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mcp/harbor
Verified official

customerio MCP

v1.0.1

io.usefulapi/customerio

Query people, segments, campaigns, and message deliveries; send transactional email or broadcasts.

transport:streamable-http
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Target client

run in your project directory 

claude mcp add --transport http customerio https://customerio.usefulapi.io/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.