explain_fact — HEY Research Lab MCP Tool
explain_fact
(explain fact) is one of 13 tools on the
HEY Research Lab
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call explain_fact from your client
- Claude Code HEY Research Lab explain_fact run in your project directory
- Claude Desktop HEY Research Lab explain_fact ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor HEY Research Lab explain_fact ~/.cursor/mcp.json
- VS Code HEY Research Lab explain_fact .vscode/mcp.json
- Zed HEY Research Lab explain_fact ~/.config/zed/settings.json
- Windsurf HEY Research Lab explain_fact ~/.codeium/windsurf/mcp_config.json
- Cline HEY Research Lab explain_fact ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI HEY Research Lab explain_fact ~/.gemini/settings.json
- Grok HEY Research Lab explain_fact .mcp.json (in your project root)
- ChatGPT HEY Research Lab explain_fact Settings → Connectors → Advanced → Developer mode
- Claude.ai HEY Research Lab explain_fact Settings → Connectors → Add custom connector
- LangChain HEY Research Lab explain_fact pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http hey-research https://heyresearch.xyz/mcpOther tools on this server
This list was read from the server itself, by connecting to it and calling tools/list on 5 October 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.