model summary from codexbar cost JSON.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# 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
…Read the whole file at its exact version.
How to install
mdr add metaspartan/cybara/model-usage@sha256:60918e1dfd63d9b4The line at the top of this page pins the label git:20260218.a87179d, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_tjudfp2mdndlpiuo)
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Versions
The registry has recorded 2 versions of this file, between Jan 31, 2026 and Feb 18, 2026, about one every 18 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260218.a87179d latest | 2026-02-18 | a87179d | 2,044 B | A | view · diff |
| git:20260131.fc29eb0 | 2026-01-31 | fc29eb0 | 2,045 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2044 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
metaspartan/cybara · 32 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tjudfp2mdndlpiuo GET https://markdownregistry.com/api/v1/resolve?ref=metaspartan/cybara/model-usage GET https://markdownregistry.com/api/v1/blob/60918e1dfd63d9b456ca3984fd305ee1dd0c06b9d5ab36c7a7e5f67f0c1d61fa
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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