# WARDEN — MCP Security Firewall (npm · @aimarket/warden)

MCP security firewall: vet tool definitions before they reach the model.

- Trust score: 40/100 (low)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-22

## Components

- npm · `@aimarket/warden`: 40/100 (this document), [markdown](https://verifymcp.io/servers/alexar76-warden/aimarket-warden.md), [page](https://verifymcp.io/servers/alexar76-warden/aimarket-warden)

## Channel facts

- Registry: `npm`
- Package: `@aimarket/warden`
- Version: `0.5.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-22.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 48/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 17 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 0/100
  - Schema quality not yet verified: this package installed, but its server did not start, so we have no schema to assess.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: this package installed, but its server did not start, so we have no schema to compare.
- **Tool Coverage**: 0/100
  - Tool coverage not yet verified: this package installed, but its server did not start, so we have no tool definitions to assess.
- **Tool Safety**: 0/100
  - Tool safety not yet verified: this package installed, but its server did not start, so we have no tool text to scan.
- **Capabilities**: 0/100
  - Protocol version not yet verified: this package installed, but its server did not start, so we never saw its MCP handshake.

**Unverified: 5 categories.** Categories scored 0 because our sandbox run of this package has not given us the schema these checks need to read. That is a gap on our side rather than a finding about the package, and we only credit what we can confirm, so the score stands at 0 until the capture succeeds. We are working through the fleet, so this normally clears without any action from you.

## Install

### How do I install the WARDEN — MCP Security Firewall server?

WARDEN — MCP Security Firewall runs locally as an npm package, launched with npx -y @aimarket/warden. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add alexar76-warden -- npx -y @aimarket/warden
```

### Cursor

```json
{
  "mcpServers": {
    "alexar76-warden": {
      "command": "npx",
      "args": [
        "-y",
        "@aimarket/warden"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "alexar76-warden": {
      "command": "npx",
      "args": [
        "-y",
        "@aimarket/warden"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add alexar76-warden -- npx -y @aimarket/warden
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "alexar76-warden": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@aimarket/warden"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add alexar76-warden --command npx --arg -y --arg @aimarket/warden
```

### Hermes

```yaml
mcp_servers:
  alexar76-warden:
    command: "npx"
    args: ["-y", "@aimarket/warden"]
```

### Netclaw

```json
{
  "McpServers": {
    "alexar76-warden": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@aimarket/warden"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add alexar76-warden -t stdio -c npx -a -y @aimarket/warden
```

### Other

```json
{
  "mcpServers": {
    "alexar76-warden": {
      "command": "npx",
      "args": [
        "-y",
        "@aimarket/warden"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-05 (score 40, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-09-04 (score 25)

First indexed and scored.

## MCP tools (0)

Tools for package channels are captured by running the package in an isolated sandbox. The most recent sandbox run could not capture a tool list from this package.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/alexar76-warden/aimarket-warden#diagnostics

## Score history

- 2026-09-22: 40
- 2026-09-21: 40
- 2026-09-20: 40
- 2026-09-19: 40
- 2026-09-18: 40
- 2026-09-17: 40
- 2026-09-16: 40
- 2026-09-15: 40
- 2026-09-14: 40
- 2026-09-13: 40
- 2026-09-12: 40
- 2026-09-11: 40
- 2026-09-10: 40
- 2026-09-09: 40
- 2026-09-08: 40
- 2026-09-07: 40
- 2026-09-06: 40
- 2026-09-05: 40
- 2026-09-04: 25

## Common questions

### What is the WARDEN — MCP Security Firewall server?

WARDEN — MCP Security Firewall is listed in the public MCP registry as io.github.alexar76/warden. MCP security firewall: vet tool definitions before they reach the model. This page covers its npm package (@aimarket/warden).

### Is the WARDEN — MCP Security Firewall server safe to use?

WARDEN — MCP Security Firewall scores 40 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 22 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### Is the WARDEN — MCP Security Firewall server still maintained?

WARDEN — MCP Security Firewall is still listed as active in the MCP registry. We last reached this channel on 22 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the WARDEN — MCP Security Firewall server under?

WARDEN — MCP Security Firewall declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@aimarket/warden
- Socket report: https://socket.dev/npm/package/@aimarket/warden
- Repository: https://github.com/alexar76/warden
- Changelog RSS feed: https://verifymcp.io/servers/alexar76-warden/aimarket-warden.xml
- Changelog JSON feed: https://verifymcp.io/servers/alexar76-warden/aimarket-warden.json
- HTML version of this page: https://verifymcp.io/servers/alexar76-warden/aimarket-warden