# SERP Title Width (npm · mcp-server-serp-title-width)

Check if Chinese, Japanese and Korean page titles fit Google results by pixel width, not char count

- Trust score: 63/100 (medium)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- npm · `mcp-server-serp-title-width`: 63/100 (this document), [markdown](https://verifymcp.io/servers/adsandcode-serp-title-width/mcp-server-serp-title-width.md), [page](https://verifymcp.io/servers/adsandcode-serp-title-width/mcp-server-serp-title-width)

## Channel facts

- Registry: `npm`
- Package: `mcp-server-serp-title-width`
- 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**: 81/100
  - No malware found by supply-chain analysis.
  - CVE check failed: a known high-severity CVE affects zod 3.25.76, a direct dependency. A fixed version is available.
  - 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 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 1001 tokens (~500/item across 2 items; 2 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.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 2 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.

**Unverified: 1 category.** A category scored 0 because we could not verify it: 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

### How do I install the SERP Title Width MCP server?

SERP Title Width runs locally as an npm package, launched with npx -y mcp-server-serp-title-width. 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 adsandcode-serp-title-width -- npx -y mcp-server-serp-title-width
```

### Cursor

```json
{
  "mcpServers": {
    "adsandcode-serp-title-width": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-serp-title-width"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "adsandcode-serp-title-width": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-serp-title-width"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add adsandcode-serp-title-width -- npx -y mcp-server-serp-title-width
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "adsandcode-serp-title-width": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "mcp-server-serp-title-width"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add adsandcode-serp-title-width --command npx --arg -y --arg mcp-server-serp-title-width
```

### Hermes

```yaml
mcp_servers:
  adsandcode-serp-title-width:
    command: "npx"
    args: ["-y", "mcp-server-serp-title-width"]
```

### Netclaw

```json
{
  "McpServers": {
    "adsandcode-serp-title-width": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "mcp-server-serp-title-width"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add adsandcode-serp-title-width -t stdio -c npx -a -y mcp-server-serp-title-width
```

### Other

