# Exec Sandbox (oci · docker.io/idconstruct/mcp-exec:v0.5.4)

Single exec tool running caller Python in a network-isolated locked-down sandbox.

- Trust score: 34/100 (low)
- Change this week: −4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- oci · `docker.io/idconstruct/mcp-exec:v0.5.4`: 34/100 (this document), [markdown](https://verifymcp.io/servers/inhuman-mcp-exec/docker-io-idconstruct-mcp-exec-v0-5-4.md), [page](https://verifymcp.io/servers/inhuman-mcp-exec/docker-io-idconstruct-mcp-exec-v0-5-4)

## Channel facts

- Registry: `oci`
- Package: `docker.io/idconstruct/mcp-exec:v0.5.4`
- 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**: 0/100
  - Malware scan not yet available for this package.
  - CVE data not yet available for this package.
  - Install-script risk not yet assessed.
  - Dependency-health data not yet available.
- **Provenance & Transparency**: 32/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: no license is declared.
  - Actively maintained (last published 13 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 63/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 387 tokens (~387/item across 1 items; 1 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 2 categories.** Categories scored 0 because we could not verify them: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### Claude

```bash
claude mcp add inhuman-mcp-exec -- docker run --rm -i docker.io/idconstruct/mcp-exec:v0.5.4
```

### Codex

```bash
codex mcp add inhuman-mcp-exec -- docker run --rm -i docker.io/idconstruct/mcp-exec:v0.5.4
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "inhuman-mcp-exec": {
      "type": "local",
      "command": [
        "docker",
        "run",
        "--rm",
        "-i",
        "docker.io/idconstruct/mcp-exec:v0.5.4"
      ],
      "enabled": true
    }
  }
}
```

### Hermes

```yaml
mcp_servers:
  inhuman-mcp-exec:
    command: "docker"
    args: ["run", "--rm", "-i", "docker.io/idconstruct/mcp-exec:v0.5.4"]
```

### Other

```json
{
  "mcpServers": {
    "inhuman-mcp-exec": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "docker.io/idconstruct/mcp-exec:v0.5.4"
      ]
    }
  }
}
```

## 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.

### 2026-07-31 (score 34, −4)

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

### 2026-07-27 (score 38, +30)

- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: excellent
- [functional] First check of Schema quality: fail
- [functional] First check of Tool coverage: 100
- [functional] First check of Tool coverage: 100

### 2026-07-26 (score 8)

First indexed and scored.

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

## MCP tools (1)

### `exec` (~387 tokens)

Execute Python code in a network-isolated sandbox and return its output.
Environment: Python 3 with stdlib plus PyYAML and Jinja2.
Limits: no network; wall-clock timeout defaults to 30s (max 300s); combined stdout+stderr is capped at 1048576 bytes then truncated; stdin is capped at 1048576 bytes.
A non-zero exit_code or timed_out=true is a NORMAL result, not a tool error.

INPUT CONTRACT — follow exactly:
• `code`: Python source as a single string, newlines as \n. Top-level statements MUST start at column 0 — NO leading spaces/tabs. Indent ONLY bodies of blocks (after a line ending with ':'). Wrong: "import json\n d=json.load(...)" (leading space → IndentationError). Right: "import json\nd=json.load(...)".
• `stdin`: a STRING piped to the program's stdin (read it with sys.stdin). To pass JSON, pass it AS a string — do not pass a parsed object/map.
• Read input from sys.stdin, print results to stdout.

Example: code="import json,sys\nd=json.load(sys.stdin)\nprint(len(d['items']))", stdin="{\"items\":[1,2,3]}"  → stdout "3".

Input parameters:

- `code` (string, required): Python source as one string (\n for newlines). Top-level statements MUST start at column 0 (no leading spaces); indent only block bodies after a line ending in ':'. Read sys.stdin, print to stdout.
- `stdin` (string): STRING piped to the program's stdin (max 1 MiB). To pass JSON, pass it as a string — not a parsed object.
- `timeout_s` (integer): wall-clock timeout in seconds (default 30, clamped to [1,300])

Output parameters:

- `duration_ms` (integer)
- `exit_code` (integer)
- `stderr` (string)
- `stdout` (string)
- `timed_out` (boolean)
- `truncated` (boolean)

## Diagnostics

Captured diagnostic sections: Provenance. The full working is on the page: https://verifymcp.io/servers/inhuman-mcp-exec/docker-io-idconstruct-mcp-exec-v0-5-4#diagnostics

## Score history

- 2026-08-03: 34
- 2026-08-02: 34
- 2026-08-01: 34
- 2026-07-31: 34
- 2026-07-30: 38
- 2026-07-29: 38
- 2026-07-28: 38
- 2026-07-27: 38
- 2026-07-26: 8

## Links

- Repository: https://github.com/inhuman/mcp-exec
- Changelog RSS feed: https://verifymcp.io/servers/inhuman-mcp-exec/docker-io-idconstruct-mcp-exec-v0-5-4/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/inhuman-mcp-exec/docker-io-idconstruct-mcp-exec-v0-5-4/changelog.json
- HTML version of this page: https://verifymcp.io/servers/inhuman-mcp-exec/docker-io-idconstruct-mcp-exec-v0-5-4