model-usage SKILL.md skillA
model-usage from cowork-os/cowork-os is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cowork-os/cowork-os/model-usage@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cowork-os/cowork-os
- Path
resources/skills/model-usage/SKILL.md- Versions recorded
- 3
- Latest version
- v1.0.0, committed Sep 19, 2026
- First version recorded
- Feb 28, 2026
- Size
- 2,426 bytes
- Repository stars
- 496
- 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 ## Purpose 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. ## Routing - Use when: Use when the user asks to 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. - Do not use when: Do not use when the request is asking for planning documents, high-level strategy, or non-executable discussion; use the relevant planning or design workflow instead. - Outputs: Outcome from Model-usage: task-specific result plus concrete action notes. - Success criteria: Returns concrete actions and decisions matching the requested task, with no fabricated tool-side behavior. ## Trigger Examples ### Positive - Use the model-usage skill for this request. - Help me with model-usage. …
Read the whole file at its exact version.
How to install
mdr add cowork-os/cowork-os/model-usage@sha256:4de1e1bb7552c9d1The line at the top of this page pins the label v1.0.0, 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_jofjy4eexdyrpoge)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Feb 28, 2026 and Sep 19, 2026, about one every 102 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-09-19 | 405360b | 2,426 B | A | view · diff |
| v1.0.0 | 2026-08-20 | 3fb9cd3 | 2,427 B | A | view · diff |
| git:20260228.1455136 | 2026-02-28 | 1455136 | 2,344 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 (2426 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
cowork-os/cowork-os · 496 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jofjy4eexdyrpoge GET https://markdownregistry.com/api/v1/resolve?ref=cowork-os/cowork-os/model-usage GET https://markdownregistry.com/api/v1/blob/4de1e1bb7552c9d132c58a9eacbb897e652e7f60acd4e34fa2da810b8572359e
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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