Customer.io MCP by usefulapi

Tools

Token cost is the o200k count of the tools list JSON, including schemas, before any tool is called. Showing 12 of 13.

• customerio_search_customers

  Search/list people by a Customer.io filter (segment or attribute conditions). e.g. filter={"segment":{"id":7}} or {"and":[...]}. App API: POST /v1/customers.

• customerio_get_customer_attributes

  Get a single person's attributes (profile fields). App API: GET /v1/customers/{customer_id}/attributes.

• customerio_get_customer_segments

  List the segments a single person belongs to. App API: GET /v1/customers/{customer_id}/segments.

• customerio_get_customer_messages

  List messages (deliveries) sent to a single person. App API: GET /v1/customers/{customer_id}/messages.

• customerio_list_segments

  List all segments in the workspace (id + name + type). App API: GET /v1/segments.

• customerio_list_campaigns

  List all campaigns in the workspace. App API: GET /v1/campaigns.

• customerio_get_campaign

  Get a single campaign by id. App API: GET /v1/campaigns/{campaign_id}.

• customerio_get_campaign_metrics

  Get delivery/engagement metrics for a campaign over time. App API: GET /v1/campaigns/{campaign_id}/metrics.

• customerio_list_messages

  List sent messages (deliveries) across the workspace, filterable by type/campaign/newsletter. App API: GET /v1/messages.

• customerio_list_exports

  List data exports in the workspace. App API: GET /v1/exports.

• customerio_list_collections

  List reusable data collections in the workspace. App API: GET /v1/collections.

• customerio_send_transactional_email

  ⚠️ SENDS A REAL EMAIL. Send a transactional email using a transactional message template. Delivers immediately to the `to` recipient. App API: POST /v1/send/email.