# Customer.io MCP server

> Read and change Customer.io journeys, segments, people, content and data pipelines from your AI assistant.

- Listing: https://mcp.tc/i/customer-io
- Connect: use the server's own URL `https://mcp.customer.io/mcp` (OAuth sign-in at the server); clients connect to it directly. The listing link is a page, not an MCP endpoint.
- Type: remote (Streamable HTTP)
- Auth: OAuth sign-in
- Category: [Marketing & SEO](https://mcp.tc/c/marketing-seo)
- Vendor: Customer.io
- Homepage: <https://docs.customer.io/ai/mcp/get-started/>
- Docs: <https://docs.customer.io/ai/mcp-server>

## About

Connects a Customer.io account to MCP-compatible AI tools such as Claude, ChatGPT and Cursor. You can read workspace data, create and manage automations and one-time sends, work with segments, and make other changes through natural language prompts.

Runs as a hosted streamable HTTP endpoint at https://mcp.customer.io/mcp for US accounts. EU accounts use https://mcp-eu.customer.io/mcp. Users sign in with OAuth, and an account admin must first enable MCP under Settings \> AI. Requested scopes include read, write, configure, read:sensitive and write:live.

## What it can do

- Read workspace data such as people and segments
- Create and manage automations and journeys
- Create and manage one-time sends
- Work with segments
- Edit message content
- Manage data pipelines

## Example prompts

- "List the segments in my Customer.io workspace."
- "Create a one-time send to my newsletter segment."
- "Show me the journeys that are currently live."
- "Find the person with email jane@example.com and show their attributes."

## Install

### Claude Code

1. Run this in a terminal, in your project folder:

```bash
claude mcp add --transport http customer-io https://mcp.customer.io/mcp
```

2. Start Claude Code, type `/mcp`, pick **customer-io** and choose **Authenticate**. A browser window opens for the Customer.io sign-in.

Add `--scope user` to make it available in every project, not just this one.

### Claude Desktop

1. Open **Settings → Connectors** and click **Add custom connector**.

2. Name it **Customer.io** and paste this URL:

```url
https://mcp.customer.io/mcp
```

3. Click **Add**, then **Connect**, and sign in when Customer.io asks.

Claude Desktop’s JSON config file only starts local servers. Remote servers go through Connectors, and connectors you add on claude.ai show up here too.

### claude.ai

1. Open the connector form on claude.ai. This button fills in the name and URL for you:

[Add to claude.ai](<https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Customer.io&connectorUrl=https%3A%2F%2Fmcp.customer.io%2Fmcp>) (opens connector settings)

2. Check that the URL reads `https://mcp.customer.io/mcp` and click **Add**.

3. Click **Connect** and sign in when Customer.io asks.

Free plans allow one custom connector. On Team and Enterprise plans an owner adds it under **Organization settings → Connectors**.

### ChatGPT

1. On chatgpt.com, open **Settings → Security and login** and turn on **Developer mode**.

2. Go to `chatgpt.com/plugins` and click **+** to create an app for a remote MCP server.

3. Paste `https://mcp.customer.io/mcp` as the server URL and choose **OAuth**. ChatGPT sends you to Customer.io to sign in.

Developer mode is available on the web for Plus, Pro, Business, Enterprise and Education accounts.

### Cursor

[Add to Cursor](<https://cursor.com/install-mcp?name=customer-io&config=eyJ1cmwiOiJodHRwczovL21jcC5jdXN0b21lci5pby9tY3AifQ%3D%3D>) (opens Cursor)

Or add it by hand to `~/.cursor/mcp.json` (all projects) or `.cursor/mcp.json` (this project):

`mcp.json`:

```json
{
  "mcpServers": {
    "customer-io": {
      "url": "https://mcp.customer.io/mcp"
    }
  }
}
```

Cursor shows **Needs login** next to the server. Click it to sign in.

### VS Code

[Install in VS Code](<https://vscode.dev/redirect/mcp/install?name=customer-io&config=%7B%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fmcp.customer.io%2Fmcp%22%7D>) (opens VS Code)

Or from a terminal:

```bash
code --add-mcp '{"name":"customer-io","type":"http","url":"https://mcp.customer.io/mcp"}'
```

Or commit it to the repo in `.vscode/mcp.json`:

`.vscode/mcp.json`:

```json
{
  "servers": {
    "customer-io": {
      "type": "http",
      "url": "https://mcp.customer.io/mcp"
    }
  }
}
```

VS Code asks you to sign in the first time the server starts.

### Devin Desktop

1. Add it to `~/.config/devin/mcp_config.json` (macOS and Linux) or `%APPDATA%\devin\mcp_config.json` (Windows):

`mcp_config.json`:

```json
{
  "mcpServers": {
    "customer-io": {
      "serverUrl": "https://mcp.customer.io/mcp"
    }
  }
}
```

2. Refresh the MCP server list in Cascade and sign in when asked.

Devin Desktop is the new name for Windsurf. It reads `serverUrl` (or `url`) for remote servers.

### Codex

```bash
codex mcp add customer-io --url https://mcp.customer.io/mcp
codex mcp login customer-io
```

Or edit `~/.codex/config.toml` directly:

`config.toml`:

```toml
[mcp_servers.customer-io]
url = "https://mcp.customer.io/mcp"
```

### Gemini CLI

```bash
gemini mcp add --transport http customer-io https://mcp.customer.io/mcp
```

Then, inside Gemini CLI, run `/mcp auth customer-io` to sign in.

This adds it to the current project. Add `-s user` to use it everywhere.

### Any client

Most clients accept this shape. Some name the URL field differently: `serverUrl` in Devin Desktop, `httpUrl` in Gemini CLI’s settings file.

```json
{
  "mcpServers": {
    "customer-io": {
      "type": "http",
      "url": "https://mcp.customer.io/mcp"
    }
  }
}
```

Zed puts servers under `context_servers` in its settings. Cline needs `"type": "streamableHttp"`, or it assumes SSE.

Client only starts local servers? Bridge it with `npx -y mcp-remote https://mcp.customer.io/mcp`.

## Details

- Last checked: 2026-10-03 (reachable, asks for credentials)
- Listed: 2026-10-03
- Updated: 2026-10-03

---
Source: https://mcp.tc/i/customer-io (mcp.tc is an independent directory, not affiliated with this server's publisher). Corrections: https://mcp.tc/report