How do I install Cygnix SEO?

Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Cygnix SEO need an API key?

No required environment variable is listed on this record.

What transport does Cygnix SEO use?

Cygnix SEO runs locally over stdio.

When was Cygnix SEO last checked?

Last checked 2026-11-09. No-API-key SEO tools: keyword clustering, search intent, cannibalization, meta checks, briefs.

Cygnix SEO MCP server

Power your agent

Add this server

The publisher's own command. Not a PlugMCP endpoint.

Add to Cursor Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Local command

npx -y [email protected]

Claude Code has no install link for a local command. Copy the command below and run it in a terminal.

shClaude Code

1claude mcp add io.github.cygnixlabs-cmd-cygnix-seo-mcp -- npx -y cygnix-seo-mcp@1.0.0

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "io.github.cygnixlabs-cmd-cygnix-seo-mcp": {4      "command": "npx",5      "args": [6        "-y",7        "[email protected]"8      ]9    }10  }11}

claude_desktop_config.json

Local · npmPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Local

Transport: stdio
Version: 1.0.0
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

Cygnix SEO MCP: free SEO tools for Claude, Cursor & any MCP client

5 no-API-key SEO tools that work on your data: paste keywords, a Google Search Console export or your titles, and get clusters, intent, cannibalization fixes, CTR checks and content briefs. Everything is deterministic and runs locally. No accounts, no tracking, and no made-up search volumes.

Built by Cygnix Labs.

Tool	What it does
`cluster_keywords`	Groups a keyword list into topical clusters and picks a pillar keyword per cluster (one cluster ≈ one page)
`classify_search_intent`	Labels keywords informational / commercial / transactional / navigational, with the matching signal
`find_keyword_cannibalization`	Reads GSC CSV (Query + Page) and flags queries where your own pages compete, ranked HIGH/MEDIUM/LOW, with a fix
`check_title_meta`	Scores title tags and meta descriptions (0–100): char + pixel truncation, keyword placement, CTR hooks
`content_brief_outline`	Builds a brief from your keyword: intent, title options, meta draft, slug, H2 outline, questions to answer, on-page checklist

Install

Requires Node.js 18+.

Claude Desktop

Edit claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\):

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

Restart Claude Desktop.

Cursor

Settings → MCP → Add new server, or add to ~/.cursor/mcp.json (or .cursor/mcp.json in a project):

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

Claude Code

claude mcp add cygnix-seo -- npx -y cygnix-seo-mcp

Other clients (VS Code, Windsurf, Cline, Zed…)

Any MCP client that supports stdio: command npx, args -y cygnix-seo-mcp.

From source

git clone https://github.com/cygnixlabs-cmd/cygnix-seo-mcp && cd cygnix-seo-mcp
npm install && npm test
node dist/index.js

Example prompts

"Cluster these 80 keywords and tell me which page each cluster should target:" (paste list)
"Classify the search intent of these keywords and flag the commercial ones."
"Here is my GSC export (query + page). Find keyword cannibalization and tell me what to merge."
"Check the titles and meta descriptions for these 10 URLs against their target keywords."
"Write a content brief for 'technical seo audit' using these related keywords: …"

Example output (cannibalization)

## [HIGH] "seo audit checklist" (2 pages, #2 page share 38%)
| Page | Clicks | Impr | Avg pos |
| https://site.com/a | 30 | 1000 | 4.2 |
| https://site.com/b | 5 | 600 | 9.1 |
Action: Pick https://site.com/a as canonical target; merge/301 or de-optimize the others...

Getting GSC data: Search Console → Performance → Search results → add the Page dimension alongside Query (or use the Looker Studio / API export) → Export CSV → paste the text.

More Cygnix SEO tools

Free agent skills (npx skills add cygnixlabs-cmd/cygnix-seo-skills), pay-per-use Apify actors for full-site SEO + AEO/GEO audits, and the rest of the toolkit: Cygnix Labs tool directory.

Honest limits

Intent and clustering are rule-based/lexical, so treat them as a fast first pass and confirm with the live SERP.
Title pixel widths are approximations of Google's SERP rendering.
No tool estimates search volume or difficulty. Use your own data source for that.

Paid pro tools

Need more than the free tools? These run in the cloud on Apify. You pay per result, and Claude, ChatGPT and Cursor agents can call them through the Apify MCP server:

Tool	What it does	Price
AEO & AI Search Readiness Checker	Scores pages 0-100 for ChatGPT, Perplexity and AI Overviews: schema, answer-first content, FAQ, llms.txt, GPTBot/ClaudeBot access	5 pages/run free, then $2 / 1,000 pages
SERP Intent Mapper	Search intent + page type for every keyword	100 keywords/run free, then $0.50 / 1,000
Keyword Clusterer + Content Brief	Topic clusters, pillar keywords, content briefs	100 keywords/run free, then $0.70 / 1,000 + $0.01 / brief
Keyword Cannibalization Finder	Pages competing for the same query, from a GSC export	3 issues/run free, then $0.007 / issue
Content Decay Audit	Pages losing Google traffic, ranked by clicks lost, with refresh plans	25 pages/run free, then $1 / 1,000 pages

Full agent skills (Claude Code / Cursor SKILL.md packs): Cygnix Labs on Agensi

Want the full workflow?

These tools are the free starter layer of the Cygnix SEO Toolkit: full agent skills, prompts and sheets for keyword research → briefs → audits → content refresh.

🔎 SEO Toolkit Vol. 1: Keyword Research → Content Refresh (Agensi)
🛠️ SEO Toolkit Vol. 2: Audit & Fix Pack (Agensi)
📦 SEO Operator Bundle (Gumroad)
👤 All Cygnix Labs skills on Agensi · Gumroad store · Medium · X

Keywords

MCP server, Model Context Protocol, SEO MCP, keyword research, keyword clustering, search intent classifier, keyword cannibalization, Google Search Console, title tag checker, meta description length, CTR optimization, content brief generator, Claude SEO, Cursor SEO, AI SEO tools, free SEO tools, no API key.

Cygnix SEO

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install Cygnix SEO?

Does Cygnix SEO need an API key?

What transport does Cygnix SEO use?

When was Cygnix SEO last checked?

Documentation

Cygnix SEO MCP: free SEO tools for Claude, Cursor & any MCP client

Install

Claude Desktop

Cursor

Claude Code

Other clients (VS Code, Windsurf, Cline, Zed…)

From source

Example prompts

Example output (cannibalization)

More Cygnix SEO tools

Honest limits

Paid pro tools

Want the full workflow?

Keywords

License