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home / skills / jeremylongshore / claude-code-plugins-plus-skills / s3-bucket-policy-generator

s3-bucket-policy-generator skill

/skills/13-aws-skills/s3-bucket-policy-generator

This skill helps automate s3 bucket policy generation by providing step-by-step guidance and production-ready configurations.

npx playbooks add skill jeremylongshore/claude-code-plugins-plus-skills --skill s3-bucket-policy-generator

Review the files below or copy the command above to add this skill to your agents.

Files (1)
SKILL.md
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---
name: "s3-bucket-policy-generator"
description: |
  Generate s3 bucket policy generator operations. Auto-activating skill for AWS Skills.
  Triggers on: s3 bucket policy generator, s3 bucket policy generator
  Part of the AWS Skills skill category. Use when working with s3 bucket policy generator functionality. Trigger with phrases like "s3 bucket policy generator", "s3 generator", "s3".
allowed-tools: "Read, Write, Edit, Bash(aws:*)"
version: 1.0.0
license: MIT
author: "Jeremy Longshore <[email protected]>"
---

# S3 Bucket Policy Generator

## Overview

This skill provides automated assistance for s3 bucket policy generator tasks within the AWS Skills domain.

## When to Use

This skill activates automatically when you:
- Mention "s3 bucket policy generator" in your request
- Ask about s3 bucket policy generator patterns or best practices
- Need help with amazon web services skills covering compute, storage, networking, serverless, and aws-specific best practices.

## Instructions

1. Provides step-by-step guidance for s3 bucket policy generator
2. Follows industry best practices and patterns
3. Generates production-ready code and configurations
4. Validates outputs against common standards

## Examples

**Example: Basic Usage**
Request: "Help me with s3 bucket policy generator"
Result: Provides step-by-step guidance and generates appropriate configurations


## Prerequisites

- Relevant development environment configured
- Access to necessary tools and services
- Basic understanding of aws skills concepts


## Output

- Generated configurations and code
- Best practice recommendations
- Validation results


## Error Handling

| Error | Cause | Solution |
|-------|-------|----------|
| Configuration invalid | Missing required fields | Check documentation for required parameters |
| Tool not found | Dependency not installed | Install required tools per prerequisites |
| Permission denied | Insufficient access | Verify credentials and permissions |


## Resources

- Official documentation for related tools
- Best practices guides
- Community examples and tutorials

## Related Skills

Part of the **AWS Skills** skill category.
Tags: aws, lambda, s3, ec2, cloudformation

Overview

This skill automates generation of AWS S3 bucket policies and provides actionable guidance for secure, least-privilege access. It produces policy JSON, suggests conditions and principals, and validates common structural issues. Use it to accelerate policy authoring, review, and deployment preparations.

How this skill works

You describe the access scenario (who, what, where, and constraints) and the skill maps that to IAM policy statements: principals, actions, resources, and conditions. It generates ready-to-use JSON policy documents, flags common mistakes, and recommends restrictive alternatives or required IAM roles. The skill also checks for typical validation errors and notes permission boundary or cross-account implications.

When to use it

  • Creating a new S3 bucket policy for public or cross-account access
  • Converting access requirements into least-privilege policy statements
  • Reviewing or tightening existing bucket policies to meet security standards
  • Generating policy snippets for CloudFormation, Terraform, or CI/CD pipelines
  • Validating policy structure before deployment

Best practices

  • Define specific principals and avoid wildcards for Principal or Resource when possible
  • Use explicit Deny statements and conditions (aws:SourceIp, aws:SecureTransport) to enforce security posture
  • Limit actions to the minimum required (e.g., s3:GetObject vs s3:* ) and scope resources tightly (include object prefixes)
  • Prefer bucket policies for cross-account access and IAM policies for user/role permissions; document intent and expiration for temporary access
  • Validate generated JSON with AWS tools and run a security review for public or wide-access policies

Example use cases

  • Generate a policy that grants a read-only application role access to a specific object prefix
  • Create a cross-account access policy allowing a partner account to PutObject with an explicit condition on SourceIp
  • Produce a policy that forces TLS (SecureTransport) and blocks non-HTTPS requests
  • Draft a public-read static website bucket policy with safe object-level constraints and recommended mitigations
  • Emit policy JSON formatted for embedding into CloudFormation or Terraform templates

FAQ

Can this skill deploy policies directly to AWS?

No. It generates and validates policy JSON and provides deployment instructions; you must apply policies using your preferred AWS tools with appropriate credentials.

How does it handle sensitive public access concerns?

It flags public or wildcard principals, suggests stricter alternatives, and recommends conditions and monitoring if public access is required.

Will generated policies follow least-privilege principles?

Yes. The skill aims to produce least-privilege statements by default and will suggest narrower actions and resource ARNs when you provide precise requirements.