What is the key difference between Rail Score and Lucairn Sdks?

Rail Score belongs to the Security category with local stdio execution, while Lucairn Sdks belongs to the Security category with local stdio execution.

How do I install Rail Score or Lucairn Sdks in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Rail Score and Lucairn Sdks free or paid?

Rail Score operates under a Free / Open Source model (No auth required). Lucairn Sdks operates under a Freemium model (API Key required).

Which MCP server has more tools and community activity?

Rail Score lists 9 tools with 0 views and 0 GitHub stars. Lucairn Sdks lists 6 tools with 3 views and 2 GitHub stars.

Can I use both Rail Score and Lucairn Sdks together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

How do I install Rail Score or Lucairn Sdks in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are Rail Score and Lucairn Sdks free to use, or do they require API keys?

Rail Score is listed under a Free / Open Source model with No auth required . Lucairn Sdks operates under a Freemium model with API Key required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both Rail Score and Lucairn Sdks at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both rail-score and declade-lucairn-sdks as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Rail Score has a Quality Score of 49 /100 ( Fair ) with 0 views, 0 installs, and 0 GitHub stars. Lucairn Sdks holds a Quality Score of 60 /100 ( Good ) with 3 views, 0 installs, and 2 GitHub stars.

Side-by-Side Model Context Protocol Comparison

Rail Score vs Lucairn Sdks

In-depth architectural comparison of the Rail Score and Lucairn Sdks MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Rail Score

Security · Local stdio

Quality: 49/100 (Fair) | Auth: No auth required

Lucairn Sdks

Security · Local stdio

Quality: 60/100 (Good) | Auth: API Key required

Verdict Summary: Choose Rail Score if you need specialized Security tools running via a local process. Choose Lucairn Sdks if your workspace requires Security integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Rail Score when:

You need dedicated capabilities in the Security domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: rail_evaluate, rail_check_compliance, rail_detect_injection.

Explore Rail Score Details

Choose Lucairn Sdks when:

You need dedicated capabilities in the Security domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Freemium).
You have access to required keys: LUCAIRN_API_KEY, ANTHROPIC_API_KEY, OPENAI_API_KEY.
Primary tools included: Three-layer PII detection including custom and Presidio recognizers, Redacts PII with placeholders before upstream model access, Signed Ed25519 certificates with RFC 3161 timestamp and Sigstore anchoring.

Feature & Specification Comparison

Specification	R Rail Score Security	Lucairn Sdks Declade Security
Summary	Responsible-AI guardrails for agents: scoring, prompt-injection & PII detection, DPDP compliance.	Privacy-preserving AI gateway. Sanitises PII (German + English; Microsoft Presidio + custom recognisers) before prompts reach Anthropic / OpenAI / your LLM, then emits a signed cryptographic certificate per call (Ed25519 + RFC 3161 timestamp + Sigstore Rekor anchoring). EU GDPR + AI Act ready. Free tier 500 calls/month, BYOK. Install: npx -y @lucairn/mcp-server. Docs: https://lucairn.eu/developer/mcp.
Category & Scope	Security

Tools & Capabilities Breakdown

Rail Score Tools (9)

rail_evaluate

Score content across the 8 RAIL dimensions (optional `policy` enforcement)

rail_check_compliance

Check against gdpr, ccpa, hipaa, eu_ai_act, india_dpdp, india_ai_gov

rail_detect_injection

Detect prompt injection in untrusted text

rail_evaluate_tool_call

Allow/warn/block a tool call before it runs

rail_scan_tool_result

Scan a tool's output for PII + injection, return redacted text

rail_safe_regenerate

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Rail Score Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "rail-score": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/inspector"
      ]
    }
  }
}

Lucairn Sdks Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "declade-lucairn-sdks": {
      "command": "npx",
      "args": [
        "-y",
        "@lucairn/mcp-server"
      ],
      "env": {
        "LUCAIRN_API_KEY": "YOUR_LUCAIRN_API_KEY_HERE",
        "ANTHROPIC_API_KEY": "YOUR_ANTHROPIC_API_KEY_HERE",
        "OPENAI_API_KEY": "YOUR_OPENAI_API_KEY_HERE"
      }
    }
  }
}

Frequently Asked Questions

Rail Score is categorized under Security and uses a local stdio subprocess. In contrast, Lucairn Sdks belongs to Security using local stdio subprocess. Select Rail Score when you need capabilities focused on security and Lucairn Sdks when you require tools for security.

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