docs: Add OCSF field requirements for Prowler Cloud integration (#10245)

Co-authored-by: mintlify[bot] <109931778+mintlify[bot]@users.noreply.github.com>
Co-authored-by: Andoni A. <14891798+andoniaf@users.noreply.github.com>

docs/developer-guide/provider.mdx

@@ -3406,6 +3406,40 @@ Use existing providers as templates, this will help you to understand better the
 
     - **Use Rules**: Use rules to ensure the code generated by AI is following the way of working in Prowler.
 
+---
+
+## OCSF Field Requirements for Prowler Cloud Integration
+
+When implementing a new provider that supports the `--push-to-cloud` feature, specific OCSF fields must be correctly populated to ensure proper findings ingestion into Prowler Cloud.
+
+### Required OCSF Fields
+
+The following fields in the OCSF output are critical for successful ingestion:
+
+| Field | Requirement | Description |
+|-------|-------------|-------------|
+| `provider_uid` | Must match the UID used when registering the provider in the API | This identifier links findings to the correct provider in Prowler Cloud |
+| `provider` | Must be the provider name | The name of the provider (e.g., `aws`, `azure`, `gcp`, `googleworkspace`) |
+| `finding_info.uid` | Must be unique | Each finding must have a unique identifier to avoid duplicates |
+| `resources.uid` | Must have a value | The resource UID cannot be empty; it identifies the specific resource being assessed |
+
+### Implementation Reference
+
+These fields are set in the OCSF output generation. See the [OCSF output implementation](https://github.com/prowler-cloud/prowler/blob/master/prowler/lib/outputs/ocsf/ocsf.py) for reference.
+
+### Validation Checklist
+
+Before releasing a new provider with `--push-to-cloud` support:
+
+- [ ] Verify `provider_uid` matches the UID used in the API to register the provider
+- [ ] Confirm `provider` field contains the correct provider name
+- [ ] Ensure all `finding_info.uid` values are unique across findings
+- [ ] Validate that `resources.uid` is populated for every finding
+
+<Tip>
+  Use `python scripts/validate_ocsf_output.py output/*.ocsf.json` to automate these checks.
+</Tip>
+
 ## Checklist for New Providers
 
