Customer.io agent skills for Claude Code, Cursor and RevampKey

3 ready-made playbooks that teach an AI agent how to do real Customer.io work: which tools to call, what to check first, and when to stop and ask you.

Download RevampKey, free I have it: connect Customer.io

Connect Customer.io once and all 3 skills install themselves and stay up to date. Mac, Windows and Linux.

All 3 Customer.io skills

Each skill is one job. You ask in plain words and the agent loads the skill that matches, then follows its steps.

Start hereAsks before writing8 Customer.io tools

Use the Customer.io connector safely

Guides the assistant to confirm the right workspace, read before it writes, and wait for your explicit yes before sending, changing or deleting anything in Customer.io.

Use it when

You have just connected Customer.io and want to know what the assistant can safely do
You want to look something up across one of your Customer.io workspaces
You need a change made in Customer.io and want it confirmed before it goes live

Tools it uses

cio_auth_status
cio_prime
cio_schema
cio_skills_list
cio_skills_read
cio_read_api
cio_write_api
cio_delete_api

Example

Check which Customer.io workspace you're connected to, then tell me how many profiles match 'trial_ended' in the last 30 days, without changing anything.

Connected workspace: Acme Production (confirmed with you). I read the matching count with a 30-day window: 1,284 profiles matched 'trial_ended'. I made no changes. If you want any profiles updated, tell me the exact change and I will ask for your yes before writing.

Use in RevampKeyRead the full skill →

Read-only4 Customer.io tools

Review Customer.io campaign performance with AI

Reviews the recent performance of a named Customer.io campaign or broadcast, separating real results from noise and flagging anomalies such as bounce or unsubscribe spikes. It reads the data only and asks before changing anything.

Use it when

You want to know whether last week's onboarding email actually worked.
A broadcast's open rate dropped and you need to know if it's real or a tracking issue.
You suspect a send went wrong and want a read-only check before deciding what to do.

Tools it uses

cio_prime
cio_auth_status
cio_schema
cio_read_api

Example

How did the spring re-engagement broadcast perform in Customer.io over the last 14 days? Flag anything that looks wrong.

Spring re-engagement broadcast, last 14 days, 2,400 recipients. Delivered 2,352 (98%). Clicks 188 (8% of delivered). Opens are inflated by image proxies, so I'm leaning on clicks. Hard bounces 31 (1.3%), under the 2% warning level. Unsubscribes 19 (0.8%), above the 0.5% threshold, so the offer may not suit everyone on this list. Read: underperforming on unsubscribes, otherwise inconclusive. Nothing has been changed.

Use in RevampKeyRead the full skill →

Read-only5 Customer.io tools

Audit your Customer.io data schema with AI

Checks whether your Customer.io workspace has the fields a question needs, flagging missing, duplicate or mistyped attributes before you build on them. It is read-only and asks before changing anything.

Use it when

Before building a segment that depends on a plan or subscription field
When a campaign personalisation or segment comes back empty
When the team is unsure which of two similar attributes is the reliable one

Tools it uses

cio_auth_status
cio_schema
cio_read_api
cio_skills_list
cio_skills_read

Example

Can I segment customers who upgraded to Pro in the last 30 days? Check whether the fields exist and are reliable.

I checked the workspace schema for three requirements. The plan field is usable, populated on the sampled records. The upgrade timestamp is suspect: it is a string on some records and a number on others, so date comparisons will miss those. Two near-duplicate plan fields exist, and only one is written by the billing sync.

Use in RevampKeyRead the full skill →

Get all 3 without copying a file

RevampKey adds the skills when you connect Customer.io, updates them for you and removes them when you disconnect.

Download RevampKey

How Customer.io skills work

Connect Customer.io
The Customer.io MCP server gives the agent its tools.
Ask in plain words
“How did the spring re-engagement broadcast perform in Customer.io over the last 14 days? Flag anything that looks wrong.” Each SKILL.md says when it applies, so only the one that fits is loaded.
Approve any change
The agent calls the tools in order, checks its work, and shows you any change before it makes it.

How to install Customer.io skills

In RevampKey the skills install themselves when you connect Customer.io. In other tools each skill is one folder with a SKILL.md file, and you also need the Customer.io MCP server connected there.

