Bawbel Scanner MCP Server

Scan MCP servers and skill files for AVE vulnerabilities. Conformance scoring and threat intel.

Local serverstdioPython

What is the Bawbel Scanner MCP server?

Bawbel Scanner MCP server is a locally run integration for AI assistants that speak the Model Context Protocol. Scan MCP servers and skill files for AVE vulnerabilities. Conformance scoring and threat intel.

What you get

Bawbel MCP Server lets any MCP-compatible agent scan servers, check skill files, score conformance, manage justified suppressions, and query the AVE threat intelligence database mid-conversation.

What the assistant can call

Once Bawbel Scanner is connected, these are the calls the assistant has available:

  • scan_content — Scan raw text content for AVE vulnerabilities
  • scan_server_card — Fetch and scan an MCP server-card before connecting
  • scan_creds — Credential-focused scan (API keys, tokens, passwords, private keys)
  • scan_chain — Delegation chain scan (unsafe sub-agent spawning and inherited permissions)
  • check_conformance — Score a server manifest against the MCP spec (18 checks, A+ to F)
  • accept_finding — Insert a justified suppression with reason, reviewer, and optional expiry
  • lookup_ave — Get a full AVE record by ID with remediation guidance
  • search_ave — Search AVE records by keyword
  • list_ave — List all AVE records with optional severity/category filters
  • check_pins — Detect rug pull drift in a directory of skill files

Setting it up

The server ships on PyPI as bawbel-mcp, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.

Configuration and credentials

  • Python 3.10+ - bawbel-scanner>=1.2.2 (installed automatically) - fastmcp>=3.0.0 (installed automatically) The bawbel CLI must be available in PATH. Installing bawbel-mcp installs bawbel-scanner which provides the bawbel CLI. ---

Choosing this one

Plenty of file and storage access servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Bawbel Scanner's toolset — scan_content, scan_server_card, scan_creds and 7 more — is a fair guide to whether it matches your workflow. It is maintained by bawbel; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Bawbel Scanner's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Before you rely on it

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • With 10 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Bawbel Scanner.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the bawbel scanner mcp server does with a few real requests.

Available tools

ToolWhat it does
scan_contentScan raw text content for AVE vulnerabilities
scan_server_cardFetch and scan an MCP server-card before connecting
scan_credsCredential-focused scan (API keys, tokens, passwords, private keys)
scan_chainDelegation chain scan (unsafe sub-agent spawning and inherited permissions)
check_conformanceScore a server manifest against the MCP spec (18 checks, A+ to F)
accept_findingInsert a justified suppression with reason, reviewer, and optional expiry
lookup_aveGet a full AVE record by ID with remediation guidance
search_aveSearch AVE records by keyword
list_aveList all AVE records with optional severity/category filters
check_pinsDetect rug pull drift in a directory of skill files

How to install the Bawbel Scanner MCP server

{
  "mcpServers": {
    "bawbel": {
      "command": "uvx",
      "args": ["bawbel-mcp"]
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

  • Python 3.10+ - bawbel-scanner>=1.2.2 (installed automatically) - fastmcp>=3.0.0 (installed automatically) The bawbel CLI must be available in PATH. Installing bawbel-mcp installs bawbel-scanner which provides the bawbel CLI. ---

Example prompts to try

  • Use Bawbel Scanner to scan content.
  • Use Bawbel Scanner to scan server card.
  • Use Bawbel Scanner to scan creds.

Frequently asked questions

It connects Bawbel Scanner to MCP-compatible AI assistants such as Claude and Cursor, exposing 10 tools (scan_content, scan_server_card, scan_creds, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Bawbel Scanner directly.