The RMSP documentation page you requested requires a login.
AI agents and assistants can reach the same documentation through the RMS MCP server.

RMS MCP: RMS MCP (Resource Modeling Solutions MCP) provides version-aware RMSP documentation search, API inspection, and example discovery, and read-only access to your RMS portal account information.
  Endpoint: https://portal.resourcemodelingsolutions.com/api/mcp/rmsp/v1
  Access: Documentation and software access are required to use RMS MCP.
  Set up: add it to your MCP client as a remote (Streamable HTTP) server named "rms-mcp".

Clients discover the OAuth sign-in automatically: the user signs in with their Atlas account when the client first connects.
More: https://resourcemodelingsolutions.com/llms.txt