Is an API Key required for LibreTranslate API?

No. LibreTranslate is open-source and many public instances allow free requests. However, some instances or the official site may require an API Key for higher limits.

Can I use a custom self-hosted instance?

Yes. Provide the `LIBRETRANSLATE_URL` in the server configuration to point your agent to your own private instance.

Does it support language detection?

Yes. Use the `detect_language` tool to identify the primary language of any text string along with a confidence metadata score.

LibreTranslate API MCP Server for Google ADK 4 tools — connect in under 2 minutes

Name: LibreTranslate API
Availability: InStock
Author: Vinkius

google.github.io/adk-docs/tools/mcp-tools

Built by Vinkius GDPR 4 Tools SDK

Google Agent Development Kit (ADK) is Google's framework for building production AI agents. Add LibreTranslate API as an MCP tool provider through Vinkius and your ADK agents can call every tool with full schema introspection.

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Vinkius supports streamable HTTP and SSE.

python

from google.adk.agents import Agent
from google.adk.tools.mcp_tool import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import (
    StreamableHTTPConnectionParams,
)

# Your Vinkius token. get it at cloud.vinkius.com
mcp_tools = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
    )
)

agent = Agent(
    model="gemini-2.5-pro",
    name="libretranslate_api_agent",
    instruction=(
        "You help users interact with LibreTranslate API "
        "using 4 available tools."
    ),
    tools=[mcp_tools],
)

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* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About LibreTranslate API MCP Server

Empower your AI agent to orchestrate your entire localization and language auditing workflow with the LibreTranslate API, the specialized source for free and open-source translation data. By connecting LibreTranslate to your agent, you transform complex translation searches into a natural conversation. Your agent can instantly translate text between dozens of languages, audit language detection confidence, and query supported language metadata without you ever touching a translation portal. Whether you are conducting regional content research or managing multilingual documentation, your agent acts as a real-time linguistic consultant, ensuring your data is always expressive and precise.

Google ADK natively supports LibreTranslate API as an MCP tool provider. declare Vinkius Edge URL and the framework handles discovery, validation, and execution automatically. Combine 4 tools with Gemini's long-context reasoning for complex multi-tool workflows, with production-ready session management and evaluation built in.

What you can do

Translation Auditing — Submits high-resolution text for translation and maintain a clear view of semantic distribution across target languages.
Detection Oversight — Audit the primary language of any text string to understand the linguistic reach of your content instantly.
Language Discovery — Browse all supported languages in the global catalog to identify relevant stylistic markers for your localized projects.
Linguistic Intelligence — Retrieve unique language codes and names to assist in deep-dive archival classification.
Operational Monitoring — Check API status to ensure your translation research workflow is always operational.

The LibreTranslate API MCP Server exposes 4 tools through the Vinkius. Connect it to Google ADK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect LibreTranslate API to Google ADK via MCP

Follow these steps to integrate the LibreTranslate API MCP Server with Google ADK.

Install Google ADK

Run pip install google-adk

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Create the agent

Save the code above and integrate into your ADK workflow

Explore tools

The agent will discover 4 tools from LibreTranslate API via MCP

Why Use Google ADK with the LibreTranslate API MCP Server

Google ADK provides unique advantages when paired with LibreTranslate API through the Model Context Protocol.

Google ADK natively supports MCP tool servers. declare a tool provider and the framework handles discovery, validation, and execution

Built on Gemini models, ADK provides long-context reasoning ideal for complex multi-tool workflows with LibreTranslate API

Production-ready features like session management, evaluation, and deployment come built-in. not bolted on

Seamless integration with Google Cloud services means you can combine LibreTranslate API tools with BigQuery, Vertex AI, and Cloud Functions

LibreTranslate API + Google ADK Use Cases

Practical scenarios where Google ADK combined with the LibreTranslate API MCP Server delivers measurable value.

Enterprise data agents: ADK agents query LibreTranslate API and cross-reference results with internal databases for comprehensive analysis

Multi-modal workflows: combine LibreTranslate API tool responses with Gemini's vision and language capabilities in a single agent

Automated compliance checks: schedule ADK agents to query LibreTranslate API regularly and flag policy violations or configuration drift

Internal tool platforms: build self-service agent platforms where teams connect their own MCP servers including LibreTranslate API

LibreTranslate API MCP Tools for Google ADK (4)

These 4 tools become available when you connect LibreTranslate API to Google ADK via MCP:

check_api_status

Check if the LibreTranslate service is operational

detect_language

Detect the language of a specific text string

list_supported_languages

List all languages supported by the LibreTranslate instance

translate_text

Translate text from one language to another using LibreTranslate

Example Prompts for LibreTranslate API in Google ADK

Ready-to-use prompts you can give your Google ADK agent to start working with LibreTranslate API immediately.

"Translate 'Hello world' from English to Portuguese using LibreTranslate."

"Detect the language of the text 'C'est la vie'."

"List all languages supported by LibreTranslate."

Troubleshooting LibreTranslate API MCP Server with Google ADK

Common issues when connecting LibreTranslate API to Google ADK through the Vinkius, and how to resolve them.

McpToolset not found

Update: pip install --upgrade google-adk

LibreTranslate API + Google ADK FAQ

Common questions about integrating LibreTranslate API MCP Server with Google ADK.

How does Google ADK connect to MCP servers?

Import the MCP toolset class and pass the server URL. ADK discovers and registers all tools automatically, making them available to your agent's tool-use loop.

Can ADK agents use multiple MCP servers?

Yes. Declare multiple MCP tool providers in your agent configuration. ADK merges all tool schemas and the agent can call tools from any server in a single turn.

Which Gemini models work best with MCP tools?

Gemini 2.0 Flash and Pro models both support function calling required for MCP tools. Flash is recommended for latency-sensitive use cases, Pro for complex reasoning.