MCP server · Customer.io

Customer.io MCP

Customer.io operates a first-party, hosted Model Context Protocol server that exposes the full Journeys App API and the CDP Data Pipelines API to any MCP client. It is a remote HTTP endpoint an agent POSTs to — no local install — authorized with OAuth 2.1 (dynamic client registration, PKCE S256) against the user's own Customer.io login, so a connection can never exceed the permissions of the human who created it.

Open docs → Customer.io provider profile

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Provider: Customer.io Type: Documentation link Transport: Host: docs.customer.io

Documentation

https://docs.customer.io/ai/mcp/get-started.md

Documentation link · transport

Tools

cio_prime — Loads the AI-ready reference for the Customer.io API. The client is expected to call this at the start of a task.
cio_schema — Discovers API endpoints — list resources, find endpoints, and inspect parameters before making calls.
cio_read_api — Makes authenticated GET requests. Listing, reading, and inspecting resources. Supports filtering, pagination, and dry-run previews.
cio_write_api — Makes authenticated POST, PUT, and PATCH requests, for creating and editing resources. Supports dry-run previews.
cio_delete_api — Makes authenticated DELETE requests, for removing resources. Supports dry-run previews.
cio_skills_list — Lists the available agent skills — task-specific instructions for multi-step operations such as creating automations.
cio_skills_read — Reads the full content of a specific skill so the AI tool can follow the step-by-step workflow.
cio_auth_status — Shows the current authentication state, including which workspaces the token can access.

About MCP

The Model Context Protocol (MCP) is an open protocol Anthropic introduced for connecting LLM-based agents to external tools and data sources. Providers publish MCP servers that expose their API surface as structured, discoverable tools — an MCP-compatible client (Claude Desktop, Cursor, Cline, Continue, etc.) can connect to the server and call its tools without any per-provider integration code.

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