What is the key difference between Kastell and 1Claw Vault?

Kastell belongs to the Security category with local stdio execution, while 1Claw Vault belongs to the Security category with local stdio execution.

How do I install Kastell or 1Claw Vault 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 Kastell and 1Claw Vault free or paid?

Kastell operates under a Free / Open Source model (No auth required). 1Claw Vault operates under a Free / Open Source model (API Key required).

Which MCP server has more tools and community activity?

Kastell lists 6 tools with 4 views and 59 GitHub stars. 1Claw Vault lists 36 tools with 4 views and 2 GitHub stars.

Can I use both Kastell and 1Claw Vault 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

Kastell vs 1Claw Vault

In-depth architectural comparison of the Kastell and 1Claw Vault 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

Kastell

Security · Local stdio

Quality: 63/100 (Good) | Auth: No auth required

1Claw Vault

Security · Local stdio

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

Verdict Summary: Choose Kastell if you need specialized Security tools running via a local process. Choose 1Claw Vault 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 Kastell 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: Server security audits with remediation, SSH hardening and fail2ban setup, UFW firewall management.

Explore Kastell Details

Choose 1Claw Vault when:

You need dedicated capabilities in the Security domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Free / Open Source).
You have access to required keys: ONECLAW_AGENT_API_KEY, ONECLAW_AGENT_TOKEN, ONECLAW_VAULT_ID, ONECLAW_LOCAL_ONLY, ONECLAW_LOCAL_VAULT, ONECLAW_DAEMON_SOCKET, MCP_TRANSPORT, PORT.
Primary tools included: list_secrets, get_secret, put_secret.

Feature & Specification Comparison

Specification	Kastell kastelldev Security	1Claw Vault Security
Summary	Server security auditing and hardening toolkit. 413 security checks across 29 categories (SSH, Firewall, Docker, TLS, HTTP Headers), CIS/PCI-DSS/HIPAA compliance mapping, 19-step production hardening, fleet management, and forensic evidence collection. Supports Hetzner, DigitalOcean, Vultr, and Linode. 13 MCP tools.	HSM-backed vault secrets for AI agents (JIT fetch) plus prompt-injection and threat scanning.
Category & Scope	Security

Tools & Capabilities Breakdown

Kastell Tools (6)

Server security audits with remediation

SSH hardening and fail2ban setup

UFW firewall management

Cloud server provisioning

Backup, restore, and snapshot workflows

MCP access for AI agents

1Claw Vault Tools (36)

list_secrets

List all secrets (metadata only — never values)

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).

Kastell Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "kastelldev-kastell": {
      "command": "npx",
      "args": [
        "-y",
        "kastell"
      ]
    }
  }
}

1Claw Vault Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "1claw-vault": {
      "command": "npx",
      "args": [
        "-y",
        "@1claw/mcp"
      ],
      "env": {
        "ONECLAW_AGENT_API_KEY": "YOUR_ONECLAW_AGENT_API_KEY_HERE",
        "ONECLAW_AGENT_TOKEN": "YOUR_ONECLAW_AGENT_TOKEN_HERE",
        "ONECLAW_VAULT_ID": "YOUR_ONECLAW_VAULT_ID_HERE",
        "ONECLAW_LOCAL_ONLY": "YOUR_ONECLAW_LOCAL_ONLY_HERE",
        "ONECLAW_LOCAL_VAULT": "YOUR_ONECLAW_LOCAL_VAULT_HERE",
        "ONECLAW_DAEMON_SOCKET": "YOUR_ONECLAW_DAEMON_SOCKET_HERE",
        "MCP_TRANSPORT": "YOUR_MCP_TRANSPORT_HERE",
        "PORT": "YOUR_PORT_HERE"
      }
    }
  }
}

Frequently Asked Questions

Kastell is categorized under Security and uses a local stdio subprocess. In contrast, 1Claw Vault belongs to Security using local stdio subprocess. Select Kastell when you need capabilities focused on security and 1Claw Vault when you require tools for security.

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