 ### CLI Integration Only

scripts/validate_ocsf_output.py

@@ -0,0 +1,184 @@
+#!/usr/bin/env python3
+"""
+OCSF Output Validator
+
+Validates OCSF JSON output files for Prowler Cloud integration requirements:
+- finding_info.uid uniqueness across all findings
+- resources[*].uid populated for every resource
+
+Usage:
+    python validate_ocsf_output.py <path_to_ocsf_json> [...]
+
+Example:
+    python validate_ocsf_output.py output/*.ocsf.json
+"""
+
+import glob
+import json
+import sys
+from argparse import ArgumentParser
+from pathlib import Path
+
+
+def load_ocsf_file(path: str) -> list[dict]:
+    """Load and parse an OCSF JSON file containing an array of findings."""
+    file_path = Path(path)
+    if not file_path.exists():
+        raise FileNotFoundError(f"File not found: {path}")
+    if not file_path.suffix == ".json" and not path.endswith(".ocsf.json"):
+        raise ValueError(f"Expected .ocsf.json file, got: {path}")
+
+    with open(file_path) as f:
+        data = json.load(f)
+
+    if not isinstance(data, list):
+        raise ValueError(f"Expected JSON array, got {type(data).__name__}")
+
+    return data
+
+
+def validate_unique_finding_uids(findings: list[dict]) -> list[str]:
+    """Check that finding_info.uid is present and unique across all findings."""
+    errors = []
+    seen = {}
+
+    for idx, finding in enumerate(findings):
+        finding_info = finding.get("finding_info")
+        if not finding_info or not isinstance(finding_info, dict):
+            errors.append(f"Finding [{idx}]: missing 'finding_info' object")
+            continue
+
+        uid = finding_info.get("uid")
+        if not uid:
+            errors.append(f"Finding [{idx}]: missing 'finding_info.uid'")
+            continue
+
+        if uid in seen:
+            errors.append(
+                f"Finding [{idx}]: duplicate 'finding_info.uid' = '{uid}' "
+                f"(first seen at index {seen[uid]})"
+            )
+        else:
+            seen[uid] = idx
+
+    return errors
+
+
+def validate_resources_uid(findings: list[dict]) -> list[str]:
+    """Check that every resource in every finding has a non-empty uid."""
+    errors = []
+
+    for idx, finding in enumerate(findings):
+        resources = finding.get("resources")
+        if not resources:
+            errors.append(f"Finding [{idx}]: missing or empty 'resources' array")
+            continue
+
+        if not isinstance(resources, list):
+            errors.append(f"Finding [{idx}]: 'resources' is not an array")
+            continue
+
+        for res_idx, resource in enumerate(resources):
+            uid = resource.get("uid")
+            if not uid or (isinstance(uid, str) and not uid.strip()):
+                errors.append(
+                    f"Finding [{idx}], resource [{res_idx}]: "
+                    f"missing or empty 'resources[].uid'"
+                )
+
+    return errors
+
+
+def validate_file(path: str) -> dict:
+    """Run all validations on a single OCSF file."""
+    result = {"file": path, "valid": True, "errors": [], "finding_count": 0}
+
+    try:
+        findings = load_ocsf_file(path)
+    except (FileNotFoundError, ValueError, json.JSONDecodeError) as e:
+        result["valid"] = False
+        result["errors"].append(str(e))
+        return result
+
+    result["finding_count"] = len(findings)
+
+    if not findings:
+        return result
+
+    uid_errors = validate_unique_finding_uids(findings)
+    resource_errors = validate_resources_uid(findings)
+
+    all_errors = uid_errors + resource_errors
+    if all_errors:
+        result["valid"] = False
+        result["errors"] = all_errors
+
+    return result
+
+
+def print_report(results: list[dict]):
+    """Print a formatted validation report."""
+    print("\n" + "=" * 60)
+    print("OCSF OUTPUT VALIDATION REPORT")
+    print("=" * 60)
+
+    total_files = len(results)
+    passed = sum(1 for r in results if r["valid"])
+    failed = total_files - passed
+    total_findings = sum(r["finding_count"] for r in results)
+
+    for result in results:
+        print(f"\nFile: {result['file']}")
+        print(f"  Findings: {result['finding_count']}")
+
+        if result["valid"]:
+            print("  Status: PASS")
+        else:
+            print("  Status: FAIL")
+            for error in result["errors"]:
+                print(f"    [X] {error}")
+
+    print("\n" + "-" * 60)
+    print(f"Files: {total_files} | Findings: {total_findings}")
+    print(f"Passed: {passed} | Failed: {failed}")
+    print("-" * 60)
+
+    if failed == 0:
+        print("RESULT: PASS")
+    else:
+        print("RESULT: FAIL")
+    print("=" * 60 + "\n")
+
+
+def main():
+    parser = ArgumentParser(
+        description="Validate OCSF output files for Prowler Cloud integration"
+    )
+    parser.add_argument(
+        "files",
+        nargs="+",
+        help="OCSF JSON file path(s) or glob pattern(s)",
+    )
+    args = parser.parse_args()
+
+    # Expand glob patterns
+    file_paths = []
+    for pattern in args.files:
+        expanded = glob.glob(pattern)
+        if expanded:
+            file_paths.extend(expanded)
+        else:
+            file_paths.append(pattern)
+
+    if not file_paths:
+        print("Error: No files matched the provided pattern(s).")
+        sys.exit(1)
+
+    results = [validate_file(path) for path in file_paths]
+    print_report(results)
+
+    sys.exit(0 if all(r["valid"] for r in results) else 1)
+
+
+if __name__ == "__main__":
+    main()