Automatic Reply Generator Agent Skill

Generates concise, context-aware draft replies for emails, Slack messages, and chats without explanatory preamble.

Context cost
1.8k tokensestimated from the bundle, loaded when it triggers
Bundle
2 files · 7.1 kBtext throughout, nothing executable
Licence
not declarednone named by its author
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Use when the user wants to draft a reply to an incoming message such as an email, Slack/chat message, or any pasted or on-screen text. Reads the provided context, determines language, medium, relationship, and purpose only where supported by evidence, then outputs ONLY the reply text with no preamble, judgment notes, or explanation. メールやチャットなど受信したメッセージへの返信文を作成するときに使う。

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

productivityslack

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md4.8 kB · preview
--- name: reply-automatically ---
6# Reply Automatically
7
8与えられたコンテキスト(アクティブウィンドウの内容・貼り付けられたテキスト・会話履歴など)を読み、文脈を自動判定して最適な返信文を生成する。**出力は返信文のみとする。**
9
10## インプット
11
12- 返信対象となるコンテキストが渡される。典型的には以下のいずれか。
13 - アクティブウィンドウの内容(メール本文、Slack、チャット画面など)
14 - 貼り付けられたテキスト
15 - 直前の会話履歴
16- コンテキストが返信対象として不十分・空の場合は、返信文を作らず「返信対象の内容が見つかりません」とだけ返す。
17
18## 判定ロジック
19
20返信文を書く前に、コンテキストから以下の4軸を判定する。判定は内部で行い、**判定結果そのものは出力しない**。
21
22### 言語
23
24- 相手が使っている言語を特定し、返信も同じ言語で書く。
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md180 words
Files2
Licencenot declared
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈100
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
1,675
on trigger
The instruction body and 1 supporting file, read only when the skill fires.
0.89%
of a 200k window
Ten skills this size would take about 9% of the window before you open a file.
050k100k150k200k context window

1.8k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Middling. Fine to keep on in a project where you use it weekly, worth unloading in one where you never do.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

2 files, 7.1 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md4.8 kB
  • references/examples.md2.3 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 2 files you can review in full before installing.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Automatic Reply Generator · 1.8k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/automatic-reply-generator/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/automatic-reply-generator" ] && { [ ! -e .claude/skills/automatic-reply-generator ] || { mv .claude/skills/automatic-reply-generator "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/automatic-reply-generator" .claude/skills/ && echo "Installed .claude/skills/automatic-reply-generator"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add hnishim/automatic-reply-generator

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/automatic-reply-generator/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/automatic-reply-generator/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/automatic-reply-generator" ] && { [ ! -e ~/.claude/skills/automatic-reply-generator ] || { mv ~/.claude/skills/automatic-reply-generator "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/automatic-reply-generator" ~/.claude/skills/ && echo "Installed ~/.claude/skills/automatic-reply-generator" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/automatic-reply-generator/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. It appears as reply-automatically in Gemini CLI, Codex, Copilot and Grok (its own name); Claude Code lists it by the folder name, automatic-reply-generator.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referencehnishim/automatic-reply-generator

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

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