ChatGPT
Custom MCP server
Claude and Claude Desktop take Grounder as a custom connector: name it grounder, paste the address and sign in.
Add the skill so Claude searches with Grounder instead of its built-in search: download grounder-web-search.zip, then upload it under Customize, Skills.
ConnectorsClaude
# Customize, Connectors, + Add,
# Add custom connector
Name grounder
URL https://api.grounder.net/mcp
# Add, then Connect and sign in.
# No key needed.
# So Claude searches with Grounder:
# Customize, Skills, +, Create skill,
# Upload a skill
Skill grounder-web-search.zip