# Cygnix SEO (npm · cygnix-seo-mcp)

No-API-key SEO tools: keyword clustering, search intent, cannibalization, meta checks, briefs.

- Trust score: 66/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- npm · `cygnix-seo-mcp`: 66/100 (this document), [markdown](https://verifymcp.io/servers/cygnixlabs-cmd-cygnix-seo-mcp/cygnix-seo-mcp.md), [page](https://verifymcp.io/servers/cygnixlabs-cmd-cygnix-seo-mcp/cygnix-seo-mcp)

## Channel facts

- Registry: `npm`
- Package: `cygnix-seo-mcp`
- Version: `1.0.0`
- 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 2026-10-18.

- **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.
  - 31 of 93 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 3 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 61/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 295 tokens (~59/item across 5 items; 5 tools + 0 resources), lean.
  - 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**: 77/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 30% 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.

**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 Cygnix SEO MCP server?

Cygnix SEO runs locally as an npm package, launched with npx -y cygnix-seo-mcp. 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 cygnixlabs-cmd-cygnix-seo-mcp -- npx -y cygnix-seo-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "cygnixlabs-cmd-cygnix-seo-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "cygnix-seo-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "cygnixlabs-cmd-cygnix-seo-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "cygnix-seo-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add cygnixlabs-cmd-cygnix-seo-mcp -- npx -y cygnix-seo-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cygnixlabs-cmd-cygnix-seo-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "cygnix-seo-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add cygnixlabs-cmd-cygnix-seo-mcp --command npx --arg -y --arg cygnix-seo-mcp
```

### Hermes

```yaml
mcp_servers:
  cygnixlabs-cmd-cygnix-seo-mcp:
    command: "npx"
    args: ["-y", "cygnix-seo-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "cygnixlabs-cmd-cygnix-seo-mcp": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "cygnix-seo-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add cygnixlabs-cmd-cygnix-seo-mcp -t stdio -c npx -a -y cygnix-seo-mcp
```

### Other

```json
{
  "mcpServers": {
    "cygnixlabs-cmd-cygnix-seo-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "cygnix-seo-mcp"
      ]
    }
  }
}
```

## 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.

### 2026-10-15 (score 66, +28)

- [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: fair
- [functional] First check of Destructive annotations: pass
- [functional] First check of Tool coverage: 30
- [functional] First check of Schema quality: pass

### 2026-10-14 (score 38)

First indexed and scored.

## MCP tools (5)

### `cluster_keywords` (~62 tokens)

Group a pasted keyword list (newline/comma separated) into topical clusters with a suggested pillar keyword per cluster. Deterministic; no search volumes.

Input parameters:

- `keywords` (string, required): Keywords, one per line or comma separated
- `min_shared_terms` (integer)

### `classify_search_intent` (~41 tokens)

Classify keywords as informational, commercial, transactional or navigational using modifier rules.

Input parameters:

- `keywords` (string, required): Keywords, one per line or comma separated

### `find_keyword_cannibalization` (~75 tokens)

Find queries where 2+ of your pages compete, from a Google Search Console export (CSV/TSV text with Query and Page columns; clicks, impressions, position optional).

Input parameters:

- `gsc_csv` (string, required): Pasted GSC CSV text including header row
- `min_impressions` (integer)

### `check_title_meta` (~45 tokens)

Check title tags and meta descriptions for length/pixel truncation, keyword placement and CTR hooks. Returns a 0-100 score with fixes.

Input parameters:

- `items` (array, required)

### `content_brief_outline` (~72 tokens)

Generate a content brief (intent, title options, meta draft, H2 outline, questions, on-page checklist) for a target keyword plus optional related keywords.

Input parameters:

- `audience` (string)
- `keyword` (string, required)
- `related_keywords` (string)
- `word_count` (integer)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/cygnixlabs-cmd-cygnix-seo-mcp/cygnix-seo-mcp#diagnostics

## Score history

- 2026-10-18: 66
- 2026-10-17: 66
- 2026-10-16: 66
- 2026-10-15: 66
- 2026-10-14: 38

## Common questions

### What is the Cygnix SEO MCP server?

Cygnix SEO is an MCP server listed in the public MCP registry as io.github.cygnixlabs-cmd/cygnix-seo-mcp. No-API-key SEO tools: keyword clustering, search intent, cannibalization, meta checks, briefs. This page covers its npm package (cygnix-seo-mcp).

### Is the Cygnix SEO MCP server safe to use?

Cygnix SEO scores 66 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 18 October 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 Cygnix SEO MCP server expose?

Cygnix SEO exposes 5 tools: cluster_keywords, classify_search_intent, find_keyword_cannibalization, check_title_meta, content_brief_outline. Their descriptions and schemas cost roughly 295 tokens of context every time the server is loaded.

### Is the Cygnix SEO MCP server still maintained?

Cygnix SEO is still listed as active in the MCP registry. We last reached this channel on 18 October 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 Cygnix SEO MCP server under?

Cygnix SEO 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/cygnix-seo-mcp
- Socket report: https://socket.dev/npm/package/cygnix-seo-mcp
- Repository: https://github.com/cygnixlabs-cmd/cygnix-seo-mcp
- Website: https://cygnixlabs.com/
- Changelog RSS feed: https://verifymcp.io/servers/cygnixlabs-cmd-cygnix-seo-mcp/cygnix-seo-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/cygnixlabs-cmd-cygnix-seo-mcp/cygnix-seo-mcp.json
- HTML version of this page: https://verifymcp.io/servers/cygnixlabs-cmd-cygnix-seo-mcp/cygnix-seo-mcp