Get Copilot seat assignments for an Organization (user list with last activity date, editor info, plan type)
AI agents call get_copilot_seat_assignments to retrieve information from Copilot Usage without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries organizational seat assignment data without modifying it. The blast radius is medium because exposed user lists with activity metadata and seat assignments could enable social engineering, targeting of specific users, or reconnaissance of organizational structure, but no direct harm occurs from the read operation itself.
From the tool's definition Tool name 'get_copilot_seat_assignments' and description 'Get Copilot seat assignments for an Organization (user list with last activity date, editor info, plan type)' indicate data retrieval only.
Attacks that exploit this kind of access
Get Copilot seat assignments for an Organization (user list with last activity date, editor info, plan type). It is categorised as a Read tool in the Copilot Usage MCP Server, which means it retrieves data without modifying state.
Register the Copilot Usage MCP server in PolicyLayer and add a rule for get_copilot_seat_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 Copilot Usage. Nothing to install.
get_copilot_seat_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_copilot_seat_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_copilot_seat_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_copilot_seat_assignments is provided by the Copilot Usage MCP server (tatsuyamiyazaki/copilot-usage-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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