Internal Communications Writer
anthropics/skills
A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill…
A skill your agent uses when the user says 'newsletter', 'email newsletter', 'weekly digest', 'subscriber growth', 'open rates', or needs subject lines, content structure, sponsorship placement, and…
Install Memstack Content Newsletter
$ npx skills add cwinvestments/memstack --skill memstack-content-newsletter -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install cwinvestments/memstack memstack-content-newsletter --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/cwinvestments/memstack.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/content/newsletter .claude/skills/memstack-content-newsletter && rm -rf skills-srcUse ~/.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/
Install the "memstack-content-newsletter" agent skill from https://github.com/cwinvestments/memstack/tree/master/skills/content/newsletter into .claude/skills/memstack-content-newsletter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memstack-content-newsletter", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/cwinvestments/memstack/tree/master/skills/content/newsletterType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add cwinvestments/memstack --skill memstack-content-newsletter -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install cwinvestments/memstack memstack-content-newsletter --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cwinvestments/memstack.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/content/newsletter .agents/skills/memstack-content-newsletter && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "memstack-content-newsletter" agent skill from https://github.com/cwinvestments/memstack/tree/master/skills/content/newsletter into .agents/skills/memstack-content-newsletter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memstack-content-newsletter", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add cwinvestments/memstack --skill memstack-content-newsletter -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install cwinvestments/memstack memstack-content-newsletter --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cwinvestments/memstack.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/content/newsletter .cursor/skills/memstack-content-newsletter && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "memstack-content-newsletter" agent skill from https://github.com/cwinvestments/memstack/tree/master/skills/content/newsletter into .cursor/skills/memstack-content-newsletter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memstack-content-newsletter", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/cwinvestments/memstack.git --path skills/content/newsletter--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add cwinvestments/memstack --skill memstack-content-newsletter -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install cwinvestments/memstack memstack-content-newsletter --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cwinvestments/memstack.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/content/newsletter .gemini/skills/memstack-content-newsletter && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "memstack-content-newsletter" agent skill from https://github.com/cwinvestments/memstack/tree/master/skills/content/newsletter into .gemini/skills/memstack-content-newsletter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memstack-content-newsletter", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install cwinvestments/memstack memstack-content-newsletterInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add cwinvestments/memstack --skill memstack-content-newsletter -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/cwinvestments/memstack.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/content/newsletter .github/skills/memstack-content-newsletter && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "memstack-content-newsletter" agent skill from https://github.com/cwinvestments/memstack/tree/master/skills/content/newsletter into .github/skills/memstack-content-newsletter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memstack-content-newsletter", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add cwinvestments/memstack --skill memstack-content-newsletter -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install cwinvestments/memstack memstack-content-newsletter --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cwinvestments/memstack.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/content/newsletter .opencode/skills/memstack-content-newsletter && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "memstack-content-newsletter" agent skill from https://github.com/cwinvestments/memstack/tree/master/skills/content/newsletter into .opencode/skills/memstack-content-newsletter/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memstack-content-newsletter", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
memstack-content-newsletter- GitHub stars
- 423
- Token cost
- ~2.4k tokens
- SKILL.md length
- 983 words
- Files
- 1
- Skills in repo
- 87
- Repo updated
- First seen
- Licence
- Proprietary
At a glance
A skill your agent uses when the user says 'newsletter', 'email newsletter', 'weekly digest', 'subscriber growth', 'open rates', or needs subject lines, content structure, sponsorship placement, and…
- Works in 7 steps: Gather Newsletter Requirements → Write the Subject Line → Design Section Structure → …
- The user says newsletter
- SKILL.md covers Activation, Context Guard, Common Mistakes and Protocol, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Memstack Content Newsletter is an agent skill from cwinvestments/memstack. Use this skill when the user says 'newsletter', 'email newsletter', 'weekly digest', 'subscriber growth', 'open rates', or needs subject lines, content structure, sponsorship placement, and growth tactics for email newsletters. Do NOT use for lead magnets or content pipelines.
Its SKILL.md is about 2.4k 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 Writing & Content, covering Newsletters. The repository describes itself as: Structured skill framework for Claude Code. 130 skills, persistent memory, TokenStack compression, localhost dashboard with 3-agent runner, real-time streaming, MCP tools.
When your agent uses it
- The user says newsletter
- Email newsletter
- Subscriber growth
- Needs subject lines
Example prompts
- “newsletter”
- “email newsletter”
- “weekly digest”
- “/memstack-content-newsletter”
Workflow steps
7 steps, taken from the step headings in SKILL.md.
