What
Managed policy is the set of rules an organisation pushes to its users. The apps gateway, the service that hands out this policy, now checks which app is asking. If a Claude Desktop session asks and the policy has no desktopSessionPayload, the gateway answers 404 "not served to Claude Desktop sessions". It also logs why: either serve_to_desktop is not set, or the CLI settings are empty.
Why
Policy meant for the command-line tool is not applied to Claude Desktop by accident. Administrators who want Desktop covered need to include a desktop payload.
Names in the bundledesktopSessionPayloadserve_to_desktop
Documented inclaude-code/claude-apps-gateway-config
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Confirmed since
Anthropic's documentation has since written up serve_to_desktop, on Claude apps gateway configuration.
When you switch, delete any `serve_to_desktop` line in the same edit that renames the blocks. Where an instruction names the `cli` block, use your `code` block.claude-apps-gateway-config see the edit
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up serve_to_desktop, on Claude apps gateway configuration.