# get-source-languages

Get list of available source languages

Agent View of the PolicyLayer registry record for `get-source-languages`. HTML page: https://policylayer.com/tools/deepl/get-source-languages

## Facts

- Tool: `get-source-languages`
- Server: DeepL (`@deepl-mcp-server`) — https://policylayer.com/tools/deepl.md
- Install: `npx -y @deepl-mcp-server`
- Homepage: https://www.npmjs.com/package/@deepl-mcp-server
- Risk category: Read (Low risk)
- Registry record: grade C, identity verified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get-source-languages",
    "arguments": {}
  }
}
```

## Why get-source-languages is rated Low

This tool retrieves and returns a static list of available source languages from the DeepL service. It is a pure query operation with no ability to modify, delete, or execute actions. The data returned is informational metadata about service capabilities, making it a low-severity Read operation.

From the tool's own definition: "Tool name 'get-source-languages' and description 'Get list of available source languages' indicate a retrieval operation that returns configuration/metadata about supported languages with no side effects."

## Use case

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

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches DeepL:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get-source-languages": {}
  }
}
```

## Other tools on DeepL (8)

- `translate-document` — Execute — https://policylayer.com/tools/deepl/translate-document.md
- `get-glossary-dictionary-entries` — Read — https://policylayer.com/tools/deepl/get-glossary-dictionary-entries.md
- `get-glossary-info` — Read — https://policylayer.com/tools/deepl/get-glossary-info.md
- `get-target-languages` — Read — https://policylayer.com/tools/deepl/get-target-languages.md
- `get-writing-styles` — Read — https://policylayer.com/tools/deepl/get-writing-styles.md
- `list-glossaries` — Read — https://policylayer.com/tools/deepl/list-glossaries.md
- `translate-text` — Read — https://policylayer.com/tools/deepl/translate-text.md
- `rephrase-text` — Write — https://policylayer.com/tools/deepl/rephrase-text.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=deepl · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/deepl