dakota: Skill for Claude Code

.agents/skills/dakota-workstation/SKILL.md

dakota-workstation is a skill for Claude Code, Codex from projectbluefin/dakota. It costs 16 tokens per session (904 once invoked), scanned A, original, MIT.

A set of instructions for integrating the Dakota workstation with Homebrew, system services, and image updates. Homebrew is a package manager for installing developer software.

In plain words
What is it for?
Use it when changing Homebrew packaging, workstation service integration, user-level update recipes, or local image-update testing.
Why use it?
It helps avoid broken package installations and distinguishes persistent user data from files managed by the operating-system image.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is projectbluefin/dakota's own configuration. It tells Claude Code and Codex how to work on dakota itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything dakota configures →

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /home/linuxbrew/.linuxbrew.

Reuse

Borrowing it

Nothing to install: this file belongs to projectbluefin/dakota. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/projectbluefin/dakota/testing/.agents/skills/dakota-workstation/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/projectbluefin/dakota

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for dakota-workstation

README.md
[![agentmods](https://agentmods.dev/badge/skills/projectbluefin/dakota/dakota-workstation/github.svg)](https://agentmods.dev/skills/projectbluefin/dakota/dakota-workstation)
Your own site
<a href="https://agentmods.dev/skills/projectbluefin/dakota/dakota-workstation"><img src="https://agentmods.dev/badge/skills/projectbluefin/dakota/dakota-workstation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for dakota-workstation

Your own site · 80×15
<a href="https://agentmods.dev/skills/projectbluefin/dakota/dakota-workstation"><img src="https://agentmods.dev/badge/skills/projectbluefin/dakota/dakota-workstation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 904 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00016 $0.00904
Opus 5 $0.00008 $0.00452
Sonnet 5 $0.00003 $0.00181
Haiku 4.5 $0.00002 $0.00090

Measured today against content hash c9cc45f867f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

dakota-workstation scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/dakota-workstation/SKILL.md · 71 lines

How it starts

The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dakota Workstation Integration

Dakota runs Homebrew directly on the host rather than in a container, with persistent user data at /home/linuxbrew/.linuxbrew.

When to Use

  • Editing host Homebrew packaging elements (elements/bluefin/brew.bst, brew-tarball.bst)
  • Managing workstation services or systemd unit presets owned by BST elements and their source files
  • Diagnosing broken host brew prefixes or bottle rejection errors (see references/host-homebrew.md)

When NOT to Use

  • Packaging system applications or CLI tools for the base image → load dakota-packaging
  • Writing end-user ujust recipes → load dakota-ujust
  • OCI layer composition → load dakota-image

Core Process

  1. Route the Area:
    • Host Homebrew integration or prefix issues: consult references/host-homebrew.md.
    • Workstation services / systemd units: locate the owning BST element and its sources/install-commands. Unit files are distributed under directories such as files/firstboot/, files/countme/, and files/wallpaper-month/; some units and presets are generated by elements. Use find files -type f \( -name '*.service' -o -name '*.timer' -o -name '*.preset' \) to locate source files, then trace their callers in elements/.
  2. Verify State Boundaries:
    • Differentiate image-owned immutable files (/usr) from persistent user state (/home/linuxbrew).
  3. Declare Services in BST:
    • Enable units declaratively in BST element install-commands or via systemd preset files.
  4. Validate:
    • Run just validate to ensure dependency graphs and layer composition remain sound.

Invariants

  • Prefix Spelling Invariant: Invoke brew strictly through /home/linuxbrew/.linuxbrew/bin/brew. The /var/home spelling breaks bottle prefix detection and forces broken source builds.
  • GNU Make Invariant: The image must supply GNU Make in /usr/bin alongside GCC. Homebrew's internal PATH filter strips all other locations during native gem builds.
  • Persistent State Invariant: /home/linuxbrew/.linuxbrew is persistent user data. Reboots and image updates will not repair corrupted gems.
  • No ublue-os Writes: Fix shared path regressions in projectbluefin/common. Never submit PRs or issues to ublue-os/*.

Read the full file on GitHub · 71 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today Changed c9cc45f867f3
  2. yesterday Changed · +32 lines 64f96a13f718
  3. 10d ago First seen · 39 lines · 16 tokens per session scan A b5830fcdfb98

Subscribe to this mod's changes

dakota-workstation is a skill published in the GitHub repository projectbluefin/dakota (150 stars, last pushed today), licensed MIT. It adds 16 tokens to every session and 904 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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