Agent skill

Inbox Reply

Manage and reply to lead responses in Instantly unibox. An agent skill from extruct-ai/gtm-skills.

No licenceAuto-check passedProductivity & Automation

Install Inbox Reply

skills CLI

$ npx skills add extruct-ai/gtm-skills --skill inbox-reply -a claude-code

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

GitHub CLI

$ gh skill install extruct-ai/gtm-skills inbox-reply --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/extruct-ai/gtm-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/inbox-reply .claude/skills/inbox-reply && 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/

Paste into Claude Code

Install the "inbox-reply" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/inbox-reply into .claude/skills/inbox-reply/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "inbox-reply", 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

$skill-installer install https://github.com/extruct-ai/gtm-skills/tree/main/skills/inbox-reply

Type 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.

skills CLI

$ npx skills add extruct-ai/gtm-skills --skill inbox-reply -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install extruct-ai/gtm-skills inbox-reply --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/inbox-reply .agents/skills/inbox-reply && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "inbox-reply" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/inbox-reply into .agents/skills/inbox-reply/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "inbox-reply", 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.

skills CLI

$ npx skills add extruct-ai/gtm-skills --skill inbox-reply -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install extruct-ai/gtm-skills inbox-reply --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/inbox-reply .cursor/skills/inbox-reply && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "inbox-reply" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/inbox-reply into .cursor/skills/inbox-reply/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "inbox-reply", 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

$ gemini skills install https://github.com/extruct-ai/gtm-skills.git --path skills/inbox-reply

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add extruct-ai/gtm-skills --skill inbox-reply -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install extruct-ai/gtm-skills inbox-reply --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/inbox-reply .gemini/skills/inbox-reply && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "inbox-reply" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/inbox-reply into .gemini/skills/inbox-reply/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "inbox-reply", 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.

GitHub CLI

$ gh skill install extruct-ai/gtm-skills inbox-reply

Installs 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).

skills CLI

$ npx skills add extruct-ai/gtm-skills --skill inbox-reply -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/inbox-reply .github/skills/inbox-reply && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "inbox-reply" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/inbox-reply into .github/skills/inbox-reply/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "inbox-reply", 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.

skills CLI

$ npx skills add extruct-ai/gtm-skills --skill inbox-reply -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install extruct-ai/gtm-skills inbox-reply --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/extruct-ai/gtm-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/inbox-reply .opencode/skills/inbox-reply && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "inbox-reply" agent skill from https://github.com/extruct-ai/gtm-skills/tree/main/skills/inbox-reply into .opencode/skills/inbox-reply/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "inbox-reply", 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: inbox-reply
GitHub stars: 109
Token cost: ~1.2k tokens
SKILL.md length: 448 words
Files: 2 (incl. references)
Skills in repo: 20
Repo updated: Sep 28, 2026
First seen: Oct 7, 2026
Licence: None found

At a glance

Manage and reply to lead responses in Instantly unibox. An agent skill from extruct-ai/gtm-skills.

Works in 7 steps: Fetch unread replies → Load full threads → Classify reply intent → …
: reply to leads
SKILL.md covers Environment, Inputs, Workflow and Reference
Reaches api.instantly.ai; needs INSTANTLY_API_KEY

What it does

Inbox Reply is an agent skill from extruct-ai/gtm-skills. Manage and reply to lead responses in Instantly unibox. Fetches unread conversations, classifies reply intent, drafts contextual responses, and sends replies via Instantly API. Fits after campaign-sending in the GTM pipeline. Triggers on: "reply to leads", "inbox replies", "instantly inbox", "unibox", "respond to replies", "manage replies", "instantly replies", "check inbox", "lead replies", "answer leads".

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/instantly-inbox-api.md`).

It sits in Productivity & Automation, covering Email management and Go-to-market strategy.

When your agent uses it

: reply to leads
Instantly inbox
Respond to replies
Instantly replies

Example prompts

“reply to leads”
“inbox replies”
“instantly inbox”
“/inbox-reply”

Requirements

A credential in INSTANTLY_API_KEY

Workflow steps

7 steps, taken from the step headings in SKILL.md.

Fetch unread replies
Load full threads
Classify reply intent
Draft replies
Confirm and send
Post-reply housekeeping
Skip and defer handling

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
Hosts in commands or code, which the agent is likely to contact:
- api.instantly.ai
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
- INSTANTLY_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Inbox Reply loads about 1.2k tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 106 tokens; SKILL.md has 448 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~106
When it runs · the whole SKILL.md, loaded when a task matches: ~1.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~2.2k

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 448 words (~1,223 tokens).