- Gather Newsletter Requirements
- Write the Subject Line
- Design Section Structure
- Write the Edition
- Link Placement Strategy
- Growth Tactics
- Scheduling & Send Optimization
What it can do on your machine
Read from SKILL.md and the folder at commit 00370ce. 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 (its code samples are markdown).
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
Memstack Content Newsletter loads about 2.4k tokens when it runs. Until then it costs about 76 tokens; SKILL.md has 983 words of instructions outside code blocks.
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
Its licence (Proprietary) doesn't allow us to republish the file, so here is its outline and opening line. It has 983 words (~2,446 tokens).
“Produces an email newsletter edition with subject line formulas, section structure, personalization, link placement strategy, growth tactics, and engagement optimization.”
- name
- memstack-content-newsletter
- version
- 1.0.0
- license
- Proprietary, MemStack™ Pro by CW Affiliate Investments LLC. See LICENSE.txt
Files
Just SKILL.md in skills/content/newsletter of cwinvestments/memstack.
Open the folder on GitHubat commit 00370ce
Compare with similar skills
Memstack Content Newsletter 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Memstack Content Newsletter this skillcwinvestments/memstack | 423 | — | ~2.4k | Automated safety check: Pass | Proprietary | |
| Internal Communications Writeranthropics/skills | 180k | 38 repos | ~378 | Automated safety check: Pass | Apache-2.0 | |
| Clarityaddyosmani/clarity | 269 | 1 repos | ~1.9k | Automated safety check: Pass | MIT | |
| News Aggregator Skillcclank/news-aggregator-skill | 1.3k | — | ~2.1k | Automated safety check: Pass | None | |
| Changelog Social RecapFlorianBruniaux/claude-code-ultimate-guide | 6.1k | — | ~1.8k | Automated safety check: Notes | CC-BY-SA-4.0 | |
| Newsletter Voicecharlie947/social-media-skills | 3.8k | — | ~2.5k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Memstack Content Newsletter
What does Memstack Content Newsletter do?
A skill your agent uses when the user says 'newsletter', 'email newsletter', 'weekly digest', 'subscriber growth', 'open rates', or needs subject lines, content structure, sponsorship placement, and…. Memstack Content Newsletter is an agent skill from cwinvestments/memstack. Use this skill when the user says 'newsletter', 'email newsletter', 'weekly digest', 'subscriber growth', 'open rates', or needs subject lines, content structure, sponsorship placement, and growth tactics for email newsletters.
When should I use Memstack Content Newsletter?
Memstack Content Newsletter fits situations like: the user says newsletter; email newsletter; subscriber growth; needs subject lines.
How do I install Memstack Content Newsletter in Claude Code?
Run `npx skills add cwinvestments/memstack --skill memstack-content-newsletter -a claude-code`. Or copy the skill folder (skills/content/newsletter in cwinvestments/memstack) into .claude/skills/memstack-content-newsletter in your project. Claude Code loads it when a task matches its description.
How do I install Memstack Content Newsletter in Codex?
Run `npx skills add cwinvestments/memstack --skill memstack-content-newsletter -a codex`. Or copy the skill folder (skills/content/newsletter in cwinvestments/memstack) into .agents/skills/memstack-content-newsletter in your project. Codex loads it when a task matches its description.
Can I use Memstack Content Newsletter 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 cwinvestments/memstack --skill memstack-content-newsletter -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/memstack-content-newsletter, .gemini/skills/memstack-content-newsletter, .github/skills/memstack-content-newsletter and .opencode/skills/memstack-content-newsletter in your project.
What does Memstack Content Newsletter need to run?
SKILL.md names no scripts, command-line tools or credentials: Memstack Content Newsletter is instructions for the agent only.
Does Memstack Content Newsletter 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 Memstack Content Newsletter 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 Memstack Content Newsletter use?
Memstack Content Newsletter carries a proprietary licence (declared in SKILL.md). It is published on GitHub, but it is not open source: read the licence file before using or sharing it.
How many tokens does Memstack Content Newsletter use?
About 2.4k tokens (SKILL.md is roughly 9.8k 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 Memstack Content Newsletter?
Skills that share tags, products or a category with Memstack Content Newsletter: Internal Communications Writer (anthropics/skills, 180k stars), Clarity (addyosmani/clarity, 269 stars), News Aggregator Skill (cclank/news-aggregator-skill, 1.3k stars) and Changelog Social Recap (FlorianBruniaux/claude-code-ultimate-guide, 6.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Memstack Content Newsletter?
cwinvestments (a GitHub user) maintains it in cwinvestments/memstack, which has 423 GitHub stars. The repository holds 87 skills in this directory. The repository was last updated on September 26, 2026.
Source: cwinvestments/memstack on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.