# io.github.mlawsonking/agent-firewall-mcp (npm · agent-firewall-mcp)

Input/output safety for AI agents: known-pattern injection and obfuscation scan, URL/IP, secrets.

- Trust score: 69/100 (medium)
- Change this week: +23
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `agent-firewall-mcp`: 69/100 (this document), [markdown](https://verifymcp.io/servers/mlawsonking-agent-firewall-mcp/agent-firewall-mcp.md), [page](https://verifymcp.io/servers/mlawsonking-agent-firewall-mcp/agent-firewall-mcp)

## Channel facts

- Registry: `npm`
- Package: `agent-firewall-mcp`
- Version: `1.2.0`
- 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 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 45/100
  - 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 2 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 461 tokens (~92/item across 5 items; 5 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add mlawsonking-agent-firewall-mcp -- npx -y agent-firewall-mcp
```

### Codex

```bash
codex mcp add mlawsonking-agent-firewall-mcp -- npx -y agent-firewall-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mlawsonking-agent-firewall-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "agent-firewall-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add mlawsonking-agent-firewall-mcp --command npx --arg -y --arg agent-firewall-mcp
```

### Hermes

```yaml
mcp_servers:
  mlawsonking-agent-firewall-mcp:
    command: "npx"
    args: ["-y", "agent-firewall-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "mlawsonking-agent-firewall-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "agent-firewall-mcp"
      ]
    }
  }
}
```

## 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.

### 2026-08-02 (score 69, +48)

- [security regression] Provenance: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Malware scan: unverified → pass
- [functional regression] Tool coverage: 100 → unverified
- [functional improvement] Schema quality: unverified → excellent
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Stability: unverified → 0.20
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] License: unverified → pass
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Schema quality: unverified
- [functional] Licence: MIT

### 2026-07-31 (score 21, −7)

- [security] First check of Stability: unverified
- [functional] First check of Capabilities: unverified
- [functional] Package version: 1.0.1 → 1.2.0
- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 28, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 46)

First indexed and scored.

## MCP tools (5)

### `scan_content` (~110 tokens)

Scan untrusted text for prompt-injection patterns and Unicode obfuscation before an agent acts on it. Deterministic known-pattern matching plus hidden-character detection, not a classifier: novel phrasing is not covered. Pass text directly, or a url to fetch and scan. Runs fully locally: the input never leaves this machine.

Input parameters:

- `text` (string): The text to scan.
- `url` (string): A page to fetch and scan instead of text. Fetching is SSRF-guarded.

### `scan_secrets` (~86 tokens)

Find API keys, tokens, private keys and PII in text and return a redacted copy with the secret VALUES removed. Fully local: the text never leaves the machine. Matches 22 known credential formats plus generic assignments; a secret in an unknown format is not detected. Runs fully locally: the input never leaves this machine.

Input parameters:

- `text` (string, required): The text to scan.

### `check_url` (~98 tokens)

Assess a URL before fetching or showing it: structure, lookalike brand domains, punycode, embedded credentials, abuse-prone TLDs, plus domain age. The structural half is local; domain age needs RDAP. Network: needs rdap.org. The network is only used when the domain age is looked up (RDAP). The structural analysis is local and runs offline.

Input parameters:

- `url` (string, required): The URL to check.

### `check_ip` (~78 tokens)

Reputation for an IP address: Tor exit node, Spamhaus listing, ASN and owner, reverse DNS, datacenter or residential. Needs the network. Private and loopback addresses are answered locally. Network: needs Team Cymru DNS, Spamhaus ZEN, check.torproject.org.

Input parameters:

- `ip` (string, required): IPv4 or IPv6 address.

### `check_password` (~89 tokens)

Check whether a password appears in the Have I Been Pwned breach corpus. The password never leaves the machine: only the first 5 characters of its SHA-1 are sent (k-anonymity), and the match is done locally. Network: needs api.pwnedpasswords.com.

Input parameters:

- `password` (string, required): The password to check. Only a 5-character hash prefix is transmitted.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/mlawsonking-agent-firewall-mcp/agent-firewall-mcp#diagnostics

## Score history

- 2026-08-03: 69
- 2026-08-02: 69
- 2026-08-01: 21
- 2026-07-31: 21
- 2026-07-30: 28
- 2026-07-28: 46
- 2026-07-27: 46

## Links

- npm package: https://www.npmjs.com/package/agent-firewall-mcp
- Socket report: https://socket.dev/npm/package/agent-firewall-mcp
- Repository: https://github.com/mlawsonking/MCP
- Changelog RSS feed: https://verifymcp.io/servers/mlawsonking-agent-firewall-mcp/agent-firewall-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/mlawsonking-agent-firewall-mcp/agent-firewall-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/mlawsonking-agent-firewall-mcp/agent-firewall-mcp