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SEA-LION MCP Server

SEA-LION Model Context Protocol (MCP) Server provides a simple way to access SEA-LION’s multilingual models and Southeast Asian language tools from MCP-compatible clients.

The Model Context Protocol (MCP) is an open standard for connecting AI models to external tools, data sources, and services. It defines a common interface so that clients (such as IDEs, chat assistants, or AI agents) can discover and use capabilities provided by servers without custom integrations for each tool. Powered by the SEA-LION API, the MCP server exposes capabilities including translation and localisation, and safety classification.

Usage of the SEA-LION API is subject to our Terms of Use and Privacy Policy

Connect via Claude Desktop

Claude Desktop handles the OAuth flow for you automatically. It's the most straightforward way to connect.

  1. Open Claude Desktop and go to Settings → Connectors → Customize

  2. Click Add Custom Connector and select Web

  3. Enter a name (e.g. SEA-LION MCP) and the URL: https://mcp.sea-lion.ai

  4. Click Add and Connect

Claude Desktop Add custom connector dialog with the SEA-LION MCP name and URL filled in

  1. Click on Allow Access and sign in with your Google account

SEA-LION Application Access Request screen with the Allow Access button

Connect via Claude Code CLI

To add the MCP server to Claude Code CLI:

You'll then be prompted to sign in: your browser opens, and you authorise access with your Google account.

Verify the connection with:

You should see sealion listed as ✓ Connected.

Using Claude

Once integrated, SEA-LION MCP works invisibly in the background. Users can simply talk to the main LLM such as Claude naturally.

Example Prompt:

Can you translate this article into Malay for our Singapore audience?

Translation prompt with Claude requesting permission to use the SEA-LION Translate localize tool
The article translated into Malay and localized for a Singaporean audience

Claude automatically calls SEA-LION's translation engine, localising the content for the right tone and context.

Beyond translation, SEA-LION can also detect Southeast Asian language variants and moderate content with cultural context specific to the region.

Rate Limits

Limits help us mitigate misuse and manage API capacity and help ensure that everyone has fair access to the API.

SEA-LION MCP usage frequency will be subject to rate limits applied on requests per minute (RPM).

As of 04 Jun 2026, our rate limits is set to 10 requests per minute per user.

If you have any questions or want to speak about getting a rate limit increase, reach out to sealion@aisingapore.org.

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