Messaging Ab Tester
gooseworks-ai/goose-skills
Generate 3-5 messaging variants for a value proposition, design structured A/B tests, and analyze results to determine which framing resonates most with ICP.
Draft ONE cold-outreach message from a signal + persona + channel: a single cold email, a LinkedIn note, or a follow-up.
Install Atomic Message
$ npx skills add extruct-ai/gtm-skills --skill atomic-message -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install extruct-ai/gtm-skills atomic-message --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/extruct-ai/gtm-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/atomic-message .claude/skills/atomic-message && 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 "atomic-message" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/atomic-message into .claude/skills/atomic-message/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "atomic-message", 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/extruct-ai/gtm-skills/tree/main/skills/atomic-messageType 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 extruct-ai/gtm-skills --skill atomic-message -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install extruct-ai/gtm-skills atomic-message --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/atomic-message .agents/skills/atomic-message && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "atomic-message" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/atomic-message into .agents/skills/atomic-message/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "atomic-message", 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 extruct-ai/gtm-skills --skill atomic-message -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install extruct-ai/gtm-skills atomic-message --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/atomic-message .cursor/skills/atomic-message && 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 "atomic-message" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/atomic-message into .cursor/skills/atomic-message/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "atomic-message", 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/extruct-ai/gtm-skills.git --path skills/atomic-message--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 extruct-ai/gtm-skills --skill atomic-message -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install extruct-ai/gtm-skills atomic-message --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/atomic-message .gemini/skills/atomic-message && 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 "atomic-message" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/atomic-message into .gemini/skills/atomic-message/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "atomic-message", 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 extruct-ai/gtm-skills atomic-messageInstalls 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 extruct-ai/gtm-skills --skill atomic-message -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/atomic-message .github/skills/atomic-message && 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 "atomic-message" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/atomic-message into .github/skills/atomic-message/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "atomic-message", 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 extruct-ai/gtm-skills --skill atomic-message -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install extruct-ai/gtm-skills atomic-message --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/atomic-message .opencode/skills/atomic-message && 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 "atomic-message" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/atomic-message into .opencode/skills/atomic-message/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "atomic-message", 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
atomic-message- GitHub stars
- 109
- Token cost
- ~952 tokens
- SKILL.md length
- 446 words
- Files
- 2 (incl. references)
- Skills in repo
- 20
- Repo updated
- First seen
- Licence
- None found
At a glance
Draft ONE cold-outreach message from a signal + persona + channel: a single cold email, a LinkedIn note, or a follow-up.
- Works in 5 steps: Read the context file → Pick the angle → Draft for the channel → …
- : write a message
- SKILL.md covers Inputs, Workflow and Reference
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Atomic Message is an agent skill from extruct-ai/gtm-skills. Draft ONE cold-outreach message from a signal + persona + channel: a single cold email, a LinkedIn note, or a follow-up. Generates one primary draft plus 1-2 variants, then runs a self-check lint. Reads voice, sender identity, positioning, proof, and banned words from the company context file. This is the single-message craft engine; it does NOT build sequences, cadences, or multi-touch arcs (email-prompt-building owns sequencing). Triggers on: "write a message", "draft a message", "atomic message", "write a…
Its SKILL.md is about 950 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/craft.md`).
It sits in Sales & Support, covering Cold outreach, Verification before completion and Linting and formatting. It works with LinkedIn.
When your agent uses it
- : write a message
- Draft a message
- Write a single email
- Write a linkedin message
Example prompts
- “write a message”
- “draft a message”
- “atomic message”
- “/atomic-message”
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Read the context file
- Pick the angle
- Draft for the channel
- Self-check (lint)
- Emit
What it can do on your machine
Read from SKILL.md and the folder at commit 34406cb. 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
Atomic Message loads about 952 tokens when it runs, and up to ~2.6k if it reads all its reference files. Until then it costs about 189 tokens; SKILL.md has 446 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 446 words (~952 tokens).
“Draft one outreach message at a time: a cold email, a LinkedIn note, or a follow-up. Generate a primary draft plus 1-2 variants, then lint against the craft rules before emitting.”
- name
- atomic-message
Files
SKILL.md and 1 other file (references) in skills/atomic-message of extruct-ai/gtm-skills.
