Amazon S3 Bucket MCP Server with 7 Tools for Claude, Cursor, and AI Agents

Grant your AI agent precise, scoped access to a single Amazon S3 bucket — no more, no less. Unlike full S3 access, this integration enforces the principle of least privilege: your agent can read, write, and manage objects exclusively within one pre-configured bucket.

What you can do

• Browse Objects — List and navigate files within the bucket using prefix and delimiter filters
• Read Data — Retrieve object contents or inspect metadata (headers, content type, size) without downloading
• Write Data — Upload string or JSON content as objects directly into the bucket
• Clean Up — Delete specific objects to maintain storage hygiene
• Audit Security — Inspect the bucket's access policy and ACL to ensure compliance

How it works

1. Subscribe to this server
2. Enter your AWS Access Key, Secret Key, Region, and the target Bucket Name
3. Your agent operates exclusively within that bucket — no access to other buckets or account-level operations

Why single-bucket?

AI agents should follow the principle of least privilege. Granting full S3 access to an autonomous agent creates unnecessary blast radius. This server confines the agent to a single bucket, which means:

• No accidental bucket creation or deletion


• No cross-bucket data exposure


• Clearer audit trail for compliance


• Safer agent-to-agent delegation

Who is this for?

• AI Engineers — give each agent a dedicated data workspace without exposing your entire cloud storage
• Data Teams — let agents process, query, and write results to a specific data lake partition
• Platform Engineers — enforce tenant isolation by assigning one bucket per agent or workflow
• Security-Conscious Teams — minimize attack surface by scoping storage access to exactly what's needed