Is S3 safe and trustworthy?

tashan scores S3 on public evidence — tashan score 41.0/100, it is currently active, note: a single primary maintainer (bus-factor risk), no known advisories against the current release, its declared dependencies reach: cloud. Audit scope: OSV advisories, install-time scripts, build provenance and declared permission surface. We do not review source code or execute the capability.

In Claude Code: run `claude mcp add s3 -- npx -y s3-aws-mcp-server`. In Cursor / Claude Desktop, add it to mcp.json / claude_desktop_config.json.

‹ The Index

S3

npm

MCP server for AWS S3 with fine-grained tool control and S3-compatible endpoint support.

Works with: Claude Code, Cursor, Claude Desktop, Codex CLI, Gemini CLI, Cline, Windsurf, VS Code (installable)
installable: each client documents how to load an MCP server of this type — that is the client's promise, not a claim verified against this capability

Category: Database — see all ranked ›

Install (Claude Code):

claude mcp add s3 -- npx -y s3-aws-mcp-server

thin

“says what it does, not how to use it — 0 tool docs, 0 worked examples; read with 1 linked doc(s)”

This grade is wrong ›

tashan score: 41.0
Instruction depth: 42.0 (thin — shallow — says what it does, not how to actually use it)
Adoption: 66/wk
Upkeep: 52.0
Freshness: 72.0
Evidence coverage: 100% of the inputs this score can use
Health: active
License: MIT

Security audit

Every finding is shown in full — which advisory, the version that fixes it, and the exact command run at install time. Nothing in this audit is behind a licence.

No known advisoriesclearchecked against OSV for 0.0.5 — this package, not its dependency tree

Talks to cloud provider APIsfrom declared dependencies

No build provenanceno attestation — the published artifact cannot be traced to its source

You searched for one. Check the rest of your stack:

npx tashan-cli doctor

Reads the config already on your machine and names what is dead, deprecated or running code at install time. No account, nothing uploaded.

tashan Pro$6/mo

S3 scores 41 today. Pro keeps the series, so you can see whether that is a project getting better or one on its way down.

The whole series behind any row, back to the first day we measured it
The replacement, named — not just the news that something died
tashan doctor over your own config, on your own machine

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Measured this well? Put the live badge in your README — it updates as the score does.

[![tashan](https://tashan.sh/badge/pkg-s3-aws-mcp-server.svg)](https://tashan.sh/capability/pkg-s3-aws-mcp-server.html)

npm ↗ · source ↗ · pkg:s3-aws-mcp-server

Everything on this page is public evidence and free. What it cannot know is whether you run this — check your whole config, free, in the browser. tashan Pro adds the series behind each row and names a replacement for anything dying.

Already running this? Check your whole config — free, in your browser, nothing installed. Or npx tashan-cli doctor locally, which sends nothing at all.

Measured 2026-09-13 · scorer s5 · how · something wrong here?