customerio_list_messages — Customer.io MCP by usefulapi MCP Tool
customerio_list_messages
(customerio list messages) is one of 13 tools on the
Customer.io MCP by usefulapi
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call customerio_list_messages from your client
- Claude Code Customer.io MCP by usefulapi customerio_list_messages run in your project directory
- Claude Desktop Customer.io MCP by usefulapi customerio_list_messages ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Customer.io MCP by usefulapi customerio_list_messages ~/.cursor/mcp.json
- VS Code Customer.io MCP by usefulapi customerio_list_messages .vscode/mcp.json
- Zed Customer.io MCP by usefulapi customerio_list_messages ~/.config/zed/settings.json
- Windsurf Customer.io MCP by usefulapi customerio_list_messages ~/.codeium/windsurf/mcp_config.json
- Cline Customer.io MCP by usefulapi customerio_list_messages ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Customer.io MCP by usefulapi customerio_list_messages ~/.gemini/settings.json
- Grok Customer.io MCP by usefulapi customerio_list_messages .mcp.json (in your project root)
- ChatGPT Customer.io MCP by usefulapi customerio_list_messages Settings → Connectors → Advanced → Developer mode
- Claude.ai Customer.io MCP by usefulapi customerio_list_messages Settings → Connectors → Add custom connector
- LangChain Customer.io MCP by usefulapi customerio_list_messages pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http customerio https://customerio.usefulapi.io/mcpOther tools on this server
- customerio_search_customers
- customerio_get_customer_attributes
- customerio_get_customer_segments
- customerio_get_customer_messages
- customerio_list_segments
- customerio_list_campaigns
- customerio_get_campaign
- customerio_get_campaign_metrics
- customerio_list_exports
- customerio_list_collections
- customerio_send_transactional_email
- customerio_trigger_broadcast
This list was read from the server itself, by connecting to it and calling tools/list on 14 November 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.