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.
Draft a cold offer as a leak, a prototype, and email one. An agent skill from aiskillstore/marketplace.
MITAuto-check passed
Install Cold Offer
$ npx skills add aiskillstore/marketplace --skill cold-offer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install aiskillstore/marketplace cold-offer --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/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cmj-hub/cold-offer .claude/skills/cold-offer && 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 "cold-offer" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/cmj-hub/cold-offer into .claude/skills/cold-offer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-offer", 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/aiskillstore/marketplace/tree/main/skills/cmj-hub/cold-offerType 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 aiskillstore/marketplace --skill cold-offer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install aiskillstore/marketplace cold-offer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cmj-hub/cold-offer .agents/skills/cold-offer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "cold-offer" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/cmj-hub/cold-offer into .agents/skills/cold-offer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-offer", 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 aiskillstore/marketplace --skill cold-offer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install aiskillstore/marketplace cold-offer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cmj-hub/cold-offer .cursor/skills/cold-offer && 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 "cold-offer" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/cmj-hub/cold-offer into .cursor/skills/cold-offer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-offer", 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/aiskillstore/marketplace.git --path skills/cmj-hub/cold-offer--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 aiskillstore/marketplace --skill cold-offer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install aiskillstore/marketplace cold-offer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cmj-hub/cold-offer .gemini/skills/cold-offer && 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 "cold-offer" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/cmj-hub/cold-offer into .gemini/skills/cold-offer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-offer", 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 aiskillstore/marketplace cold-offerInstalls 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 aiskillstore/marketplace --skill cold-offer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cmj-hub/cold-offer .github/skills/cold-offer && 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 "cold-offer" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/cmj-hub/cold-offer into .github/skills/cold-offer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-offer", 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 aiskillstore/marketplace --skill cold-offer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install aiskillstore/marketplace cold-offer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cmj-hub/cold-offer .opencode/skills/cold-offer && 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 "cold-offer" agent skill from https://github.com/aiskillstore/marketplace/tree/main/skills/cmj-hub/cold-offer into .opencode/skills/cold-offer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cold-offer", 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
cold-offer- GitHub stars
- 430
- Token cost
- ~645 tokens
- SKILL.md length
- 330 words
- Files
- 20 (incl. scripts, assets)
- Skills in repo
- 1,108
- Repo updated
- First seen
- Licence
- MIT
At a glance
Draft a cold offer as a leak, a prototype, and email one. An agent skill from aiskillstore/marketplace.
- Works in 3 steps: Leak. The finding, in words the reader… → Prototype. The short trial. One page,… → Email one. States that offer in words…
- The first outbound email should hand over a finding and a short trial
- SKILL.md covers The three parts, What email one refuses, Checklist and Run, plus 1 more section
- Runs JavaScript and Python scripts from its folder; calls python3
What it does
Cold Offer is an agent skill from aiskillstore/marketplace. Draft a cold offer as a leak, a prototype, and email one. Use when the first outbound email should hand over a finding and a short trial, and when email one must not sell the paid product.
Its SKILL.md is about 650 tokens, which your agent loads only when the skill is triggered. The skill folder holds 23 other files, including scripts and assets (for example `.claude-plugin/plugin.json`, `CONTRIBUTING.md` and `README.md`).
The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified. The licence is MIT.
When your agent uses it
- The first outbound email should hand over a finding and a short trial
- When email one must not sell the paid product
Example prompts
- “/cold-offer”
Requirements
- Python 3
- Node.js
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Leak. The finding, in words the reader already uses. One concrete miss on their public page or product. They did not ask for it.
- Prototype. The short trial. One page, one sample, or one worked slice of the fix. It shows the system works. It is not the core retainer.
- Email one. States that offer in words the reader understands. It delivers the finding. It names the prototype. It offers the full report…
What it can do on your machine
Read from SKILL.md and the folder at commit ad8daf7. 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
Ships 1 file in scripts/ (JavaScript and Python, from the files we listed), which the agent can run.
Shell commands in SKILL.md call:
python3
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
Cold Offer loads about 645 tokens when it runs. Until then it costs about 50 tokens; SKILL.md has 330 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); the scripts in this folder are not scanned.
SKILL.md
The full file from aiskillstore/marketplace at commit ad8daf7, republished under its MIT licence (© aiskillstore). 330 words, ~645 tokens.
Download SKILL.mdSave it as
.claude/skills/cold-offer/SKILL.md (or your agent's skills folder). This skill also uses 19 other files; get the full folder from GitHub.- name
- cold-offer
- description
- Draft a cold offer as a leak, a prototype, and email one. Use when the first outbound email should hand over a finding and a short trial, and when email one must not sell the paid product.
Cold offer
A cold offer is not the main service. Email one hands over work already done: a finding the buyer did not request, and a short trial of the solution. The full report is offered only if they want it. There is no meeting ask, no demo, and no pitch.
The build guide teaches a human. This pack teaches an agent.
The three parts
- Leak. The finding, in words the reader already uses. One concrete miss on their public page or product. They did not ask for it.
