Use this tool to retrieve all assignments for a specific Gradescope course, including the student
AI agents call get_gradescope_assignments to retrieve information from Canvas MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a data retrieval operation with no side effects—it queries and returns assignment data from Gradescope. It does not create, modify, delete, or execute operations. The blast radius of misuse is minimal; exposure of assignment information carries low risk compared to tools that could modify grades, delete records, or trigger financial transactions.
From the tool's definition Tool retrieves assignments for a Gradescope course; uses verb 'retrieve' and returns data without modification. Description indicates a query operation that fetches existing assignment information.
Attacks that exploit this kind of access
Use this tool to retrieve all assignments for a specific Gradescope course, including the student. It is categorised as a Read tool in the Canvas MCP MCP Server, which means it retrieves data without modifying state.
Register the Canvas MCP server in PolicyLayer and add a rule for get_gradescope_assignments: 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 Canvas MCP. Nothing to install.
get_gradescope_assignments 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 get_gradescope_assignments 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 get_gradescope_assignments. 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.
get_gradescope_assignments is provided by the Canvas MCP server (noahjohannessen/canvas-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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