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Agent skill

Rework Brief

by MillenniumDawn in MillenniumDawn/Millennium-Dawn

Rewrite a country rework or additions task issue into a mechanic-by-mechanic design brief: study its mockups, inventory the country's existing assets, and reframe each mechanic with tooling hints…

CC-BY-SA-4.0Auto-check passed

Install Rework Brief

skills CLI
$ npx skills add MillenniumDawn/Millennium-Dawn --skill rework-brief -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install MillenniumDawn/Millennium-Dawn rework-brief --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/MillenniumDawn/Millennium-Dawn.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/rework-brief .claude/skills/rework-brief && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
rework-brief
GitHub stars
140
Token cost
~893 tokens
SKILL.md length
458 words
Files
1
Skills in repo
24
Repo updated
First seen
Licence
CC-BY-SA-4.0

At a glance

Rewrite a country rework or additions task issue into a mechanic-by-mechanic design brief: study its mockups, inventory the country's existing assets, and reframe each mechanic with tooling hints…

  • Works in 7 steps: Resolve the TAG and issue number, then… → Study the mockups. Download every image… → Inventory the country's existing assets.… → …
  • Asked to reframe
  • SKILL.md covers House style and Steps
  • Calls gh

What it does

Rework Brief is an agent skill from MillenniumDawn/Millennium-Dawn. Rewrite a country rework or additions task issue into a mechanic-by-mechanic design brief: study its mockups, inventory the country's existing assets, and reframe each mechanic with tooling hints stripped. Use when asked to reframe, clarify, or rewrite a rework task or roadmap issue, e.g. "/rework-brief JAP 801".

Its SKILL.md is about 890 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Millennium Dawn and it's codebase. The licence is CC-BY-SA-4.0.

When your agent uses it

  • Asked to reframe
  • Rewrite a rework task

Example prompts

  • “/rework-brief JAP 801”
  • “/rework-brief”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Resolve the TAG and issue number, then fetch the issue with its comments
  2. Study the mockups. Download every image in the body to the scratchpad and read it as
  3. Inventory the country's existing assets. Launch up to 3 Explore agents in parallel,
  4. Draft the new body: a "What this is" paragraph, one section per mechanic with its
  5. Present the full body for approval. Do not edit the issue yet.
  6. On approval, write the body to a UTF-8 file and apply it. This replaces only the
  7. View the issue again. Confirm the images render and the title and labels are intact.

What it can do on your machine

Read from SKILL.md and the folder at commit 365024b. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • gh

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use gh, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Rework Brief loads about 893 tokens when it runs. Until then it costs about 82 tokens; SKILL.md has 458 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~82
When it runs · the whole SKILL.md, loaded when a task matches
~893

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from MillenniumDawn/Millennium-Dawn at commit 365024b, republished under its CC-BY-SA-4.0 licence (© MillenniumDawn). 458 words, ~893 tokens.

Download SKILL.mdSave it as .claude/skills/rework-brief/SKILL.md (or your agent's skills folder).
name
rework-brief
description
Rewrite a country rework or additions task issue into a mechanic-by-mechanic design brief: study its mockups, inventory the country's existing assets, and reframe each mechanic with tooling hints stripped. Use when asked to reframe, clarify, or rewrite a rework task or roadmap issue, e.g. "/rework-brief JAP 801".
disable-model-invocation
true

Rewrite a rework task issue into a design brief that explains each mechanic on its own terms. This reframes an existing issue. It implements nothing.

Syntax: /rework-brief [TAG] [issue-number]. Either may be omitted: infer the TAG from the issue or branch, or take a pasted task description. Requested arguments: $ARGUMENTS

House style

Do not re-ask about this. Each signature mechanic, and each economy-sector rework, gets:

  • Goal: the design goal and the player experience.
  • The real-world idea: the concept the mechanic models.
  • Starting state (<start year>): where the country begins and which existing assets model it today.
  • What it influences: the game systems it touches.
  • Player choices: branches, paths, and side decisions, with trade-offs.
  • How it progresses: how it evolves and resolves.

Close each section with one italic line: Built from: <existing asset ids>. Shape: <one phrase, such as dynamic modifier, timed idea, cosmetic tag, or event chain>.

Smaller standalone additions (one MIO trait, extra leaders, a cosmetic tag) get a short goal paragraph and the Built from / Shape line.