- Prototype. The short trial. One page, one sample, or one worked slice of the fix. It shows the system works. It is not the core retainer.
- Email one. States that offer in words the reader understands. It delivers the finding. It names the prototype. It offers the full report only if they want it.
What email one refuses
The scorer refuses email one that sells the paid product. Selling means the letter asks the reader to buy, book, or start the paid thing: retainer, demo, purchase, subscribe, checkout, or pricing of the core service.
A letter can name the finding and the short trial. It does not sell the retainer in the same breath.
A recruiter note that asks for coffee is a different letter. It is not this gate. This gate is selling the paid product.
Checklist
Copy this list and tick it in order.
- 1. Choose the finding the buyer did not request.
- 2. Fill the offer shell: leak, prototype, email one.
- 3. Run
python3 scripts/score.py --file draft.json.
Check again until the script exits 0.
Go back to step 2 if step 3 fails.
Run
python3 scripts/score.py --file examples/offer-good.json
python3 scripts/score.py --file examples/offer-sells.jsonThe good file exits 0 and prints the leak, the prototype, and email one. The sell file exits 1.
The JSON object has three strings: leak, prototype, and email_one. A broken JSON exits non-zero and does not echo the raw input.
Python 3 standard library only. No network. No send.
Shell
{
"leak": "The homepage asks for a meeting before it shows any work.",
"prototype": "A one-page sample that leads with one finding and the short trial, and stops there.",
"email_one": "Your homepage asks for a meeting before it shows any work. I wrote one page that leads with that finding. The full report is yours if you want it."
}© aiskillstore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 19 other files (scripts, assets) in skills/cmj-hub/cold-offer of aiskillstore/marketplace.
- SKILL.md
- .claude-plugin/plugin.json
- .gitignore
- CONTRIBUTING.md
- LICENSE
- README.md
- assets/card.mjs
- assets/demo.gif
- assets/demo.mjs
- assets/header.png
- assets/lockup.png
- assets/social-lockup.png
- assets/social-preview.png
- assets/spec.json
- examples/offer-good.json
- examples/offer-sells.json
- scripts/score.py
- … and 3 more
Open the folder on GitHubat commit ad8daf7
Compare with similar skills
Cold Offer 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 |
|---|---|---|---|---|---|---|
| Cold Offer this skillaiskillstore/marketplace | 430 | — | ~645 | Automated safety check: Pass | MIT | |
| Cold Emailcoreyhaines31/marketingskills | 54k | — | ~3.1k | Automated safety check: Pass | MIT | |
| Cold Emailalirezarezvani/claude-skills | 28k | 1 repos | ~3.6k | Automated safety check: Pass | MIT | |
| Cold Emailsickn33/agentic-awesome-skills | 47k | 2 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Emailscoreyhaines31/marketingskills | 54k | 1 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Emailasgeirtj/system_prompts_leaks | 69k | — | ~3.5k | Automated safety check: Pass | CC0-1.0 |
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Questions about Cold Offer
What does Cold Offer do?
Draft a cold offer as a leak, a prototype, and email one. An agent skill from aiskillstore/marketplace. Cold Offer is an agent skill from aiskillstore/marketplace. Draft a cold offer as a leak, a prototype, and email one.
When should I use Cold Offer?
Cold Offer fits situations like: the first outbound email should hand over a finding and a short trial; when email one must not sell the paid product.
How do I install Cold Offer in Claude Code?
Run `npx skills add aiskillstore/marketplace --skill cold-offer -a claude-code`. Or copy the skill folder (skills/cmj-hub/cold-offer in aiskillstore/marketplace) into .claude/skills/cold-offer in your project. Claude Code loads it when a task matches its description.
How do I install Cold Offer in Codex?
Run `npx skills add aiskillstore/marketplace --skill cold-offer -a codex`. Or copy the skill folder (skills/cmj-hub/cold-offer in aiskillstore/marketplace) into .agents/skills/cold-offer in your project. Codex loads it when a task matches its description.
Can I use Cold Offer 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 aiskillstore/marketplace --skill cold-offer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cold-offer, .gemini/skills/cold-offer, .github/skills/cold-offer and .opencode/skills/cold-offer in your project.
What does Cold Offer need to run?
Going by SKILL.md and its folder, Cold Offer needs JavaScript and Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3; Node.js.
Does Cold Offer 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 Cold Offer 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Cold Offer use?
Cold Offer is published under the MIT licence (from the LICENSE file in the skill folder). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Cold Offer use?
About 645 tokens (SKILL.md is roughly 2.6k 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 Cold Offer?
Skills that share tags, products or a category with Cold Offer: Cold Email (coreyhaines31/marketingskills, 54k stars), Cold Email (alirezarezvani/claude-skills, 28k stars), Cold Email (sickn33/agentic-awesome-skills, 47k stars) and Emails (coreyhaines31/marketingskills, 54k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Cold Offer?
aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,108 skills in this directory. The repository was last updated on October 7, 2026.
Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.