Retainful MCP by usefulapi for Claude Code

io.usefulapi/retainful

List contacts and lists; create contacts, add them to lists and record events in Retainful.

client:Claude Code transport:streamable-http tools:7

Install Retainful MCP by usefulapi in Claude Code

run in your project directory

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

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