“Manage and reply to lead responses in the email sequencing inbox.”

— opening of SKILL.md by extruct-ai

name: inbox-reply

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file (references) in skills/inbox-reply of extruct-ai/gtm-skills.

SKILL.md
references/instantly-inbox-api.md

Open the folder on GitHubat commit 34406cb

Compare with similar skills

Inbox Reply 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.

Inbox Reply compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Inbox Reply this skillextruct-ai/gtm-skills	109	—	~1.2k	Automated safety check: Pass	None	9 days ago
Gtm Board Standupmarkfulton/ai-employees	495	—	~19k	Automated safety check: Pass	MIT	today
Process Inboxtelegramdesktop/tdesktop	33k	2 repos	~4.5k	Automated safety check: Pass	GPL-3.0	today
Continuetelegramdesktop/tdesktop	33k	2 repos	~9.4k	Automated safety check: Pass	GPL-3.0	today
Garden Inboxpaperclipai/paperclip	99k	—	~1.1k	Automated safety check: Pass	MIT	today
Career-Ops Gmail Lead Plugincareer-ops-hq/career-ops	74k	—	~233	Automated safety check: Notes	MIT	today

Similar skills

Gtm Board Standup
markfulton/ai-employees
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495 GitHub stars~19k tokensUpdated today
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Process Inbox
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33k GitHub starsUsed in 2 repos~4.5k tokens
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33k GitHub starsUsed in 2 repos~9.4k tokens
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Garden Inbox
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Scan a Paperclip user's Mine inbox, classify reversible archive candidates, request checkbox confirmation, and archive only accepted selections.
99k GitHub stars~1.1k tokensUpdated today
Productivity & AutomationAuto-check passed
Career-Ops Gmail Lead Plugin
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Pulls job leads from a Gmail label into the career-ops pipeline, extracting job URLs from DMARC-passing emails and de-duplicating against existing leads.
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Productivity & AutomationAuto-check: notes
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Context Building
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Email Generation
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Email Response Simulation
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Email Search
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Questions about Inbox Reply

What does Inbox Reply do?

Manage and reply to lead responses in Instantly unibox. An agent skill from extruct-ai/gtm-skills. Inbox Reply is an agent skill from extruct-ai/gtm-skills. Manage and reply to lead responses in Instantly unibox.

When should I use Inbox Reply?

Inbox Reply fits situations like: : reply to leads; instantly inbox; respond to replies; instantly replies.

How do I install Inbox Reply in Claude Code?

Run `npx skills add extruct-ai/gtm-skills --skill inbox-reply -a claude-code`. Or copy the skill folder (skills/inbox-reply in extruct-ai/gtm-skills) into .claude/skills/inbox-reply in your project. Claude Code loads it when a task matches its description.

How do I install Inbox Reply in Codex?

Run `npx skills add extruct-ai/gtm-skills --skill inbox-reply -a codex`. Or copy the skill folder (skills/inbox-reply in extruct-ai/gtm-skills) into .agents/skills/inbox-reply in your project. Codex loads it when a task matches its description.

Can I use Inbox Reply 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 inbox-reply -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/inbox-reply, .gemini/skills/inbox-reply, .github/skills/inbox-reply and .opencode/skills/inbox-reply in your project.

What does Inbox Reply need to run?

Going by SKILL.md and its folder, Inbox Reply needs credentials named INSTANTLY_API_KEY. Our summary lists: A credential in INSTANTLY_API_KEY.

Does Inbox Reply access the network?

SKILL.md names 1 domain. In commands or code: api.instantly.ai; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Inbox Reply 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 Inbox Reply use?

No licence was found for Inbox Reply or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Inbox Reply use?

About 1.2k tokens (SKILL.md is roughly 4.9k 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 964 tokens, read only when the agent opens those files.

What are the alternatives to Inbox Reply?

Skills that share tags, products or a category with Inbox Reply: Gtm Board Standup (markfulton/ai-employees, 495 stars), Process Inbox (telegramdesktop/tdesktop, 33k stars), Continue (telegramdesktop/tdesktop, 33k stars) and Garden Inbox (paperclipai/paperclip, 99k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Inbox Reply?

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.

Install Inbox Reply

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

More from extruct-ai/gtm-skills

Related

Questions about Inbox Reply