AI agents call list-accounts to retrieve information from Ms 365 without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays existing account configuration data without creating, modifying, deleting, or executing any operations. It has minimal blast radius as it only exposes metadata about configured accounts. The low severity reflects that the information returned is limited to account discovery without access to account data itself.
From the tool's definition Tool name 'list-accounts' and description 'List all Microsoft accounts configured in this server' indicates a query operation that retrieves account information without modification or execution. The verb 'list' and 'discover' confirm read-only functionality.
Attacks that exploit this kind of access
List all Microsoft accounts configured in this server. Use this to discover available account emails before making tool calls. Reflects accounts added mid-session via --login. It is categorised as a Read tool in the Ms 365 MCP Server, which means it retrieves data without modifying state.
Register the Ms 365 MCP server in PolicyLayer and add a rule for list-accounts: 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 Ms 365. Nothing to install.
list-accounts 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 list-accounts 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 list-accounts. 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.
list-accounts is provided by the Ms 365 MCP server (@softeria/ms-365-mcp-server). 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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