Python module to download objects in an S3 bucket.
Most file and storage access work still happens through a UI a human drives. S3 MCP server moves it into the conversation instead. Python module to download objects in an S3 bucket.
Styling conventions: PEP 8
The server publishes 2 tools. What each one is for:
Installation — The Installation tool exposed by this serverUsage — The Usage tool exposed by this serverConfiguration is passed through the environment: AWS_DEFAULT_REGION, AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
The server ships on PyPI as s3-downloader, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
This sits in the file and storage access group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. S3's toolset — Installation, Usage — is a fair guide to whether it matches your workflow.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| Installation | The Installation tool exposed by this server. |
| Usage | The Usage tool exposed by this server. |
{
"mcpServers": {
"s3-downloader": {
"command": "uvx",
"args": ["s3-downloader"],
"env": {
"AWS_DEFAULT_REGION": "your-value",
"AWS_ACCESS_KEY_ID": "your-value",
"AWS_SECRET_ACCESS_KEY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| AWS_DEFAULT_REGION | Configuration value read at startup. | Optional |
| AWS_ACCESS_KEY_ID | Credential the server authenticates with. | Yes |
| AWS_SECRET_ACCESS_KEY | Credential the server authenticates with. | Yes |
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