OpenVAS

Lint & Test Docker Integration tests Startup egress audit

A self-hosted MCP server that gives AI agents structured access to OpenVAS / Greenbone vulnerability scanning — without sending your data anywhere.

OpenVAS has no native interface for AI agents. Most integrations require cloud connectivity or expose GVM credentials to every client. OpenVAS-MCP solves this:

• Local-first. Talks only to your GVM instance. No telemetry, no external calls — verified by CI.
• Credential isolation. AI agents authenticate to the MCP server; the server holds the single GVM service account.
• Thin bridge. Returns structured scan data as-is. Analysis and reporting logic belong in the agent or a platform built on top.

See docs/architecture.md for a full architecture diagram and design details.

Quick start

0. Vibeinstall (optional, if you trust claude more than yourself)

Run in your terminal:

claude "install this, make no mistake."

If you prefer to stay in control, follow the manual setup below.

1. Get a GVM instance

Don't have one? Spin up the bundled Greenbone Community Edition stack:

docker compose -f docker/openvas/compose.yaml up -d

2. Connect an MCP client

stdio (Claude Desktop, Cursor, Windsurf, Cline, …)

Requirements: Python 3.10+

git clone https://github.com/CyberSecAuto-Labs/OpenVAS-MCP
cd OpenVAS-MCP
python3.11 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt

Add to mcpServers in your client config file:

{
  "mcpServers": {
    "openvas": {
      "command": "/path/to/.venv/bin/python",  // ← edit this to your venv path
      "args": ["-m", "openvas_mcp"],
      "env": { "GVM_PASSWORD": "secret" }  // ← edit this to your GVM password
    }
  }
}

Config file locations:

Client	Path
Claude Desktop (macOS)	~/Library/Application Support/Claude/claude_desktop_config.json
Claude Desktop (Windows)	%APPDATA%\Claude\claude_desktop_config.json
Cursor	~/.cursor/mcp.json
Windsurf	~/.codeium/windsurf/mcp_config.json
Cline / Roo Code	via the MCP panel in the VS Code extension

HTTP/SSE (networked agents)

Requirements: Docker

Download the compose files from the latest release and run:

# GVM running locally via Unix socket
MCP_API_KEYS="supersecrettoken:my-agent" GVM_PASSWORD=secret docker compose up

# GVM on a remote host via TCP
MCP_API_KEYS="supersecrettoken:my-agent" GVM_HOST=192.168.1.10 GVM_PASSWORD=secret docker compose up

[!NOTE] MCP_API_KEYS is a comma-separated list of token:name pairs sent as a Bearer token by the MCP client. Multiple clients: "tok1:agent1,tok2:agent2". Pass MCP_ALLOW_UNAUTHENTICATED=1 instead to skip auth on a trusted network.

Point your MCP client at the server:

{
  "mcpServers": {
    "openvas": {
      "url": "http://your-server:8000/sse",  // ← edit this to your server address
      "headers": {
        "Authorization": "Bearer supersecrettoken"  // ← your MCP_API_KEYS token
      }
    }
  }
}

[!WARNING] Plain TCP connections (GVM_HOST set, GVM_TLS unset) send GVM credentials unencrypted. Use GVM_TLS=1 or a Unix socket for anything beyond local dev.

All-in-one dev setup

Greenbone Community Edition + MCP server from source in one go:

# Start the Greenbone stack
docker compose -f docker/openvas/compose.yaml up -d

# Start the MCP server, connected via gvmd socket
GVM_PASSWORD=secret docker compose -f compose.yaml -f compose.override.yaml up --build

[!TIP] See compose.override.yaml for how the socket volume is mounted.

Configuration

Variable	Default	Description
GVM_PASSWORD	—	GVM password (required)
GVM_SOCKET_PATH	/run/gvmd/gvmd.sock	Unix socket path (default connection)
GVM_HOST	—	Connect via TCP instead of socket (IPv4 and IPv6)
MCP_TRANSPORT	stdio	stdio, sse, or streamable-http
MCP_API_KEYS	—	Bearer API keys for HTTP transport auth (token:name,...)

See docs/configuration.md for the full reference, including TLS options, policy file, scan limits, and logging.

Available tools

Tool	Description
list_targets	Return all scan targets
create_target	Create a target with specified hosts/CIDRs
list_tasks	Return all scan tasks
start_scan	Create and start a scan against a target
get_scan_status	Poll status and progress of a running scan
fetch_scan_results	Retrieve findings, optionally filtered by minimum severity

Example: "Scan 192.168.1.0/24 and show me anything above severity 7" — the agent calls create_target → start_scan → get_scan_status → fetch_scan_results(min_severity=7.0).

Release integrity

Every release image is:

• Signed with cosign keyless OIDC signing — no long-lived key to compromise.
• SBOM attached — a CycloneDX JSON bill of materials is generated with syft and attached to each GitHub Release.
• Vulnerability-scanned — grype scans the SBOM on every PR (vuln-scan.yml) and at release time, failing on fixable high severity findings (--only-fixed).
• Egress-audited — the startup-egress workflow traces connect() syscalls via strace on every push and PR, asserting no unexpected outbound connections at startup. Integration tests extend this to live GMP code paths.

Verify the image signature before running:

cosign verify \
  --certificate-identity-regexp "https://github.com/CyberSecAuto-Labs/OpenVAS-MCP/.github/workflows/release.yml@refs/tags/.*" \
  --certificate-oidc-issuer "https://token.actions.githubusercontent.com" \
  ghcr.io/cybersecauto-labs/openvas-mcp:<version>

Docs

• docs/architecture.md — architecture diagram, component overview, and transport details
• docs/configuration.md — full environment variable reference, TLS, policy file, scan limits, logging
• docs/design.md — design decisions and known limitations
• docs/ci.md — CI workflows, guarantees, and tradeoffs

License

Apache 2.0