# io.github.infoinlet-marketplace/mcp-s3 (npm · @infoinlet/mcp-s3)

Read-only S3/MinIO/R2 object storage for AI agents — list buckets/objects, metadata, fetch.

- Trust score: 55/100 (low)
- Change this week: −7
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@infoinlet/mcp-s3`: 55/100 (this document), [markdown](https://verifymcp.io/servers/infoinlet-marketplace-mcp-s3/infoinlet-mcp-s3.md), [page](https://verifymcp.io/servers/infoinlet-marketplace-mcp-s3/infoinlet-mcp-s3)

## Channel facts

- Registry: `npm`
- Package: `@infoinlet/mcp-s3`
- Version: `0.1.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (121 of 125), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (121 of 125), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 19/100
  - Repository check failed: the declared repository URL returned HTTP 404.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 64 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 49/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 142 tokens (~35/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add infoinlet-marketplace-mcp-s3 -- npx -y @infoinlet/mcp-s3
```

### Codex

```bash
codex mcp add infoinlet-marketplace-mcp-s3 -- npx -y @infoinlet/mcp-s3
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "infoinlet-marketplace-mcp-s3": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@infoinlet/mcp-s3"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add infoinlet-marketplace-mcp-s3 --command npx --arg -y --arg @infoinlet/mcp-s3
```

### Hermes

```yaml
mcp_servers:
  infoinlet-marketplace-mcp-s3:
    command: "npx"
    args: ["-y", "@infoinlet/mcp-s3"]
```

### Other

```json
{
  "mcpServers": {
    "infoinlet-marketplace-mcp-s3": {
      "command": "npx",
      "args": [
        "-y",
        "@infoinlet/mcp-s3"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-02 (score 55, +55)

- [security regression] Provenance: unverified → fail
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [security improvement] Malware scan: unverified → pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] Stability: unverified → 0.23
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] License: unverified → pass
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Tool coverage: unverified → 100
- [functional] Licence: MIT

### 2026-08-01 (score 0, −22)

- [security] Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified

### 2026-07-31 (score 22, +22)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 0, −40)

- [security regression] Install scripts: pass → unverified
- [security regression] Provenance: fail → unverified
- [security regression] Known CVEs: partial → unverified
- [security regression] Malware scan: pass → unverified
- [functional regression] Maintenance: pass → unverified
- [functional regression] Dependency health: partial → unverified
- [functional regression] License: pass → unverified
- [functional] Licence: MIT

### 2026-07-28 (score 40, −22)

- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-07-27 (score 62)

First indexed and scored.

## MCP tools (4)

### `s3_list_buckets` (~15 tokens)

List all buckets.

### `s3_list_objects` (~41 tokens)

List objects in a bucket under an optional prefix.

Input parameters:

- `bucket` (string, required)
- `limit` (number)
- `prefix` (string)

### `s3_head_object` (~38 tokens)

Object metadata (size, type, last-modified, etag).

Input parameters:

- `bucket` (string, required)
- `key` (string, required)

### `s3_get_object` (~48 tokens)

Fetch the first N bytes of an object as text (default 64KB).

Input parameters:

- `bucket` (string, required)
- `key` (string, required)
- `max_bytes` (number)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/infoinlet-marketplace-mcp-s3/infoinlet-mcp-s3#diagnostics

## Score history

- 2026-08-03: 55
- 2026-08-02: 55
- 2026-08-01: 0
- 2026-07-31: 22
- 2026-07-30: 0
- 2026-07-28: 40
- 2026-07-27: 62

## Links

- npm package: https://www.npmjs.com/package/@infoinlet/mcp-s3
- Socket report: https://socket.dev/npm/package/@infoinlet/mcp-s3
- Changelog RSS feed: https://verifymcp.io/servers/infoinlet-marketplace-mcp-s3/infoinlet-mcp-s3/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/infoinlet-marketplace-mcp-s3/infoinlet-mcp-s3/changelog.json
- HTML version of this page: https://verifymcp.io/servers/infoinlet-marketplace-mcp-s3/infoinlet-mcp-s3