get_submission
AI agents call get_submission to retrieve information from Canvas LMS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool's name and context within a Canvas LMS server for viewing academic data strongly suggest it retrieves submission information (e.g., grades, feedback, student work) without modifying or deleting anything. No description is provided, which lowers confidence slightly, but the pattern of sibling tools and server purpose clearly indicate read-only functionality.
From the tool's definition Tool name 'get_submission' and sibling tools like 'get_assignment', 'get_rubric', 'get_discussion_entries', 'list_assignments', 'list_announcements' which are all read-only retrieval operations.
Attacks that exploit this kind of access
get_submission. It is categorised as a Read tool in the Canvas LMS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Canvas LMS MCP Server MCP server in PolicyLayer and add a rule for get_submission: 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 LMS MCP Server. Nothing to install.
get_submission 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_submission 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_submission. 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_submission is provided by the Canvas LMS MCP Server MCP server (pranavkarthik10/canvas-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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