# Facet (npm · @chandra14/facet-check)

Check web pages for responsive design problems and screenshot them on phone, tablet and desktop.

- Trust score: 79/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- npm · `@chandra14/facet-check`: 79/100 (this document), [markdown](https://verifymcp.io/servers/chndr-prksh-facet/chandra14-facet-check.md), [page](https://verifymcp.io/servers/chndr-prksh-facet/chandra14-facet-check)

## Channel facts

- Registry: `npm`
- Package: `@chandra14/facet-check`
- Version: `0.1.0`
- 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 2026-11-05.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 30 of 94 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 21 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 73/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 723 tokens (~144/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 70/100
  - Stability observed for 21 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 97/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 92% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Facet MCP server?

Facet runs locally as an npm package, launched with npx -y @chandra14/facet-check. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add chndr-prksh-facet -- npx -y @chandra14/facet-check
```

### Cursor

```json
{
  "mcpServers": {
    "chndr-prksh-facet": {
      "command": "npx",
      "args": [
        "-y",
        "@chandra14/facet-check"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "chndr-prksh-facet": {
      "command": "npx",
      "args": [
        "-y",
        "@chandra14/facet-check"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add chndr-prksh-facet -- npx -y @chandra14/facet-check
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "chndr-prksh-facet": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@chandra14/facet-check"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add chndr-prksh-facet --command npx --arg -y --arg @chandra14/facet-check
```

### Hermes

```yaml
mcp_servers:
  chndr-prksh-facet:
    command: "npx"
    args: ["-y", "@chandra14/facet-check"]
```

### Netclaw

```json
{
  "McpServers": {
    "chndr-prksh-facet": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@chandra14/facet-check"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add chndr-prksh-facet -t stdio -c npx -a -y @chandra14/facet-check
```

### Other

```json
{
  "mcpServers": {
    "chndr-prksh-facet": {
      "command": "npx",
      "args": [
        "-y",
        "@chandra14/facet-check"
      ]
    }
  }
}
```

## 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.

### 2026-11-04 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-27 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-23 (score 73, +4)

- [functional improvement] Stability: unverified → 0.27

### 2026-10-15 (score 69, +31)

- [security improvement] Injection markers: unverified → pass
- [security] First check of Judged manipulation: pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: excellent
- [functional] First check of Destructive annotations: pass
- [functional] First check of Tool coverage: 92
- [functional] First check of Schema quality: fail

## MCP tools (5)

### `check_responsive` (~229 tokens)

Check a web page for responsive design problems on real phone, tablet, laptop and desktop viewports (with each device's pixel ratio, touch support and user agent). Returns the problems found on each device: horizontal scrolling and the elements causing it, tap targets under 24px, text under 12px, form fields that make iOS zoom, viewport meta mistakes, clipped text, oversized or blurry images, fixed headers covering the screen, plus console errors per device. Defaults to the six most common screen sizes. Works with localhost. Use it after changing layout or CSS, or when asked whether a site is mobile friendly.

Input parameters:

- `devices` (array): Device ids or names from list_devices ("iphone-17", "Galaxy S26"), free-form sizes ("1024x768"), or a preset: default, popular, phones, latest, tablets, desktops, apple, foldables, extremes.
- `url` (string, required): Page to load: a full URL, a bare host such as example.com, localhost:3000 for a local dev server, or a path to an HTML file

### `screenshot` (~173 tokens)

Screenshot a web page on several devices at once to see how its layout responds. Returns one labelled image per device. Defaults to a phone, a tablet and a laptop. Set fullPage to capture the whole page (cut off at 6000px).

Input parameters:

- `devices` (array): Device ids or names from list_devices ("iphone-17", "Galaxy S26"), free-form sizes ("1024x768"), or a preset: default, popular, phones, latest, tablets, desktops, apple, foldables, extremes.
- `fullPage` (boolean): Capture the whole scrollable page, not only the first screen
- `url` (string, required): Page to load: a full URL, a bare host such as example.com, localhost:3000 for a local dev server, or a path to an HTML file

### `audit_accessibility` (~100 tokens)

Run an axe-core accessibility audit of a web page on one device and return the WCAG violations with their impact, the affected elements and how to fix them.

Input parameters:

- `device` (string): Device id, name or size; defaults to an iPhone
- `url` (string, required): Page to load: a full URL, a bare host such as example.com, localhost:3000 for a local dev server, or a path to an HTML file

### `compare_element` (~150 tokens)

Measure one element of a page on every device: size, position, visibility, font size, display, flex and grid settings. Shows how a component changes across breakpoints.

Input parameters:

- `devices` (array): Device ids or names from list_devices ("iphone-17", "Galaxy S26"), free-form sizes ("1024x768"), or a preset: default, popular, phones, latest, tablets, desktops, apple, foldables, extremes.
- `selector` (string, required): CSS selector of the element
- `url` (string, required): Page to load: a full URL, a bare host such as example.com, localhost:3000 for a local dev server, or a path to an HTML file

### `list_devices` (~71 tokens)

List the 290+ device profiles (phones, foldables, tablets, laptops, desktops, watches, TVs) with viewport size and pixel ratio, and the named presets.

Input parameters:

- `kind` (string)
- `query` (string): Filter by name, e.g. "iphone" or "galaxy"

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/chndr-prksh-facet/chandra14-facet-check#diagnostics

## Score history

- 2026-11-05: 79
- 2026-11-04: 79
- 2026-11-03: 78
- 2026-11-02: 78
- 2026-11-01: 77
- 2026-10-31: 77
- 2026-10-30: 76
- 2026-10-29: 76
- 2026-10-28: 75
- 2026-10-27: 75
- 2026-10-26: 74
- 2026-10-25: 74
- 2026-10-24: 74
- 2026-10-23: 73
- 2026-10-22: 69
- 2026-10-21: 69
- 2026-10-20: 69
- 2026-10-19: 69
- 2026-10-18: 69
- 2026-10-17: 69
- 2026-10-16: 69
- 2026-10-15: 69
- 2026-10-14: 38

## Common questions

### What is the Facet MCP server?

Facet is an MCP server listed in the public MCP registry as io.github.chndr-prksh/facet. Check web pages for responsive design problems and screenshot them on phone, tablet and desktop. This page covers its npm package (@chandra14/facet-check).

### Is the Facet MCP server safe to use?

Facet scores 79 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Facet MCP server expose?

Facet exposes 5 tools: check_responsive, screenshot, audit_accessibility, compare_element, list_devices. Their descriptions and schemas cost roughly 723 tokens of context every time the server is loaded.

### Is the Facet MCP server still maintained?

Facet is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Facet MCP server under?

Facet declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@chandra14/facet-check
- Socket report: https://socket.dev/npm/package/@chandra14/facet-check
- Repository: https://github.com/chndr-prksh/facet
- Website: https://chndr-prksh.github.io/facet/
- Changelog RSS feed: https://verifymcp.io/servers/chndr-prksh-facet/chandra14-facet-check.xml
- Changelog JSON feed: https://verifymcp.io/servers/chndr-prksh-facet/chandra14-facet-check.json
- HTML version of this page: https://verifymcp.io/servers/chndr-prksh-facet/chandra14-facet-check