Developer docs

Customer.io MCP integration

Work with Customer.io people, campaigns, broadcasts, and workspace…

Updated August 2026

Provider
customerio_mcp
Category
Crm
Setup
See setup section below

Quick start

Call Customer.io MCP from your generated app's worker code via the OverSkill composio client. The toolkit slug below maps to Customer.io MCP's public Composio identifier — your app references it by name and OverSkill handles the OAuth round-trip.

// In your generated app's worker handler:
const composio = composioClient(env);

const result = await composio.execute(
  "CUSTOMERIO_MCP_ACTION_NAME",
  { /* action parameters — see Actions section below */ }
);

return new Response(JSON.stringify(result), {
  headers: { "Content-Type": "application/json" }
});

Replace ACTION_NAME with one of the slugs listed in the Actions section below. The composio client handles auth + rate limits automatically — no API key is exposed to user code.

Setup

Setup details for Customer.io MCP aren't published yet. If you need this integration in production, contact the OverSkill team and we'll prioritize it.

Build with Customer.io MCP

Open OverSkill, describe what you want to build, and reference Customer.io MCP in your prompt — the AI will wire up the integration automatically.