user_123 is, so what it may reach is the application’s set, not a level.
One level, inherited
Every person has an access level, and it is the first of these that is set:- Their own, on the user.
- The most permissive level among the groups their login carries.
- The gateway’s default access.
Inheritance is what keeps this manageable. Set the gateway default to what most
people should have, override on a few groups, and set almost nothing per person —
a per-user level is an exception that will outlive the reason for it, and nothing
reminds you it exists.
Levels are evaluated on every request, so a change lands immediately, including
for sessions already open.
The organization owner is the exception: their level is All, for MCP and
for models, on every gateway, and the panel states it instead of offering the
switch. It moves with ownership.
Grants
A grant makes one server available to the users and groups it names. It targets either a catalog code — every instance of that server, including instances added later — or one specific instance. Prefer the catalog code unless you mean “this account and not the other one”, because the instance-level grant silently fails to cover the second instance somebody adds next month. Each grant shows whether the server is actually usable: ready when the person will connect their own account on first use, configured when a shared credential is already in place, and needs setup when the server is still waiting for an admin credential. A grant on a server that needs setup is not an error; it just does nothing until someone finishes the registry entry. The same grants are visible from the registry side, which is a view of this — not a second place to set it.Models
On a SaaS gateway, the same panels carry a Models block above the MCP one, with the same three levels, set on users, groups and the gateway default, applied to LLM providers:
Models add up rather than taking the first level set. A person reaches what
their own level, their groups and the default give, together, with three
exceptions:
- Their own None means no models at all.
- Without a level of their own, a group at None wins over their other groups and the default.
- A provider on their own level replaces that provider from their groups and the default, so their own selection of it is the one that counts.