select-account
Select a Microsoft account as the default. Accepts email address (e.g. user@outlook.com) or account ID. Use list-accounts to discover available accounts.
This record as markdown: /tools/jo3zik-ms-365-mcp-server/select-account.md
What select-account does on Ms 365
AI agents use select-account to create or update resources in Ms 365, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ms 365 environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
account | string | Yes | Email address or account ID of the account to select |
Parameters from the server's own tool schema.
Why select-account is rated Medium
This tool performs a state-changing operation that affects subsequent tool behavior by designating which Microsoft account context will be used for future operations. This is a Write operation because it modifies configuration state reversibly.
From the tool's definition The tool 'select-account' modifies state by setting a default account selection. While it does not create or delete accounts, it changes the application's configured state (which account is active/default), which is a reversible data modification.
Attacks that exploit this kind of access
The rule that runs select-account safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Ms 365, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For select-account, this is the rule to start with:
select-account stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Ms 365, apply this rule, and every select-account call is checked against it from then on.
Questions about select-account
Select a Microsoft account as the default. Accepts email address (e.g. user@outlook.com) or account ID. Use list-accounts to discover available accounts. It is categorised as a Write tool in the Ms 365 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
select-account accepts 1 parameter: account. Required: account. The full parameter table on this page comes from the server's own tool schema.
Register the Ms 365 MCP server in PolicyLayer and add a rule for select-account: 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.
select-account is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the select-account 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 select-account. 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.
select-account is provided by the Ms 365 MCP server (@jo3zik/ms-365-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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