- SKILL.md
- references/craft.md
Open the folder on GitHubat commit 34406cb
Compare with similar skills
Atomic Message 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 |
|---|---|---|---|---|---|---|
| Atomic Message this skillextruct-ai/gtm-skills | 109 | — | ~952 | Automated safety check: Pass | None | |
| Messaging Ab Testergooseworks-ai/goose-skills | 1.2k | 1 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Linkedin Outbound AngleOthmane-Khadri/YALC-the-GTM-operating-system | 317 | — | ~3.5k | Automated safety check: Pass | MIT | |
| Prospectingcoreyhaines31/marketingskills | 54k | — | ~4.9k | Automated safety check: Pass | MIT | |
| Sales OsromangojiberryAI/gojiberryai-sales-os | 138 | — | ~2k | Automated safety check: Pass | MIT | |
| Cold Outreach Personalizeraiskilloftheweek/claude-ai-skill-of-the-week | 146 | — | ~2.6k | Automated safety check: Pass | None |
Similar skills
Linkedin Outbound Angle
Othmane-Khadri/YALC-the-GTM-operating-system
Analyzes a LinkedIn profile and identifies the perfect outbound attack angle for personalized outreach.
Prospecting
coreyhaines31/marketingskills
When the user wants to find, qualify, and build a list of prospects to reach out to, across B2B SaaS, general B2B, or local small businesses.
Sales Os
romangojiberryAI/gojiberryai-sales-os
A complete outbound sales department in one skill. An agent skill from romangojiberryAI/gojiberryai-sales-os.
Cold Outreach Personalizer
aiskilloftheweek/claude-ai-skill-of-the-week
Generates hyper-personalized cold outreach messages (email, LinkedIn DM, connection request) from raw prospect research.
Cold Email
coreyhaines31/marketingskills
Write and run B2B cold outbound that gets replies, from cold emails and follow-ups to sending setup, LinkedIn, multichannel cadences, and reply handling.
More from extruct-ai/gtm-skills
All 20 skills in this repoAccount Research
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Deep-research a single target account into a decision-ready dossier: the entity tree, the buying units and decision-makers, live signals (open/closed roles, leadership moves, news, tech stack), and…
Campaign Sending
extruct-ai/gtm-skills
Upload finalized emails for sequencing and sending. An agent skill from extruct-ai/gtm-skills.
Context Building
extruct-ai/gtm-skills
Build and maintain a global company context file that all other GTM skills read from.
Email Generation
extruct-ai/gtm-skills
Render a cold-outreach email sequence from a fixed template set and a contact CSV whose input fields are already filled.
Email Response Simulation
extruct-ai/gtm-skills
Deep persona simulation and skeptical buyer review for cold emails.
Email Search
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Get verified emails and phones for contacts found by people-search.
Related
Works with
Categories
Questions about Atomic Message
What does Atomic Message do?
Draft ONE cold-outreach message from a signal + persona + channel: a single cold email, a LinkedIn note, or a follow-up. Atomic Message is an agent skill from extruct-ai/gtm-skills. Draft ONE cold-outreach message from a signal + persona + channel: a single cold email, a LinkedIn note, or a follow-up.
When should I use Atomic Message?
Atomic Message fits situations like: : write a message; draft a message; write a single email; write a linkedin message.
How do I install Atomic Message in Claude Code?
Run `npx skills add extruct-ai/gtm-skills --skill atomic-message -a claude-code`. Or copy the skill folder (skills/atomic-message in extruct-ai/gtm-skills) into .claude/skills/atomic-message in your project. Claude Code loads it when a task matches its description.
How do I install Atomic Message in Codex?
Run `npx skills add extruct-ai/gtm-skills --skill atomic-message -a codex`. Or copy the skill folder (skills/atomic-message in extruct-ai/gtm-skills) into .agents/skills/atomic-message in your project. Codex loads it when a task matches its description.
Can I use Atomic Message 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 extruct-ai/gtm-skills --skill atomic-message -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/atomic-message, .gemini/skills/atomic-message, .github/skills/atomic-message and .opencode/skills/atomic-message in your project.
What does Atomic Message need to run?
SKILL.md names no scripts, command-line tools or credentials: Atomic Message is instructions for the agent only.
Does Atomic Message 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 Atomic Message 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 Atomic Message use?
No licence was found for Atomic Message or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Atomic Message use?
About 952 tokens (SKILL.md is roughly 3.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.6k tokens, read only when the agent opens those files.
What are the alternatives to Atomic Message?
Skills that share tags, products or a category with Atomic Message: Messaging Ab Tester (gooseworks-ai/goose-skills, 1.2k stars), Linkedin Outbound Angle (Othmane-Khadri/YALC-the-GTM-operating-system, 317 stars), Prospecting (coreyhaines31/marketingskills, 54k stars) and Sales Os (romangojiberryAI/gojiberryai-sales-os, 138 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Atomic Message?
extruct-ai (a GitHub organization) maintains it in extruct-ai/gtm-skills, which has 109 GitHub stars. The repository holds 20 skills in this directory. The repository was last updated on September 28, 2026.
Source: extruct-ai/gtm-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.