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Lucairn Privacy Gateway MCP Server

@Declade

Repository

Basic information

Category

AI & Agents

Transports

stdio

Auth

oauth

Author

Declade

Submitted by

dsaTheVeil

About Lucairn Privacy Gateway MCP Server

Lucairn is an EU-based privacy gateway that sits between your MCP-enabled agent and the upstream LLM (Claude, GPT-4o, o1/o3/o4).

#privacy#security#gateway#gdpr#compliance#byok#anthropic#openai#llm#eu#streamable-http#mcp-http

Lucairn Privacy Gateway MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "lucairn": {
      "url": "https://gateway.lucairn.eu/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_LUCAIRN_API_KEY>"
      }
    }
  }
}

Lucairn Privacy Gateway MCP Server tools

1

Send a chat request through the Lucairn privacy gateway with cross-provider BYOK (Anthropic + OpenAI). PII is detected and replaced with placeholders before reaching the upstream LLM. The gateway picks the upstream provider based on the `model` parameter: `claude-*` / `anthropic-*` use ANTHROPIC_API_KEY; `gpt-*` / `openai-*` / `o1-*` / `o3-*` / `o4-*` use OPENAI_API_KEY. Wire format follows the Anthropic Messages API. Developer-tier responses contain raw placeholders; Pro and Enterprise tiers can enable automatic re-linking back to the original values.

Overview

What is Lucairn Privacy Gateway?

Lucairn Privacy Gateway is an EU-based privacy gateway for AI agents. It sits between an MCP-enabled client and upstream OpenAI or Anthropic models, pseudonymizes personally identifiable information (PII) before the model sees it, and returns a signed verification receipt for each request.

How to use Lucairn Privacy Gateway?

Run npx -y @lucairn/mcp-server to start the server. Configure your MCP client (e.g., claude_desktop_config.json) with the command and environment variables LUCAIRN_API_KEY, ANTHROPIC_API_KEY, and/or OPENAI_API_KEY. The server exposes one tool, chat_via_lucairn, which you call with a messages-style payload.

Key features of Lucairn Privacy Gateway

  • EU-based privacy gateway for AI agents
  • Pseudonymizes PII before the upstream model
  • Returns a signed verification receipt per request
  • Free Developer tier: 500 requests per month
  • Bring your own provider key (BYOK) for OpenAI or Anthropic
  • Routes models automatically based on prefix and keys

Use cases of Lucairn Privacy Gateway

  • AI agents that must keep user personal data private from model providers
  • Customer support assistants that need to anonymize names, emails, and IDs
  • Data processing pipelines that require a verifiable privacy layer

Frequently asked questions

1

How do I get an API key?

Create a free Developer account at https://lucairn.eu/account/signup.

2

What models are supported?

The gateway supports any OpenAI or Anthropic model available to your provider account. Model prefixes `claude-*`/`anthropic-*` route to Anthropic; `gpt-*`/`openai-*`/`o1-*`/`o3-*`/`o4-*` route to OpenAI.

3

What happens to detected PII?

PII is replaced with placeholders like `[PERSON_1]` before the request reaches the model. On the Developer tier, placeholders remain visible in responses; Pro and Enterprise tiers support relinking.

4

Is the Developer tier free?

Yes, the Developer tier includes 500 requests per month and does not require a credit card. You must provide your own OpenAI or Anthropic API key.

5

Where can I verify a receipt?

Use the verification tool at https://lucairn.eu/verify to check the signed receipt returned with each response.

Comments

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