What is the key difference between Vault Knowledge and Lucairn Sdks?

Vault Knowledge 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 Vault Knowledge 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 Vault Knowledge and Lucairn Sdks free or paid?

Vault Knowledge 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?

Vault Knowledge lists 3 tools with 3 views and 0 GitHub stars. Lucairn Sdks lists 6 tools with 5 views and 2 GitHub stars.

Can I use both Vault Knowledge 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.

Side-by-Side Model Context Protocol Comparison

Vault Knowledge vs Lucairn Sdks

In-depth architectural comparison of the Vault Knowledge 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

Vault Knowledge

Security · Local stdio

Quality: 57/100 (Good) | Auth: No auth required

Lucairn Sdks

Security · Local stdio

Quality: 57/100 (Good) | Auth: API Key required

Verdict Summary: Choose Vault Knowledge 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 Vault Knowledge 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).
You have access to required keys: VAULT_DB, VAULT_ROOT.
Primary tools included: search_concepts, find_contradictions, get_article.

Explore Vault Knowledge 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: PII detection and placeholder substitution, Anthropic and OpenAI model routing, Ed25519-signed response certificates.

Feature & Specification Comparison

Specification	Vault Knowledge Security	Lucairn Sdks Declade Security
Summary	Read-only MCP over a vault's typed knowledge graph: concept search, contradictions, article fetch.	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

Tools & Capabilities Breakdown

Vault Knowledge Tools (3)

search_concepts

Semantically search the vault's concept, connection, and Q&A articles for a natural-language query. Returns ranked {slug, title, similarity_score, excerpt, last_modified}. Read-only.

find_contradictions

Traverse the typed reasoning graph for active 'contradicts' edges — the sharpest of six relation types. scope='all' or 'recent_30d'. Returns {from_slug, to_slug, confidence, surfaced_at, source_run_id}. Read-only.

get_article

Fetch one article by slug with frontmatter, body, and resolved inbound/outbound wikilinks. Reads only files under the configured knowledge allowlist. Read-only.

Lucairn Sdks Tools (6)

PII detection and placeholder substitution

Anthropic and OpenAI model routing

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).

Vault Knowledge Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "vault-knowledge": {
      "command": "npx",
      "args": [
        "-y",
        "@swins/vault-knowledge-mcp"
      ],
      "env": {
        "VAULT_DB": "YOUR_VAULT_DB_HERE",
        "VAULT_ROOT": "YOUR_VAULT_ROOT_HERE"
      }
    }
  }
}

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

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

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