Settings and access

A canister’s Settings and access section shows who controls it, who can read it, its resource limits and its environment variables.

1. Choose Edit settings and change what you need.

2. Review the exact changes, and choose who runs them. Removing a controller asks you to type the canister’s name.

3. Confirm. icLens reads the settings back to check every change landed.

What you can change

Section	What it holds
Settings	Compute allocation, Memory allocation, Wasm memory limit, Freezing threshold, Reserved cycles limit, and who can read its logs, snapshots and status.
Controllers	Who can manage the canister.
Allowed viewers	Who can read it without controlling it.
Environment variables	Names and values the canister reads at runtime.

Numbers accept short forms such as 30d, 2gib or 5t.

Give an Agent access

The simplest way is to add the canister to the Agent with Add to…: its review makes the Agent a status viewer (Observe) or a controller (Control) for you. Your canister list.

Here you can also use Add controller and Remove controller, and edit the viewer lists directly.

Good to know

• Anyone who can read the canister’s status can also read its environment variables. Don’t put secrets there if status is public.
• Removing the last controller leaves nobody able to manage the canister.
• Removing yourself can succeed but leave you unable to check the result. Make sure another controller remains.
• If the result says Accepted · not verified, read the settings again before trying another change.