```json
{
  "mcpServers": {
    "adsandcode-serp-title-width": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-serp-title-width"
      ]
    }
  }
}
```

## 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.

### 2026-10-24 (score 63, −5)

- [security regression] CVE-2023-54404 affects this package: high
- [security regression] Known CVEs: pass → fail

### 2026-10-23 (score 68, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-22 (score 53)

First indexed and scored.

## MCP tools (2)

### `measure_titles` (~479 tokens)

Measure page titles by rendered pixel width in Google search results, not by character count, and check them for truncation and title-link problems. Pass every title of a site in one call so boilerplate tails shared across titles are detected. Returns per title: px, full_width_units (px / 22), tier (safe/long/edge/cut), fails, warns; plus boilerplate_tails for the whole set and verdict 'fix' if any title fails. Model: Google search results on google.com with the zh-TW (Traditional Chinese, Taiwan) interface, Chrome on Windows, title font Arial 22px, desktop result column 652px, mobile first line 343px, measured 2026-09-18. Full-width characters (East Asian Width W or F: CJK ideographs, kana, Hangul, full-width punctuation, most emoji) count 22px; printable ASCII uses Arial's own advance widths at 22px; other half-width characters count 12.2px; zero-width characters count 0 and each grapheme cluster (such as an emoji ZWJ sequence) counts once. Kerning is not modelled. Tiers: safe <= 572px, long > 572px (warning), edge > 630px (must fix), cut > 648px (must fix). Japanese and Korean use the same full-width assumption but were not separately measured. Google may rewrite title links, so a passing title is not a guarantee of what is displayed. Fails: tier edge or cut; more than 2 separators (、 or ，) in a title over 572px; more than 1 full-width question mark (？); a trailing phrase after the last 、 or ， shared by more than 2 titles in the same call (boilerplate; a site name after a colon is not counted, as Google suggests that pattern); empty title; the same 2-4 ideograph run 3 or more times (keyword stuffing). Warnings: tier long; more than 2 separators in a title within 572px; text before the first ？：、，wider than the 343px mobile first line.

Input parameters:

- `titles` (array, required): Title strings exactly as they appear in <title>, already decoded ("&" not "&amp;").

### `check_title_files` (~522 tokens)

Read the first <title> element from local .html/.htm files and run the same pixel-width checks as measure_titles across all of them. Each path may be a file (read whatever its extension) or a directory; directories are searched recursively for .html and .htm files, skipping node_modules and names that start with '.', and stop with an error after 20000 files. Only the title in the document head counts; titles in comments, <svg>, <script> and similar are ignored. Reads only, never writes. Character references &amp; &lt; &gt; &quot; &apos; &nbsp; and numeric references are decoded before measuring. Model: Google search results on google.com with the zh-TW (Traditional Chinese, Taiwan) interface, Chrome on Windows, title font Arial 22px, desktop result column 652px, mobile first line 343px, measured 2026-09-18. Full-width characters (East Asian Width W or F: CJK ideographs, kana, Hangul, full-width punctuation, most emoji) count 22px; printable ASCII uses Arial's own advance widths at 22px; other half-width characters count 12.2px; zero-width characters count 0 and each grapheme cluster (such as an emoji ZWJ sequence) counts once. Kerning is not modelled. Tiers: safe <= 572px, long > 572px (warning), edge > 630px (must fix), cut > 648px (must fix). Japanese and Korean use the same full-width assumption but were not separately measured. Google may rewrite title links, so a passing title is not a guarantee of what is displayed. Fails: tier edge or cut; more than 2 separators (、 or ，) in a title over 572px; more than 1 full-width question mark (？); a trailing phrase after the last 、 or ， shared by more than 2 titles in the same call (boilerplate; a site name after a colon is not counted, as Google suggests that pattern); empty title; the same 2-4 ideograph run 3 or more times (keyword stuffing). Warnings: tier long; more than 2 separators in a title within 572px; text before the first ？：、，wider than the 343px mobile first line.

Input parameters:

- `paths` (array, required): Absolute paths to HTML files or directories on this machine, e.g. a static site's build output.

## Diagnostics

Captured diagnostic sections: Provenance, Vulnerabilities, Dependencies. The full working is on the page: https://verifymcp.io/servers/adsandcode-serp-title-width/mcp-server-serp-title-width#diagnostics

## Score history

- 2026-11-05: 63
- 2026-11-04: 63
- 2026-11-03: 63
- 2026-11-02: 63
- 2026-11-01: 63
- 2026-10-31: 63
- 2026-10-30: 63
- 2026-10-29: 63
- 2026-10-28: 63
- 2026-10-27: 63
- 2026-10-26: 63
- 2026-10-25: 63
- 2026-10-24: 63
- 2026-10-23: 68
- 2026-10-22: 53

## Common questions

### What is the SERP Title Width MCP server?

SERP Title Width is an MCP server listed in the public MCP registry as io.github.adsandcode/serp-title-width. Check if Chinese, Japanese and Korean page titles fit Google results by pixel width, not char count. This page covers its npm package (mcp-server-serp-title-width).

### Is the SERP Title Width MCP server safe to use?

SERP Title Width scores 63 out of 100 on VerifyMCP. We recorded 1 known advisory against 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 SERP Title Width MCP server expose?

SERP Title Width exposes 2 tools: measure_titles, check_title_files. Their descriptions and schemas cost roughly 1,001 tokens of context every time the server is loaded.

### Is the SERP Title Width MCP server still maintained?

SERP Title Width 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 SERP Title Width MCP server under?

SERP Title Width 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/mcp-server-serp-title-width
- Socket report: https://socket.dev/npm/package/mcp-server-serp-title-width
- Repository: https://github.com/adsandcode/serp-title-width
- Website: https://adsandcode.com/en/open-source/serp-title-width/
- Changelog RSS feed: https://verifymcp.io/servers/adsandcode-serp-title-width/mcp-server-serp-title-width.xml
- Changelog JSON feed: https://verifymcp.io/servers/adsandcode-serp-title-width/mcp-server-serp-title-width.json
- HTML version of this page: https://verifymcp.io/servers/adsandcode-serp-title-width/mcp-server-serp-title-width