canvas_list_assignment_groups
List assignment groups for a course
This record as markdown: /tools/cowork-bench/canvas-list-assignment-groups.md
What canvas_list_assignment_groups does on Cowork Bench
AI agents call canvas_list_assignment_groups to retrieve information from Cowork Bench without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why canvas_list_assignment_groups is rated Low
This tool queries and returns data about assignment groups within a course. It performs a read-only operation (list/retrieve) without creating, modifying, deleting, or executing any code. The verb 'list' and the passive nature of the operation (fetching existing data) confirm Read category classification.
From the tool's definition Tool name contains 'list' and description states 'List assignment groups for a course' — a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
The rule that runs canvas_list_assignment_groups safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Cowork Bench, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For canvas_list_assignment_groups, this is the rule to start with:
canvas_list_assignment_groups is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Cowork Bench, apply this rule, and every canvas_list_assignment_groups call is checked against it from then on.
Questions about canvas_list_assignment_groups
List assignment groups for a course. It is categorised as a Read tool in the Cowork Bench MCP Server, which means it retrieves data without modifying state.
Register the Cowork Bench MCP server in PolicyLayer and add a rule for canvas_list_assignment_groups: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Cowork Bench. Nothing to install.
canvas_list_assignment_groups is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the canvas_list_assignment_groups rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for canvas_list_assignment_groups. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
canvas_list_assignment_groups is provided by the Cowork Bench MCP server (0717376/cowork_bench). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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