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Agent skill

Brainstorm

by dcodesdev in dcodesdev/LetterSpace

Use this when the user wants to brainstorm, think through an idea, explore approaches, weigh options, or says 'brainstorm' / 'let's think about'.

MITAuto-check passedAgent Workflows

Install Brainstorm

skills CLI
$ npx skills add dcodesdev/LetterSpace --skill brainstorm -a claude-code

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

GitHub CLI
$ gh skill install dcodesdev/LetterSpace brainstorm --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/dcodesdev/LetterSpace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/brainstorm .claude/skills/brainstorm && 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
brainstorm
GitHub stars
100
Token cost
~380 tokens
SKILL.md length
210 words
Files
1
Skills in repo
5
Repo updated
First seen
Licence
MIT

At a glance

Use this when the user wants to brainstorm, think through an idea, explore approaches, weigh options, or says 'brainstorm' / 'let's think about'.

  • Works in 5 steps: Restate the problem in one or two… → Ask the questions that would change the… → Offer several distinct approaches, not… → …
  • Wants to brainstorm
  • SKILL.md covers Rules, How to brainstorm and Keep it
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Brainstorm is an agent skill from dcodesdev/LetterSpace. Use this when the user wants to brainstorm, think through an idea, explore approaches, weigh options, or says 'brainstorm' / 'let's think about'. Discussion only: no code is written, edited, or run.

Its SKILL.md is about 380 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Agent Workflows, covering Brainstorming. The repository describes itself as: Self-hosted open source newsletter platform for managing subscribers and sending campaigns. The licence is MIT.

When your agent uses it

  • Wants to brainstorm
  • Think through an idea
  • Explore approaches
  • Says brainstorm / lets think about

Example prompts

  • “brainstorm”
  • “s think about”
  • “/brainstorm”

Workflow steps

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

  1. Restate the problem in one or two sentences to confirm you understand it.
  2. Ask the questions that would change the answer — constraints, users, scale, what "done" looks like.
  3. Offer several distinct approaches, not variations of one. For each: what it is, what it costs, what it breaks.
  4. Recommend one and say why. Name the trade-off you are accepting.
  5. Leave the user with concrete next steps they can turn into a plan.

What it can do on your machine

Read from SKILL.md and the folder at commit a06ec86. 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

    No scripts in the folder and no shell commands in SKILL.md.

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

  • Network

    No URLs in SKILL.md.

    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

Brainstorm loads about 380 tokens when it runs. Until then it costs about 52 tokens; SKILL.md has 210 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~52
When it runs · the whole SKILL.md, loaded when a task matches
~380

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 dcodesdev/LetterSpace at commit a06ec86, republished under its MIT licence (© dcodesdev). 210 words, ~380 tokens.

Download SKILL.mdSave it as .claude/skills/brainstorm/SKILL.md (or your agent's skills folder).
name
brainstorm
description
Use this when the user wants to brainstorm, think through an idea, explore approaches, weigh options, or says 'brainstorm' / 'let's think about'. Discussion only: no code is written, edited, or run.

Brainstorm

Think it through with the user. Do not touch code.

Rules

  • No code changes. Do not create, edit, delete, or rename any file. Do not run build, test, install, or git commands that change state.
  • No implementation. Do not write code snippets as a proposed solution. Describe approaches in prose; a one-line pseudo-sketch is fine if it makes an idea clearer.
  • Reading is allowed. Read files and search the codebase to ground the discussion in what exists today.
  • Stay in brainstorm mode until the user explicitly asks to implement something. Then hand off to new-plan or plan-for-later rather than coding directly.

How to brainstorm

  1. Restate the problem in one or two sentences to confirm you understand it.
  2. Ask the questions that would change the answer — constraints, users, scale, what "done" looks like.
  3. Offer several distinct approaches, not variations of one. For each: what it is, what it costs, what it breaks.
  4. Recommend one and say why. Name the trade-off you are accepting.
  5. Leave the user with concrete next steps they can turn into a plan.

Keep it

  • Short. Lists over paragraphs.
  • Honest. Say when an idea is bad, and when you don't know.
  • Grounded. Cite real files and behavior from the repo when relevant.

© dcodesdev, MIT. 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/brainstorm of dcodesdev/LetterSpace.

Open the folder on GitHubat commit a06ec86

Compare with similar skills

Brainstorm 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.

Brainstorm compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Brainstorm this skilldcodesdev/LetterSpace100—~380Automated safety check: PassMIT
Brainstormingxpinjection/test-driven-spring-boot11254 repos~2.6kAutomated safety check: PassMIT
LLM Councilgcpdev/llm-council-skill4611 repos~1kAutomated safety check: NotesMIT
Typesafe AIOpenAgentsInc/openagents4559 repos~2.5kAutomated safety check: PassMIT
Yao Meta Skillyaojingang/yao-meta-skill2.7k—~768Automated safety check: PassMIT
Trellis StartROYIANS/foliq-print-template-designer1356 repos~646Automated safety check: PassMIT

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  • Refactor

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  • Document

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    Use this when writing or updating documentation — a README, docs/ page, CLAUDE.md, changelog entry, or doc comments — or when the user says 'document this'.

    100 GitHub stars~461 tokensUpdated 5 days ago
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Categories

Questions about Brainstorm

What does Brainstorm do?

Use this when the user wants to brainstorm, think through an idea, explore approaches, weigh options, or says 'brainstorm' / 'let's think about'. Brainstorm is an agent skill from dcodesdev/LetterSpace. Use this when the user wants to brainstorm, think through an idea, explore approaches, weigh options, or says 'brainstorm' / 'let's think about'.

When should I use Brainstorm?

Brainstorm fits situations like: wants to brainstorm; think through an idea; explore approaches; says brainstorm / lets think about.

How do I install Brainstorm in Claude Code?

Run `npx skills add dcodesdev/LetterSpace --skill brainstorm -a claude-code`. Or copy the skill folder (.claude/skills/brainstorm in dcodesdev/LetterSpace) into .claude/skills/brainstorm in your project. Claude Code loads it when a task matches its description.

How do I install Brainstorm in Codex?

Run `npx skills add dcodesdev/LetterSpace --skill brainstorm -a codex`. Or copy the skill folder (.claude/skills/brainstorm in dcodesdev/LetterSpace) into .agents/skills/brainstorm in your project. Codex loads it when a task matches its description.

Can I use Brainstorm 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 dcodesdev/LetterSpace --skill brainstorm -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/brainstorm, .gemini/skills/brainstorm, .github/skills/brainstorm and .opencode/skills/brainstorm in your project.

What does Brainstorm need to run?

SKILL.md names no scripts, command-line tools or credentials: Brainstorm is instructions for the agent only.

Does Brainstorm access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Brainstorm 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 Brainstorm use?

Brainstorm is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Brainstorm use?

About 380 tokens (SKILL.md is roughly 1.5k 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 Brainstorm?

Skills that share tags, products or a category with Brainstorm: Brainstorming (xpinjection/test-driven-spring-boot, 112 stars), LLM Council (gcpdev/llm-council-skill, 461 stars), Typesafe AI (OpenAgentsInc/openagents, 455 stars) and Yao Meta Skill (yaojingang/yao-meta-skill, 2.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Brainstorm?

dcodesdev (a GitHub user) maintains it in dcodesdev/LetterSpace, which has 100 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 2, 2026.

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