Best Keyword Research Tools for Claude Code in 2026

14 MCP-native SEO tools compared. Find the right one for your workflow.

The MCP ecosystem for SEO tools exploded in late 2025. There are now dozens of keyword research servers that plug directly into Claude Code and Cursor. Some are hosted APIs, some are open-source, some wrap existing data providers. We compared 14 of the most relevant options to help you pick the right tool.

Delulu9

Our Pick

Developer-first keyword research for Claude Code and any terminal

$12 /mo
Google + Bing + Reddit data
Intent categorization
Difficulty scoring
Claude/Cursor templates
REST API + MCP server
1,000 requests/hour
Start 1-Day Free Trial

All Alternatives Compared

Click any tool for a detailed head-to-head comparison with Delulu9.

FetchSERP

Full SEO toolkit with keyword research, SERP analysis, backlinks, and web scraping. Native MCP server.

Freemium

kwrds.ai

Production-ready SEO MCP for keyword research, rankings, and competitor analysis. Enterprise-grade data.

$29-99/mo

Keywords Everywhere

Browser extension turned MCP tool. Search volume, CPC, competition, intent, and backlinks.

Free-$50/mo

DataForSEO

Pay-as-you-go SEO API. Keywords, SERPs, backlinks from 100+ engines. Raw data for builders.

Pay-per-request

SerpApi

Open-source MCP wrapper for real-time SERP scraping. Google, Bing, and more.

~$0.01/query

SEO Review Tools

Live keyword metrics, backlinks, and SERP top 10 analysis. Audit-focused MCP tool.

Pay-per-use

Technical SEO MCP

Claude-native technical audits, site crawling, on-page SEO checks, and content gap analysis.

Freemium

KeywordsPeopleUse

Question-focused keyword mining from Reddit, Quora, and Google. Intent clustering and long-tail ideas.

$9-49/mo

Nightwatch

Rank tracking and SERP feature monitoring for AI agents. Snippets, PAA, and position tracking.

From $29/mo

seo-mcp (cnych GitHub)

Free open-source MCP server powered by Ahrefs data. Self-hostable keyword research for Claude.

Free + Ahrefs

Advanced SEO MCP

On-page audits, internal linking, content optimization, and keyword clustering. Self-hosted.

Free

RankUp MCP

26-tool suite covering keyword research, SERP analysis, content writing, and multi-platform publishing.

Freemium

SEOctopus

Rank tracking, audits, keywords, competitive analysis, and CLI. Self-hosted multi-tool.

Free + data costs

Marketers MCP

Token-optimized DataForSEO wrapper for SERP, keywords, backlinks, and competitive intel.

Free + DataForSEO

Feature Comparison

Tool Reddit Data Intent Hosted Price
Delulu9 Yes Yes Yes $12/mo
FetchSERP No Limited Yes Pay-as-you-go
kwrds.ai No Yes Yes $29-99/mo
Keywords Everywhere No Yes Yes Free-$50/mo
DataForSEO No No Yes Per-request
SerpApi No No Yes ~$0.01/query
Technical SEO MCP No No Yes Freemium
KeywordsPeopleUse Yes Yes Yes $9-49/mo
Nightwatch No No Yes From $29/mo
seo-mcp (cnych) No No Self-host Free + Ahrefs
Advanced SEO MCP No No Self-host Free
RankUp MCP No Basic Self-host Freemium
SEOctopus No No Self-host Free + APIs
Marketers MCP No Via DataForSEO Self-host Free + DataForSEO

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