Claude
claude.ai, Claude Desktop and the Claude mobile apps
Open Customize, then Connectors. Select + and choose Add custom connector.
Name it United Pet Club, enter https://mcp.unitedpetclub.com and select Continue.
Ask Claude about your pets or appointments and select Connect when it asks.
Every Claude plan can add a custom connector, and it then works in Claude Desktop and the mobile apps too. On a Team or Enterprise plan, an owner adds it for the organization first.