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Portal accounts: sign in with your ArcGIS or USGS account, and historical aerial photos

Connect your organization’s ArcGIS account to read map layers that need a login, and your USGS EarthExplorer account to pull historical aerial photos of a property by API or AI assistant.

1.35.0

What changed

  • ArcGIS accounts. In Settings → Third-Party Services, a map service marked ArcGIS account · no browser takes your ArcGIS username and password. Relm signs in directly for a short-lived token, so layers that need a login are back in the Relm Data library. A source that needs a login shows Needs ArcGIS login until one is connected. Single-sign-on accounts cannot be used.
  • USGS EarthExplorer. Connect your organization's own USGS account with your USGS username and an M2M application token. The form links to the pages where you request M2M access and create the token.
  • Historical aerial photos. With USGS connected, the API and the MCP server can list historical aerial photos of an address.
  • Your records stay yours. Records read with your organization's account stay inside your organization.

See Query Relm Data by API or MCP and the API reference.

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