io.github.Declade/lucairn-mcp-server

io.github.Declade/lucairn-mcp-serverv1.2.9AI & LLMs

Pseudonymizes PII before your LLM and returns a cryptographically signed receipt per response.

In-path gate · all MCP tools

Using io.github.Declade/lucairn-mcp-server in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire

Auditable install path →Watch it hold a drift →

Trust verdict · v1 advisory · method

REVIEWstatus: PARTIALfresh until 2026-08-14 00:54 UTC

screened 2026-07-03tier: scannedgranularity: description-levelsource: registry

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidence“Declared data handling, no hidden actions”via static_description

Limits of this verdict

- Semantic screen only - the deterministic conformance probe has not run on this server
- Confidence is reported but not yet calibrated (v1)
- Screen reads the tool description, not the live behavior
- advisory
- registry description only no input schema
- screen model 8b
- Still current: the description we screened is unchanged, re-checked against the registry
- The registry listing (version, packages, links) changed after this screen ran - the description we assessed did not

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-08-07).

Contracts can change after screening, with no version bump. The gate pins io.github.Declade/lucairn-mcp-server’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

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A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.

Markdown

[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-declade-lucairn-mcp-server)](https://mcpindex.ai/server/io-github-declade-lucairn-mcp-server)

HTML

<a href="https://mcpindex.ai/server/io-github-declade-lucairn-mcp-server"><img src="https://mcpindex.ai/api/v1/badge/io-github-declade-lucairn-mcp-server" alt="mcpindex verdict" height="20" /></a>

Environment variables

LUCAIRN_API_KEY

requiredsecret

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_KEY

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_KEY

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_URL

Override the gateway URL. Defaults to https://gateway.lucairn.eu (production). Set this to point at a self-hosted Lucairn deployment.

LUCAIRN_TRANSPORT

Transport mode for the MCP server. One of 'direct-http' (default; v1.1+ behavior) or 'stdio-bridge' (v1.2+ opt-in).

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

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GPT55 Model Gateway

xyz.558686.gpt55/token-gateway

Remote MCP gateway for GPT-5.6 Luna, Soul, Terra, and x402-paid agent tools with no API key.

hubmesh

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Deterministic multi-hop graph retrieval for RAG. Zero LLM calls in the query path.

Install this server

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "lucairn-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "@lucairn/mcp-server"
      ],
      "env": {
        "LUCAIRN_API_KEY": "<your-lucairn_api_key>",
        "ANTHROPIC_API_KEY": "<your-anthropic_api_key>",
        "OPENAI_API_KEY": "<your-openai_api_key>",
        "LUCAIRN_BASE_URL": "<lucairn_base_url>",
        "LUCAIRN_TRANSPORT": "<lucairn_transport>"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "lucairn-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "@lucairn/mcp-server"
      ],
      "env": {
        "LUCAIRN_API_KEY": "<your-lucairn_api_key>",
        "ANTHROPIC_API_KEY": "<your-anthropic_api_key>",
        "OPENAI_API_KEY": "<your-openai_api_key>",
        "LUCAIRN_BASE_URL": "<lucairn_base_url>",
        "LUCAIRN_TRANSPORT": "<lucairn_transport>"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y -- @lucairn/mcp-server

Claude Code (claude mcp add)

claude mcp add --scope user lucairn-mcp-server -- npx -y -- @lucairn/mcp-server

Gemini CLI (gemini mcp add)

gemini mcp add -s user lucairn-mcp-server npx -y -- @lucairn/mcp-server

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-declade-lucairn-mcp-server

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v1.2.9
category: AI & LLMs
verdict expires: 2026-08-14
quality: 90 / 100
operator: Declade

Listing

Listed from the official MCP registry. Unclaimed by its maintainer. Maintainer? Email us →

Provenance

Each verdict is bound to a hash of the exact description it judged, so a re-crawl that changes the text produces a new record rather than silently inheriting this one. Verdict history is hash-chained and anchored to Bitcoin via OpenTimestamps (latest confirmed at block 961,250). Verify it yourself.

Links

Repository →