Agent skill

Email Drafter

by skrun-dev in skrun-dev/skrun

Draft professional emails based on context, tone, and recipient.

MITAuto-check passedWriting & Content

Install Email Drafter

skills CLI
$ npx skills add skrun-dev/skrun --skill email-drafter -a claude-code

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

GitHub CLI
$ gh skill install skrun-dev/skrun email-drafter --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/skrun-dev/skrun.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agents/email-drafter .claude/skills/email-drafter && 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
email-drafter
GitHub stars
210
Token cost
~337 tokens
SKILL.md length
169 words
Files
2
Skills in repo
14
Repo updated
First seen
Licence
MIT

At a glance

Draft professional emails based on context, tone, and recipient.

  • Works in 4 steps: Read the context of the email (what it's… → Match the requested tone: formal,… → Adapt language to the recipient… → …
  • Composing business emails
  • SKILL.md covers Instructions, Output Format, Tone Guidelines and Examples
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Email Drafter is an agent skill from skrun-dev/skrun. Draft professional emails based on context, tone, and recipient. Use for composing business emails.

Its SKILL.md is about 340 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `agent.yaml`).

It sits in Writing & Content, covering Email writing. The repository describes itself as: Deploy any Agent Skill as an API via POST /run. The open-source multi-model alternative to Claude Managed Agents, Microsoft Foundry & Mistral/Koyeb — works with any LLM. The licence is MIT.

When your agent uses it

  • Composing business emails
  • Tasks that involve Email writing

Example prompts

  • “/email-drafter”

Workflow steps

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

  1. Read the context of the email (what it's about, why it's being sent)
  2. Match the requested tone: formal, casual, or friendly
  3. Adapt language to the recipient (colleague, client, executive, etc.)
  4. Always include a clear call to action

What it can do on your machine

Read from SKILL.md and the folder at commit b1d963b. 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

Email Drafter loads about 337 tokens when it runs. Until then it costs about 28 tokens; SKILL.md has 169 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~28
When it runs · the whole SKILL.md, loaded when a task matches
~337

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 skrun-dev/skrun at commit b1d963b, republished under its MIT licence (© skrun-dev). 169 words, ~337 tokens.

Download SKILL.mdSave it as .claude/skills/email-drafter/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
email-drafter
description
Draft professional emails based on context, tone, and recipient. Use for composing business emails.

Email Drafter Agent

You are a professional email writing assistant. Draft emails that are clear, appropriate for the tone, and include a compelling call to action.

Instructions

  1. Read the context of the email (what it's about, why it's being sent)
  2. Match the requested tone: formal, casual, or friendly
  3. Adapt language to the recipient (colleague, client, executive, etc.)
  4. Always include a clear call to action

Output Format

Return a JSON object with:

  • subject: A concise, descriptive subject line (< 60 chars)
  • body: The full email body (greeting, content, sign-off)
  • call_to_action: The specific action you want the recipient to take

Tone Guidelines

  • formal: Professional language, no contractions, structured paragraphs
  • casual: Conversational, contractions OK, shorter sentences
  • friendly: Warm, personal, uses first names, emoji OK sparingly

Examples

Context: "Follow up on proposal sent last week" Tone: formal Recipient: "VP of Engineering at Acme Corp" → Subject: "Follow-Up: Technical Proposal for Acme Corp" → Body: Professional follow-up with reference to key benefits → CTA: "Would you be available for a 30-minute call this Thursday?"

© skrun-dev, 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 1 other file in agents/email-drafter of skrun-dev/skrun.

  • SKILL.md
  • agent.yaml

Open the folder on GitHubat commit b1d963b

Compare with similar skills

Email Drafter 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.

Email Drafter compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Email Drafter this skillskrun-dev/skrun210—~337Automated safety check: PassMIT
End-of-Life Announcement Writergetcrew44/crew44356—~3.1kAutomated safety check: PassMIT
Write Like Me Bootstrapjxnl/personal-monorepo-template562—~1.1kAutomated safety check: PassNone
Email Voice Profileyc-software/qm15k—~856Automated safety check: PassMIT
Email Opsaffaan-m/ECC274k1 repos~1.1kAutomated safety check: PassMIT
Compose Outreachw95/awesome-claude-corporate-skills235—~1.4kAutomated safety check: PassMIT

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Questions about Email Drafter

What does Email Drafter do?

Draft professional emails based on context, tone, and recipient. Email Drafter is an agent skill from skrun-dev/skrun. Draft professional emails based on context, tone, and recipient.

When should I use Email Drafter?

Email Drafter fits situations like: composing business emails; tasks that involve Email writing.

How do I install Email Drafter in Claude Code?

Run `npx skills add skrun-dev/skrun --skill email-drafter -a claude-code`. Or copy the skill folder (agents/email-drafter in skrun-dev/skrun) into .claude/skills/email-drafter in your project. Claude Code loads it when a task matches its description.

How do I install Email Drafter in Codex?

Run `npx skills add skrun-dev/skrun --skill email-drafter -a codex`. Or copy the skill folder (agents/email-drafter in skrun-dev/skrun) into .agents/skills/email-drafter in your project. Codex loads it when a task matches its description.

Can I use Email Drafter 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 skrun-dev/skrun --skill email-drafter -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/email-drafter, .gemini/skills/email-drafter, .github/skills/email-drafter and .opencode/skills/email-drafter in your project.

What does Email Drafter need to run?

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

Does Email Drafter 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 Email Drafter 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 Email Drafter use?

Email Drafter 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 Email Drafter use?

About 337 tokens (SKILL.md is roughly 1.3k 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 Email Drafter?

Skills that share tags, products or a category with Email Drafter: End-of-Life Announcement Writer (getcrew44/crew44, 356 stars), Write Like Me Bootstrap (jxnl/personal-monorepo-template, 562 stars), Email Voice Profile (yc-software/qm, 15k stars) and Email Ops (affaan-m/ECC, 274k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Email Drafter?

skrun-dev (a GitHub organization) maintains it in skrun-dev/skrun, which has 210 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on September 22, 2026.

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