list-supported-languages

SERVERMs 365 SOURCE@jo3zik/ms-365-mcp-server

Low RISK CLASS

Category Read

Parameters 80 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/jo3zik-ms-365-mcp-server/list-supported-languages.md

WHAT IT DOES

What list-supported-languages does on Ms 365

AI agents call list-supported-languages to retrieve information from Ms 365 without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`top`	number	—	Page size (Graph $top). Start small (e.g. 5–15) so responses fit the model context; raise only if needed. Use $select to return fewer fields per item. For more
`skip`	number	—	Items to skip for pagination. Not supported with $search.
`count`	boolean	—	Set true to enable advanced query mode (ConsistencyLevel: eventual). Required for complex $filter on flag/flagStatus or contains().
`filter`	string	—	OData filter expression. Add $count=true for advanced filters (flag/flagStatus, contains()). Cannot combine with $search.
`search`	string	—	KQL search query — wrap value in double quotes. Cannot combine with $filter.
`fetchAllPages`	boolean	—	Follow @odata.nextLink and merge up to 100 pages into one response. Can return enormous payloads—only when the user explicitly needs a full export. Prefer a sma
`includeHeaders`	boolean	—	Include response headers (including ETag) in the response metadata
`excludeResponse`	boolean	—	Exclude the full response body and only return success or failure indication

Parameters from the server's own tool schema.

RISK

Why list-supported-languages is rated Low

Even though list-supported-languages only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list-supported-languages 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 list-supported-languages, this is the rule to start with:

list-supported-languages Allowed

list-supported-languages is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list-supported-languages": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Ms 365, apply this rule, and every list-supported-languages call is checked against it from then on.

FAQ

Questions about list-supported-languages

What does the list-supported-languages tool do? +

Get the list of locales and languages that are supported for the user, as configured on the user's mailbox server. When setting up an Outlook client, the user selects the preferred language from this supported list. You can subsequently get the preferred language by getting the user's mailbox settings. 💡 TIP: Lists locales and languages the user's mailbox server supports for the Outlook UI and message rendering. Returns localeInfo objects with locale (e.g. 'en-US') and displayName ('English (United States)'). Use this to validate the locale value before calling update-mailbox-settings to change the user's preferred language. It is categorised as a Read tool in the Ms 365 MCP Server, which means it retrieves data without modifying state.

What parameters does list-supported-languages accept? +

list-supported-languages accepts 8 parameters: top, skip, count, filter, search, fetchAllPages, includeHeaders, excludeResponse. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on list-supported-languages? +

Register the Ms 365 MCP server in PolicyLayer and add a rule for list-supported-languages: 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.

What risk level is list-supported-languages? +

list-supported-languages is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list-supported-languages? +

Yes. Add a rate_limit block to the list-supported-languages 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.

How do I block list-supported-languages completely? +

Set action: deny in the PolicyLayer policy for list-supported-languages. 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.

What MCP server provides list-supported-languages? +

list-supported-languages 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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