| name | Customer.io Automation |
| description | Automate customer engagement workflows including broadcast triggers, message analytics, segment management, and newsletter tracking through Customer.io via Composio |
| category | Development & Code Tools |
| source | composio |
| tags | ["api","slack","json","cli","mcp","automation","ai"] |
| url | https://github.com/ComposioHQ/awesome-claude-skills/tree/master/customerio-automation |
Customer.io Automation
Automate customer engagement operations -- trigger targeted broadcasts, retrieve delivery metrics, manage audience segments, list newsletters and transactional templates, and inspect trigger execution history -- all orchestrated through the Composio MCP integration.
Toolkit docs: composio.dev/toolkits/customerio
Setup
- Connect your Customer.io account through the Composio MCP server at
https://rube.app/mcp
- The agent will prompt you with an authentication link if no active connection exists
- Once connected, all
CUSTOMERIO_* tools become available for execution
Core Workflows
1. Trigger a Broadcast
Manually fire a pre-configured broadcast to a specific audience with personalization data.
Tool: CUSTOMERIO_TRIGGER_BROADCAST
| Parameter | Type | Required | Description |
|---|
broadcast_id | integer | Yes | Broadcast ID from Customer.io Triggering Details |
ids | array | No | List of customer IDs to target |
emails | array | No | List of email addresses to target |
recipients | object | No | Complex filter with and/or/not/segment operators |
per_user_data | array | No | Per-user personalization with id/email + data |
data | object | No | Global key-value data for Liquid template personalization |
data_file_url | string | No | URL to JSON file with per-line user data |
email_add_duplicates | boolean | No | Allow duplicate recipients (default: false) |
email_ignore_missing | boolean | No | Skip people without emails (default: false) |
id_ignore_missing | boolean | No | Skip people without customer IDs (default: false) |
Important: Provide exactly ONE audience option: recipients, ids, emails, per_user_data, or data_file_url. Rate limit: 1 request per 10 seconds per broadcast.
2. Retrieve Message Delivery Metrics
Fetch paginated delivery metrics for messages with filtering by campaign, type, and time window.
Tool: CUSTOMERIO_GET_MESSAGES
| Parameter | Type | Required | Description |
|---|
type | string | No | Message type: email, webhook, twilio, slack, push, in_app |
metric | string | No | Metric: attempted, sent, delivered, opened, clicked, converted |
campaign_id | integer | No | Filter by campaign ID |
newsletter_id | integer | No | Filter by newsletter ID |
action_id | integer | No | Filter by action ID |
start_ts | integer | No | Start of time window (Unix timestamp) |
end_ts | integer | No | End of time window (Unix timestamp) |
limit | integer | No | Results per page, 1-1000 (default: 50) |
start | string | No | Pagination token from previous response next value |
drafts | boolean | No | Return draft messages instead of active/sent |
3. List Audience Segments
Retrieve all segments defined in your workspace for audience analysis and broadcast targeting.
Tool: CUSTOMERIO_GET_SEGMENTS
No parameters required -- returns all segments with IDs and metadata.
Use segment IDs when targeting broadcasts via the recipients.segment.id filter.
4. List Newsletters
Paginate through all newsletter metadata for tracking and analysis.
Tool: CUSTOMERIO_LIST_NEWSLETTERS
| Parameter | Type | Required | Description |
|---|
limit | integer | No | Max per page, 1-100 |
sort | string | No | asc (chronological) or desc (reverse) |
start | string | No | Pagination cursor from previous response next value |
5. Discover Transactional Message Templates
List all transactional message templates to find IDs for sending via the API.
Tool: CUSTOMERIO_LIST_TRANSACTIONAL_MESSAGES
No parameters required -- returns template IDs and trigger names.
6. Inspect Broadcast Trigger History
Review all trigger executions for a broadcast and inspect individual trigger details.
Tools: CUSTOMERIO_GET_TRIGGERS and CUSTOMERIO_GET_TRIGGER
List all triggers for a broadcast:
| Parameter | Type | Required | Description |
|---|
broadcast_id | integer | Yes | The broadcast/campaign ID |
Get a specific trigger:
| Parameter | Type | Required | Description |
|---|
broadcast_id | integer | Yes | The campaign/broadcast ID |
trigger_id | string | Yes | Trigger identifier (e.g., 456 or 5-37) |
Known Pitfalls
| Pitfall | Details |
|---|
| Mutually exclusive audience params | CUSTOMERIO_TRIGGER_BROADCAST requires exactly ONE of recipients, ids, emails, per_user_data, or data_file_url -- providing multiple causes errors |
| Rate limiting on broadcasts | Broadcasts are limited to 1 trigger request per 10 seconds per broadcast ID |
| **U | |
