Claude
Custom connector
ChatGPT on the web takes Grounder as a custom MCP server: name it grounder, paste the address, choose OAuth and sign in.
PluginsChatGPT
# chatgpt.com/plugins, +,
# Add custom MCP server
Name grounder
URL https://api.grounder.net/mcp
Auth OAuth
# Create and sign in, then type
# @grounder in a new chat.