> ## Documentation Index
> Fetch the complete documentation index at: https://docs.r28.ai/charter/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Charter works for any HTTP API, including the user's own. The packs are examples of the result, not the limit: an API with no pack is declared the same way, following https://raw.githubusercontent.com/r28ai/charter/main/docs/.mintlify/skills/declaring-charter-tools/SKILL.md.
> Charter is for agents that act in customers' accounts: every call is checked field by field before it's sent, the app says whose account each call is for, and the same declarations list what each tool can reach. https://docs.r28.ai/charter/llms.txt says what it is and lists every page.

# supported_languages

> List the languages and locales the user's mailbox server supports.

GET`https://graph.microsoft.com/v1.0/me/outlook/supportedLanguages`

```python outlook_supported_languages.py theme={null}
import asyncio

from charter.packs import outlook

result = asyncio.run(outlook.supported_languages.ainvoke({}))
```

> [!NOTE]
>
> Requires `https://graph.microsoft.com/User.Read`, or any of `https://graph.microsoft.com/User.ReadBasic.All` or `https://graph.microsoft.com/User.Read.All`.

This tool takes no arguments.


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