Retainful MCP by usefulapi for Claude.ai

io.usefulapi/retainful

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

client:Claude.ai transport:streamable-http tools:7

Install Retainful MCP by usefulapi in Claude.ai

Settings → Connectors → Add custom connector

https://retainful.usefulapi.io/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

retainful_list_contacts
retainful_get_contact
retainful_list_lists
retainful_get_list
retainful_upsert_contact
retainful_add_contact_to_list
retainful_track_event

Retainful MCP by usefulapi in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Retainful MCP by usefulapi MCP server