Pseudonymizes PII before your LLM and returns a cryptographically signed receipt per response.
Connect Runs on your machine
claude mcp add lucairn-mcp-server -e LUCAIRN_API_KEY=<LUCAIRN_API_KEY> -e ANTHROPIC_API_KEY=<ANTHROPIC_API_KEY> -e OPENAI_API_KEY=<OPENAI_API_KEY> -e LUCAIRN_BASE_URL=<LUCAIRN_BASE_URL> -e LUCAIRN_TRANSPORT=<LUCAIRN_TRANSPORT> -- npx -y @lucairn/[email protected]{
"mcpServers": {
"lucairn-mcp-server": {
"command": "npx",
"args": [
"-y",
"@lucairn/[email protected]"
],
"env": {
"LUCAIRN_API_KEY": "<LUCAIRN_API_KEY>",
"ANTHROPIC_API_KEY": "<ANTHROPIC_API_KEY>",
"OPENAI_API_KEY": "<OPENAI_API_KEY>",
"LUCAIRN_BASE_URL": "<LUCAIRN_BASE_URL>",
"LUCAIRN_TRANSPORT": "<LUCAIRN_TRANSPORT>"
}
}
}
}{
"mcpServers": {
"lucairn-mcp-server": {
"command": "npx",
"args": [
"-y",
"@lucairn/[email protected]"
],
"env": {
"LUCAIRN_API_KEY": "<LUCAIRN_API_KEY>",
"ANTHROPIC_API_KEY": "<ANTHROPIC_API_KEY>",
"OPENAI_API_KEY": "<OPENAI_API_KEY>",
"LUCAIRN_BASE_URL": "<LUCAIRN_BASE_URL>",
"LUCAIRN_TRANSPORT": "<LUCAIRN_TRANSPORT>"
}
}
}
}{
"servers": {
"lucairn-mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@lucairn/[email protected]"
],
"env": {
"LUCAIRN_API_KEY": "<LUCAIRN_API_KEY>",
"ANTHROPIC_API_KEY": "<ANTHROPIC_API_KEY>",
"OPENAI_API_KEY": "<OPENAI_API_KEY>",
"LUCAIRN_BASE_URL": "<LUCAIRN_BASE_URL>",
"LUCAIRN_TRANSPORT": "<LUCAIRN_TRANSPORT>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
LUCAIRN_API_KEYRequired, secret | Lucairn gateway API key (lcr_live_*). Issued at https://lucairn.eu/account/keys. Free tier requires BYOK upstream LLM keys (ANTHROPIC_API_KEY or OPENAI_API_KEY). |
ANTHROPIC_API_KEYOptional, secret | Upstream Anthropic API key. Used when the requested model is claude-* / anthropic-*. Required if you call Claude models on the free tier (BYOK). |
OPENAI_API_KEYOptional, secret | Upstream OpenAI API key. Used when the requested model routes to OpenAI. Required if you call OpenAI models on the free tier (BYOK). |
LUCAIRN_BASE_URLOptional | Override the gateway URL. Defaults to https://gateway.lucairn.eu (production). Set this to point at a self-hosted Lucairn deployment. |
LUCAIRN_TRANSPORTOptional | Transport mode for the MCP server. One of 'direct-http' (default; v1.1+ behavior) or 'stdio-bridge' (v1.2+ opt-in). |
Details
| Package | @lucairn/[email protected] (NPM, stdio) |
| First published | 31 Jul 2026 |
| Last updated | 31 Jul 2026 |
| Registry name | io.github.Declade/lucairn-mcp-server |
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