Server operators need a way to lock down specific model types (e.g. command/shell) so that only admins can create or run them. The existing grant system has no user:* wildcard subject, so there is no way to write a single "deny all non-admins" grant for a model type — you would need a deny grant per user, which is unmanageable.

Solution

PR #2025 adds --restricted-model-types <types> to swamp serve (and swamp serve daemon enable). It accepts a comma-separated list of model types that require admin on access:* to create or run — the same authorization path used for the built-in access model types (swamp/grant, swamp/group, swamp/server-token).

Usage

swamp serve --auth-mode token --admins 'user:admin-id' --restricted-model-types 'command/shell'

Behavior

Non-admin users with run on model:* are denied both [HOST-1] and model.create for restricted types with: Access denied: <principal> does not have 'admin' on access:*
Admin users (those with admin on access:*) can create and run restricted types normally
Model types are normalized on parse, so denormalized variants (Command::Shell, COMMAND.SHELL, command.shell) are all caught
Non-restricted model types are unaffected — non-admin users can still run them per their grants
Multiple types can be restricted: --restricted-model-types 'command/shell,custom/dangerous'

Documentation needed

Add --restricted-model-types to the serve reference documentation
Add an example in the access control / authorization section showing how to lock down command/shell
Update the swamp serve --help examples to include a restricted model types example

02Bog Flow

Shipped

7/31/2026, 5:04:19 PM

Click a lifecycle step above to view its details.

03Sludge Pulse

stack72 assigned stack727/31/2026, 3:53:35 PM

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