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

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

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

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

Which MCP server has more tools and community activity?

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

Can I use both 1Claw Vault and Kastell 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

1Claw Vault vs Kastell

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

1Claw Vault

Security · Local stdio

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

Kastell

Security · Local stdio

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

Verdict Summary: Choose 1Claw Vault if you need specialized Security tools running via a local process. Choose Kastell 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 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.

Explore 1Claw Vault Details

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.

Feature & Specification Comparison

Specification	1Claw Vault Security	Kastell kastelldev Security
Summary
Category & Scope	Security	Security
Quality signal

Tools & Capabilities Breakdown

1Claw Vault Tools (36)

list_secrets

List all secrets (metadata only — never values)

get_secret

Fetch the decrypted value of a secret by path. Accepts optional `client_share` for MPC vaults.

put_secret

Create or update a secret (creates a new version). Response includes `client_share` when the vault has MPC enabled.

delete_secret

Soft-delete a secret at a path

describe_secret

Get metadata without fetching the value

rotate_and_store

Store a new value for an existing secret and return the version

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).

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"
      }
    }
  }
}

Kastell Configuration

mcpServers (Claude Desktop / Cursor)

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

Frequently Asked Questions

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

More alternatives to 1Claw Vault More alternatives to Kastell Security category hub