MCP server for AWS S3 with fine-grained tool control and S3-compatible endpoint support.
To add s3 to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 10 environment variables, listed below.
Install
npx -y s3-aws-mcp-server@0.0.5Environment variables
AWS_ACCESS_KEY_IDSet in your MCP configAWS_SECRET_ACCESS_KEYSet in your MCP configAWS_REGIONSet in your MCP configAWS_ENDPOINT_URLSet in your MCP configS3_FORCE_PATH_STYLESet in your MCP configS3_BUCKETSet in your MCP configS3_ENABLED_TOOLGROUPSSet in your MCP configS3_ENABLED_TOOLSSet in your MCP configS3_DISABLED_TOOLSSet in your MCP configSKIP_HEALTH_CHECKSSet in your MCP configInstall with your client
claude mcp add s3 --env AWS_ACCESS_KEY_ID=<YOUR_AWS_ACCESS_KEY_ID> --env AWS_SECRET_ACCESS_KEY=<YOUR_AWS_SECRET_ACCESS_KEY> --env AWS_REGION=<YOUR_AWS_REGION> --env AWS_ENDPOINT_URL=<YOUR_AWS_ENDPOINT_URL> --env S3_FORCE_PATH_STYLE=<YOUR_S3_FORCE_PATH_STYLE> --env S3_BUCKET=<YOUR_S3_BUCKET> --env S3_ENABLED_TOOLGROUPS=<YOUR_S3_ENABLED_TOOLGROUPS> --env S3_ENABLED_TOOLS=<YOUR_S3_ENABLED_TOOLS> --env S3_DISABLED_TOOLS=<YOUR_S3_DISABLED_TOOLS> --env SKIP_HEALTH_CHECKS=<YOUR_SKIP_HEALTH_CHECKS> -- npx -y s3-aws-mcp-server@0.0.5
Run this in a terminal to add the server to Claude Code.
What this does
s3 exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_REGION AWS_ENDPOINT_URL S3_FORCE_PATH_STYLE S3_BUCKET S3_ENABLED_TOOLGROUPS S3_ENABLED_TOOLS S3_DISABLED_TOOLS SKIP_HEALTH_CHECKS
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install s3?
Run the Claude Code command in the install section to add s3 to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with s3?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to s3 as well.
Does s3 need an API key?
Yes. Before it can run, set these environment variables: AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION, AWS_ENDPOINT_URL, S3_FORCE_PATH_STYLE, S3_BUCKET, S3_ENABLED_TOOLGROUPS, S3_ENABLED_TOOLS, S3_DISABLED_TOOLS, SKIP_HEALTH_CHECKS. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
Is this your MCP server?
Claim this listing to see its traffic, fix details yourself, and skip the review queue on future updates.
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