Add S3 bucket guardrail audit helper

[its-amann]

Summary

• Adds an offline S3 bucket guardrail audit helper for the Civil ID upload bucket evidence package.
• Checks public policy status, all block-public-access flags, default encryption, versioning, bucket-owner-enforced ownership, incomplete multipart cleanup, and wildcard write CORS.
• Includes a sanitized sample fixture and documentation so maintainers can review bucket posture without exposing raw policies, object keys, or secrets in PR comments.

Verification

ode --test tools/s3-bucket-guardrails.test.mjs

ode tools/audit-s3-bucket-guardrails.mjs --input tools/fixtures/s3-bucket-guardrails.sample.json

• git diff --check

/claim #55

[coderabbitai]

Warning

Rate limit exceeded

@its-amann has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 45 minutes and 16 seconds before requesting another review.

You’ve run out of usage credits. Purchase more in the billing tab.

⌛ How to resolve this issue?

After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

We recommend that you space out your commits to avoid hitting the rate limit.

🚦 How do rate limits work?

CodeRabbit enforces hourly rate limits for each developer per organization.

Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.

Please see our FAQ for further information.

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 6d665d4f-9971-466a-bcda-1646bbe1a8f8

📥 Commits

Reviewing files that changed from the base of the PR and between 7b023ff and 7277514.

📒 Files selected for processing (4)

• docs/security/s3-bucket-guardrail-audit.md
• tools/audit-s3-bucket-guardrails.mjs
• tools/fixtures/s3-bucket-guardrails.sample.json
• tools/s3-bucket-guardrails.test.mjs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}