Rules:

  • Pure design prose. No slash commands, file paths, line numbers, or "mirror the China pattern" pointers.
  • Name only assets you have verified exist. If the issue names one that does not, say so in the rewrite.
  • Keep every image from the original issue, with its exact URL, in the relevant section. Fold each mockup's boxes, labels, and cross-links into Player choices and How it progresses.
  • Say that reusing existing assets is optional. A clean rebuild is fine where it serves the design.
  • If the mechanics reference each other, add a "How the mechanics interlock" section.
  • Move build order, phasing, and any tooling checklist to a short appendix.
  • Do not discuss non-English localisation.
Show full SKILL.md (192 more words)Show less

Steps

  1. Resolve the TAG and issue number, then fetch the issue with its comments:

    gh issue view <number> --repo MillenniumDawn/Millennium-Dawn --json title,body,labels,comments

  2. Study the mockups. Download every image in the body to the scratchpad and read it as an image. Record the starting state, each branch and its pros and cons, side decisions, and cross-mechanic dependencies.

  3. Inventory the country's existing assets. Launch up to 3 Explore agents in parallel, split by mechanic cluster. Each reports, with exact identifiers and concrete effects, the ideas, focus branches, dynamic modifiers, decisions, MIOs, characters, and diplomacy content the issue references, and flags any named asset that does not exist.

  4. Draft the new body: a "What this is" paragraph, one section per mechanic with its images, the interlock section, standalone additions, and the build-order appendix.

  5. Present the full body for approval. Do not edit the issue yet.

  6. On approval, write the body to a UTF-8 file and apply it. This replaces only the body:

    gh issue edit <number> --repo MillenniumDawn/Millennium-Dawn --body-file <file>

  7. View the issue again. Confirm the images render and the title and labels are intact. Report the URL.

© MillenniumDawn, CC-BY-SA-4.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .claude/skills/rework-brief of MillenniumDawn/Millennium-Dawn.

Open the folder on GitHubat commit 365024b

Compare with similar skills

Rework Brief next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Rework Brief compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Rework Brief this skillMillenniumDawn/Millennium-Dawn140—~893Automated safety check: PassCC-BY-SA-4.0
Briefalirezarezvani/claude-skills28k—~967Automated safety check: PassMIT
Briefdavepoon/buildwithclaude3.6k—~1.3kAutomated safety check: NotesMIT
Rewrite Plannexu-io/open-design100k—~511Automated safety check: PassApache-2.0
RewriteNxcoreAI/EverRoom3k—~124Automated safety check: PassCustom licence
Review Briefevery-app/open-seo23k—~1.2kAutomated safety check: PassMIT

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Questions about Rework Brief

What does Rework Brief do?

Rewrite a country rework or additions task issue into a mechanic-by-mechanic design brief: study its mockups, inventory the country's existing assets, and reframe each mechanic with tooling hints…. Rework Brief is an agent skill from MillenniumDawn/Millennium-Dawn. Rewrite a country rework or additions task issue into a mechanic-by-mechanic design brief: study its mockups, inventory the country's existing assets, and reframe each mechanic with tooling hints stripped.

When should I use Rework Brief?

Rework Brief fits situations like: asked to reframe; rewrite a rework task.

How do I install Rework Brief in Claude Code?

Run `npx skills add MillenniumDawn/Millennium-Dawn --skill rework-brief -a claude-code`. Or copy the skill folder (.claude/skills/rework-brief in MillenniumDawn/Millennium-Dawn) into .claude/skills/rework-brief in your project. Claude Code loads it when a task matches its description.

How do I install Rework Brief in Codex?

Run `npx skills add MillenniumDawn/Millennium-Dawn --skill rework-brief -a codex`. Or copy the skill folder (.claude/skills/rework-brief in MillenniumDawn/Millennium-Dawn) into .agents/skills/rework-brief in your project. Codex loads it when a task matches its description.

Can I use Rework Brief in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add MillenniumDawn/Millennium-Dawn --skill rework-brief -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rework-brief, .gemini/skills/rework-brief, .github/skills/rework-brief and .opencode/skills/rework-brief in your project.

What does Rework Brief need to run?

Going by SKILL.md and its folder, Rework Brief needs the command-line tools its instructions call (gh).

Does Rework Brief access the network?

SKILL.md contains no URLs. Its commands use gh, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Rework Brief safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Rework Brief use?

Rework Brief is published under the CC-BY-SA-4.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Rework Brief use?

About 893 tokens (SKILL.md is roughly 3.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Rework Brief?

Skills that share tags, products or a category with Rework Brief: Brief (alirezarezvani/claude-skills, 28k stars), Brief (davepoon/buildwithclaude, 3.6k stars), Rewrite Plan (nexu-io/open-design, 100k stars) and Rewrite (NxcoreAI/EverRoom, 3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Rework Brief?

MillenniumDawn (a GitHub organization) maintains it in MillenniumDawn/Millennium-Dawn, which has 140 GitHub stars. The repository holds 24 skills in this directory. The repository was last updated on October 10, 2026.

Source: MillenniumDawn/Millennium-Dawn on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.