About 1 minute · nothing to copy

Download RevampKey for Mac, Windows or Linux and sign in.
Open Connectors and connect Customer.io. All 3 skills come with it and stay up to date; they go away when you remove the connector.
Ask in plain language, for example “How did the spring re-engagement broadcast perform in Customer.io over the last 14 days? Flag anything that looks wrong.”
Download RevampKeyConnect Customer.io · 1 click
Get RevampKey to connect Customer.io
RevampKey is a free desktop app for Mac, Windows and Linux. Install it, sign in, and Customer.io is one click away with its skills already attached.
Download RevampKey
Not now? Use the skills in your current tool
for s in essentials campaign-performance-review data-schema-audit; do curl -fsSL --create-dirs -o .claude/skills/customer-io-$s/SKILL.md https://revampkey.com/marketplace/customer-io/skills/$s/SKILL.md done
Other tools

Into this project’s .claude/skills folder

Connect the Customer.io MCP server in Claude Code.

Run this in your project folder to add all 3 skills:

for s in essentials campaign-performance-review data-schema-audit; do
  curl -fsSL --create-dirs -o .claude/skills/customer-io-$s/SKILL.md https://revampkey.com/marketplace/customer-io/skills/$s/SKILL.md
done

Ask in plain language, for example “How did the spring re-engagement broadcast perform in Customer.io over the last 14 days? Flag anything that looks wrong.”

Into the shared .agents/skills folder

Connect the Customer.io MCP server in Cursor.

Run this in your project folder to add all 3 skills:

for s in essentials campaign-performance-review data-schema-audit; do
  curl -fsSL --create-dirs -o .agents/skills/customer-io-$s/SKILL.md https://revampkey.com/marketplace/customer-io/skills/$s/SKILL.md
done

Ask in plain language, for example “How did the spring re-engagement broadcast perform in Customer.io over the last 14 days? Flag anything that looks wrong.”

Into the shared .agents/skills folder

Connect the Customer.io MCP server in Codex.

Run this in your project folder to add all 3 skills:

for s in essentials campaign-performance-review data-schema-audit; do
  curl -fsSL --create-dirs -o .agents/skills/customer-io-$s/SKILL.md https://revampkey.com/marketplace/customer-io/skills/$s/SKILL.md
done

Ask in plain language, for example “How did the spring re-engagement broadcast perform in Customer.io over the last 14 days? Flag anything that looks wrong.”

Into the shared .agents/skills folder

Connect the Customer.io MCP server in VS Code.

Run this in your project folder to add all 3 skills:

for s in essentials campaign-performance-review data-schema-audit; do
  curl -fsSL --create-dirs -o .agents/skills/customer-io-$s/SKILL.md https://revampkey.com/marketplace/customer-io/skills/$s/SKILL.md
done

Ask in plain language, for example “How did the spring re-engagement broadcast perform in Customer.io over the last 14 days? Flag anything that looks wrong.”

RevampKey or copy the files?

In RevampKey

One click when you connect Customer.io
Updated for you when a skill improves
Removed when you disconnect
The MCP server is set up for you
800+ other connectors, same way

Download free

Copy into your project

One command per project
Run it again to get updates
You connect the Customer.io MCP server yourself
Works in Claude Code, Cursor, Codex and VS Code

See the command

Customer.io skills FAQ

What is a Customer.io agent skill?

A SKILL.md file: a short playbook an AI agent loads when your request matches it. Each Customer.io skill describes one job, which Customer.io tools to use in which order, what to check first and when to stop and ask you.

Do the Customer.io skills change anything on their own?

2 of the 3 only read. The others tell the agent to show you the change and wait for a yes before it creates, edits or deletes anything in Customer.io.

Which tools can use these skills?

Any agent that reads the open Agent Skills format: Claude Code, Cursor, Codex, VS Code with Copilot and RevampKey. In RevampKey they are attached when you connect Customer.io; elsewhere you copy the folders into your project or skills directory.

Do I need the Customer.io MCP server too?

Yes. The skills tell the agent how to do the work; the Customer.io MCP server gives it the tools to do it. The Customer.io MCP setup guide covers every client.

Customer.io MCP server setup · This page as Markdown

Put Customer.io’s best workflows in your agent

Download RevampKey, connect Customer.io and ask your first question in about a minute.

Download RevampKey Connect Customer.io · 1 click

All 3 Customer.io skills

Use the Customer.io connector safely

Use it when

Tools it uses

Review Customer.io campaign performance with AI

Use it when

Tools it uses

Audit your Customer.io data schema with AI

Use it when

Tools it uses

Get all 3 without copying a file

How Customer.io skills work

How to install Customer.io skills

RevampKey or copy the files?

In RevampKey

Copy into your project

Customer.io skills FAQ

Put Customer.io’s best workflows in your agent

Skills for related tools