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SKILL verified MIT Self-run

Aws S3

skill-ashish7802-awesome-api-skills-aws-s3 · by ashish7802

A Claude skill from ashish7802/awesome-api-skills.

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Install

$ agentstack add skill-ashish7802-awesome-api-skills-aws-s3

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

AWS S3 API Skill

Overview

Amazon Simple Storage Service (S3) provides highly scalable object storage. This skill details the AWS SDK v3 for Node.js.

Installation

npm install @aws-sdk/client-s3 @aws-sdk/s3-request-presigner
pip install boto3

Authentication

Authenticate via IAM Roles (in EC2/Lambda) or Access Keys (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY). Avoid hardcoded credentials.

Core Concepts

  • Bucket: The root container for objects.
  • Object: A file and its metadata.
  • Presigned URL: A temporary URL granting access to upload/download a specific object.

Common Workflows

  1. Instantiate S3Client.
  2. Construct a PutObjectCommand.
  3. Send the command to upload a stream or buffer.

Error Handling

Catch S3ServiceException. Common errors include NoSuchBucket and AccessDenied. Ensure bucket policies and IAM permissions align.

Security

Block Public Access at the account level. Always use Presigned URLs for client-side uploads rather than routing large files through your API server.

Rate Limits

S3 automatically scales, but standard performance supports 3,500 PUT/COPY/POST/DELETE and 5,500 GET/HEAD requests per second per prefix.

Best Practices

Use Multipart Upload for files larger than 100MB. Use random prefixes (like UUIDs) in object keys to avoid thermal hotspots in S3 partitions.

Troubleshooting

If a presigned URL fails with SignatureDoesNotMatch, ensure the HTTP method and headers exactly match what was requested during generation.

References

Why use this skill

Use this when your agent works with aws-s3 — structured patterns beat pasted docs and prevent common hallucinations.

AI pitfalls

  • Using outdated SDK or API versions from training data
  • Inventing environment variable names
  • Omitting error handling and retry logic

Production checklist

  • [ ] Secrets in environment variables, not source code
  • [ ] Error handling and logging in place
  • [ ] Rate limits and timeouts configured

Related skills

  • [terraform](../terraform/SKILL.md) — provisioned by
  • [pulumi](../pulumi/SKILL.md) — provisioned by

> Last Verified: 2026-07-02

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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