Docker Compose Security Audit

MCP server that audits docker-compose.yml files for security misconfigurations. Trivy-grade check catalog, designed for AI agents — every finding ships with a severity rating, full remediation text, and a YAML fix snippet you can paste.

Built by Unbearable TechTips. Pay-per-event pricing — you only pay when an audit runs.

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What it does

Point any MCP-capable client (Claude Desktop, Cursor, n8n, Make, Zapier, custom agents) at this server, hand it the contents of a docker-compose.yml, and get back a structured report with:

• Severity — high / medium / low / info
• Service — which compose service the finding affects
• Description — what's wrong and why it matters
• Remediation — what to do about it
• Fix snippet — YAML you can paste directly into the file

Tools

Tool	Purpose
audit_compose(compose_yaml? | compose_url?, min_severity='low')	Run all checks, return full report
check_privilege(...)	Container privilege & capability issues only
check_network(...)	Network exposure issues only
check_filesystem(...)	Volume mount & filesystem issues only
check_secrets(...)	Secret hygiene issues only
check_resources(...)	Resource limit issues only
check_image_hygiene(...)	Image tag / registry / pinning issues only
check_runtime_lifecycle(...)	Healthcheck / restart / init issues only
check_logging(...)	Logging driver / rotation issues only
check_compose_hygiene(...)	Deprecated fields / Compose-spec hygiene only
list_checks(category?)	Browse the full check catalog

All audit-running tools accept the same input:

• compose_yaml (string) — paste the YAML content directly, OR
• compose_url (string) — public HTTPS URL to fetch (e.g. GitHub raw URL)

Provide exactly one. min_severity defaults to low (drops info findings); set to medium or high to filter further.

Example response (truncated)

{
  "summary": {
    "total_findings": 14,
    "by_severity": {"high": 3, "medium": 6, "low": 5, "info": 0},
    "by_category": {"privilege": 4, "network": 3, "secrets": 2, "...": 5}
  },
  "findings": [
    {
      "id": "DCS-002",
      "category": "privilege",
      "severity": "high",
      "service": "web",
      "title": "Privileged mode enabled",
      "description": "Service 'web' has `privileged: true`...",
      "remediation": "Remove `privileged: true`. If you need specific capabilities...",
      "fix_yaml_snippet": "    # remove `privileged: true`; if needed, use cap_add or devices selectively",
      "references": ["CIS-Docker-5.4", "NIST-800-190"]
    },
    ...
  ]
}

Pricing

Event	USD
Any audit / check_* tool call	$0.02
list_checks discovery call	$0.005

You pay only when a tool is invoked. No subscription, no monthly minimums.

Check catalog (25 live in v1, growing toward 54)

Category	Live checks
Privilege	Root user (DCS-001), privileged mode (DCS-002), dangerous capabilities (DCS-003), cap_add: ALL (DCS-004), cap_drop: ALL missing (DCS-005), no-new-privileges missing (DCS-006)
Network	network_mode: host (DCS-010), port bound to 0.0.0.0 (DCS-011), SSH port exposed (DCS-013), DB port exposed (DCS-014)
Filesystem	/var/run/docker.sock mount (DCS-018), host root mount (DCS-019), sensitive host paths (DCS-020)
Secrets	Hardcoded secret in env (DCS-026), secret-pattern env without Docker secrets (DCS-027)
Resources	No memory limit (DCS-032), no CPU limit (DCS-033), no PID limit (DCS-034)
Image hygiene	Unpinned / :latest image (DCS-037)
Runtime lifecycle	No healthcheck (DCS-043), no restart policy (DCS-044)
Logging	No log driver (DCS-048), no log rotation (DCS-049)
Compose hygiene	Deprecated version: field (DCS-051), depends_on without healthcheck condition (DCS-052)

Use list_checks to get the canonical, up-to-date catalog with IDs, severities, and titles.

Connecting from Claude Desktop

Add to your MCP config:

{
  "mcpServers": {
    "compose-audit": {
      "transport": "streamable-http",
      "url": "https://YOUR-ACTOR-URL.apify.actor/mcp"
    }
  }
}

(Replace YOUR-ACTOR-URL with the Standby URL shown on the Apify Store page after you start the Actor.)

Limits

• YAML size: 1 MB cap per audit call
• URL fetch: 5-second timeout, max 3 redirects, HTTPS only
• Session timeout: 5 minutes of inactivity

What's NOT covered (yet)

Pure static analysis of the compose file only. Out of scope for this version:

• Image vulnerability scanning (use Trivy / Grype for that)
• Live container inspection
• Kubernetes / Helm manifests (different surface)
• Dockerfile-specific lint (use Hadolint)

The next 29 checks on the v1.x → v2 roadmap include build-context security, additional capability checks, secret-pattern detection in build args, and registry trust verification.

Source / contact

Issues, ideas, or false-positive reports: open an issue on the GitHub repo or email unbearabledev@gmail.com.

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