/prowler-sdk-check

name: prowler-sdk-check
description: >
  Creates Prowler security checks following SDK architecture patterns.
  Trigger: When creating or updating a Prowler SDK security check (implementation + metadata) for any provider (AWS, Azure, GCP, K8s, GitHub, etc.).
license: Apache-2.0
metadata:
  author: prowler-cloud
  version: "1.0"
  scope: [root, sdk]
  auto_invoke:
    - "Creating new checks"
    - "Updating existing checks and metadata"
allowed-tools: Read, Edit, Write, Glob, Grep, Bash, WebFetch, WebSearch, Task

Check Structure

prowler/providers/{provider}/services/{service}/{check_name}/
├── __init__.py
├── {check_name}.py
└── {check_name}.metadata.json

---

Step-by-Step Creation Process

1. Prerequisites

• **Verify check doesn't exist**: Search `prowler/providers/{provider}/services/{service}/`
• **Ensure provider and service exist** - create them first if not
• **Confirm service has required methods** - may need to add/modify service methods to get data

2. Create Check Files

mkdir -p prowler/providers/{provider}/services/{service}/{check_name}
touch prowler/providers/{provider}/services/{service}/{check_name}/__init__.py
touch prowler/providers/{provider}/services/{service}/{check_name}/{check_name}.py
touch prowler/providers/{provider}/services/{service}/{check_name}/{check_name}.metadata.json

3. Implement Check Logic

from prowler.lib.check.models import Check, Check_Report_{Provider}
from prowler.providers.{provider}.services.{service}.{service}_client import {service}_client

class {check_name}(Check):
    """Ensure that {resource} meets {security_requirement}."""
    def execute(self) -> list[Check_Report_{Provider}]:
        """Execute the check logic.

        Returns:
            A list of reports containing the result of the check.
        """
        findings = []
        for resource in {service}_client.{resources}:
            report = Check_Report_{Provider}(metadata=self.metadata(), resource=resource)
            report.status = "PASS" if resource.is_compliant else "FAIL"
            report.status_extended = f"Resource {resource.name} compliance status."
            findings.append(report)
        return findings

4. Create Metadata File

See complete schema below and `assets/` folder for complete templates. For detailed field documentation, see `references/metadata-docs.md`.

5. Verify Check Detection

uv run python prowler-cli.py {provider} --list-checks | grep {check_name}

6. Run Check Locally

uv run python prowler-cli.py {provider} --log-level ERROR --verbose --check {check_name}

7. Create Tests

See `prowler-test-sdk` skill for test patterns (PASS, FAIL, no resources, error handling).

---

Check Naming Convention

{service}_{resource}_{security_control}

Examples:

• `ec2_instance_public_ip_disabled`
• `s3_bucket_encryption_enabled`
• `iam_user_mfa_enabled`

---

Metadata Schema (COMPLETE)

{
  "Provider": "aws",
  "CheckID": "{check_name}",
  "CheckTitle": "Human-readable title",
  "CheckType": [
    "Software and Configuration Checks/AWS Security Best Practices",
    "Software and Configuration Checks/Industry and Regulatory Standards/AWS Foundational Security Best Practices"
  ],
  "ServiceName": "{service}",
  "SubServiceName": "",
  "ResourceIdTemplate": "",
  "Severity": "low|medium|high|critical",
  "ResourceType": "AwsEc2Instance|Other",
  "ResourceGroup": "security|compute|storage|network",
  "Description": "**Bold resource name**. Detailed explanation of what this check evaluates and why it matters.",
  "Risk": "What happens if non-compliant. Explain attack vectors, data exposure risks, compliance impact.",
  "RelatedUrl": "",
  "AdditionalURLs": [
    "https://docs.aws.amazon.com/..."
  ],
  "Remediation": {
    "Code": {
      "CLI": "aws {service} {command} --option value",
      "NativeIaC": "```yaml\nResources:\n  Resource:\n    Type: AWS::{Service}::{Resource}\n    Properties:\n      Key: value  # This line fixes the issue\n```",
      "Other": "1. Console steps\n2. Step by step",
      "Terraform": "```hcl\nresource \"aws_{service}_{resource}\" \"example\" {\n  key = \"value\"  # This line fixes the issue\n}\n```"
    },
    "Recommendation": {
      "Text": "Detailed recommendation for remediation.",
      "Url": "https://hub.prowler.com/check/{check_name}"
    }
  },
  "Categories": [
    "identity-access",
    "encryption",
    "logging",
    "forensics-ready",
    "internet-exposed",
    "trust-boundaries"
  ],
  "DependsOn": [],
  "RelatedTo": [],
  "Notes": ""
}

Required Fields

| Field | Description | |-------|-------------| | `Provider` | Provider name: aws, azure, gcp, kubernetes, github, m365 | | `CheckID` | Must match class name and folder name | | `CheckTitle` | Human-readable title | | `Severity` | `low`, `medium`, `high`, `critical` | | `ServiceName` | Service being checked | | `Description` | What the check evaluates | | `Risk` | Security impact of non-compliance | | `Remediation.Code.CLI` | CLI fix command | | `Remediation.Recommendation.Text` | How to fix |

Severity Guidelines

| Severity | When to Use | |----------|-------------| | `critical` | Direct data exposure, RCE, privilege escalation | | `high` | Significant security risk, compliance violation | | `medium` | Defense-in-depth, best practice | | `low` | Informational, minor hardening |

---

Check Report Statuses

| Status | When to Use | |--------|-------------| | `PASS` | Resource is compliant | | `FAIL` | Resource is non-compliant | | `MANUAL` | Requires human verification |

---

Common Patterns

AWS Check with Regional Resources

from prowler.lib.check.models import Check, Check_Report_AWS
from prowler.providers.aws.services.s3.s3_client import s3_client

class s3_bucket_encryption_enabled(Check):
    def execute(self) -> list[Check_Report_AWS]:
        findings = []
        for bucket in s3_client.b