Plugin

Customerio Pack

Claude Code skill pack for Customer.io (24 skills)

Type: Plugin
Repository: jeremylongshore/tons-of-skills-marketplace
GitHub stars: 2.8k
License: MIT
Repo last updated: Sep 27, 2026
Source file: plugins/saas-packs/customerio-pack/.claude-plugin/plugin.json
Version: 1.14.0
Author: Jeremy Longshore

What Customerio Pack is

Customerio Pack is a plugin published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”

A plugin is a package that bundles skills, slash commands, subagents, hooks, and MCP connectors so they install together. Plugins are plain files with a manifest at .claude-plugin/plugin.json, and they work in both Claude Code and Claude Cowork.

Installing Customerio Pack adds everything it ships in one step. Connectors inside a plugin still need to be connected separately, and hooks and subagents only run in Cowork and Claude Code, not in regular chat.

How to install Customerio Pack

Claude Code

Add the repository as a plugin marketplace: claude plugin marketplace add jeremylongshore/tons-of-skills-marketplace
Install the plugin: claude plugin install customerio-pack@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json.
Restart the session if the new skills or commands don't appear straight away.

Claude Cowork

Open Customize → Plugins and choose Add marketplace.
Enter jeremylongshore/tons-of-skills-marketplace (the owner/repo shorthand works for GitHub).
Find Customerio Pack in the list, click Install, then connect any connectors it needs from its Connectors tab.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from plugins/saas-packs/customerio-pack/.claude-plugin/plugin.json, shared under the repository's MIT license. Read the full file on GitHub.

> 24 production-grade Claude Code skills for Customer.io marketing automation (email, push, SMS, in-app messaging)

Build, debug, and scale Customer.io integrations with real customerio-node SDK code -- TrackClient for behavioral data, APIClient for transactional messages and broadcasts, webhook handling, and enterprise reliability patterns.

Installation

/plugin install customerio-pack@claude-code-plugins-plus

What You Get

Real Customer.io code in every skill -- not stubs. Each skill contains working TypeScript using the actual customerio-node SDK (TrackClient, APIClient, SendEmailRequest, RegionUS/RegionEU), production error handling, and Customer.io-specific gotchas.

Skills (24)

Standard (S01-S12) -- Setup Through Production

Pro (P13-P18) -- DevOps and Operations

Flagship (F19-F24) -- Enterprise Scale

Customer.io API Coverage

Quick Start

import { TrackClient, APIClient, SendEmailRequest, RegionUS } from "customerio-node";

// Track API -- identify users and track events
const cio = new TrackClient(siteId, trackApiKey, { region: RegionUS });
await cio.identify("user-123", { email: "[email protected]", plan: "pro" });
await cio.track("user-123", { name: "signed_up", data: { method: "google" } });

// App API -- send transactional messages
const api = new APIClient(appApiKey, { region: RegionUS });
await api.sendEmail(new SendEmailRequest({
  to: "[email protected]",
  transactional_message_id: "1",
  message_data: { name: "Jane" },
  identifiers: { id: "user-123" },
}));

Key Concepts

Two API keys: Track API Key (identify/track) and App API Key (transactional/broadcasts) -- different credentials
Timestamps: Always Unix seconds (Math.floor(Date.now() / 1000)), never milliseconds
Regions: US (RegionUS) or EU (RegionEU) -- must match your account
Event names: snake_case, case-sensitive, must match campaign triggers exactly
Identify before track: Always call identify() before track() for a user

License

MIT

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Customerio Pack?

Customerio Pack is a plugin for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Claude Code skill pack for Customer.io (24 skills)

How do I install Customerio Pack in Claude Code?

Add the repository as a plugin marketplace: claude plugin marketplace add jeremylongshore/tons-of-skills-marketplace Install the plugin: claude plugin install customerio-pack@<marketplace-name>, using the marketplace name from the repository's .claude-plugin/marketplace.json. Restart the session if the new skills or commands don't appear straight away.

Can I use Customerio Pack in Claude Cowork?

Open Customize → Plugins and choose Add marketplace. Enter jeremylongshore/tons-of-skills-marketplace (the owner/repo shorthand works for GitHub). Find Customerio Pack in the list, click Install, then connect any connectors it needs from its Connectors tab.

Is Customerio Pack safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.