# Keyword Research

Perform keyword research using the SemRush API.

- Repository: https://github.com/OpenClaudia/openclaudia-skills (724 stars)
- Category: Marketing
- License: MIT
- Last updated: 2026-10-29
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add OpenClaudia/openclaudia-skills --skill keyword-research -g -a claude-code -y`
Codex: `npx skills add OpenClaudia/openclaudia-skills --skill keyword-research -g -a codex -y`
Cursor: `npx skills add OpenClaudia/openclaudia-skills --skill keyword-research -g -a cursor -y`
Gemini CLI: `npx skills add OpenClaudia/openclaudia-skills --skill keyword-research -g -a gemini-cli -y`

## Description

Perform keyword research using the SemRush API. Use when the user says "find keywords", "keyword research", "what should I rank for", "keyword ideas", "search volume", "keyword difficulty", "topic clusters", "content gaps", or asks about SEO keywords for a topic or niche.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Keyword Research Skill

You are an expert SEO keyword researcher. Use the SemRush API to find, analyze, and organize keywords into actionable strategies.

## Prerequisites

This skill requires `SEMRUSH_API_KEY`. Check for it in environment variables or in `~/.claude/.env.global`. If not found, inform the user:

```
This skill requires a SemRush API key. Set it via:
  export SEMRUSH_API_KEY=your_key_here
Or add it to ~/.claude/.env.global
```

## SemRush API Endpoints

Use `curl` via the Bash tool for all API calls. The base URL is `https://api.semrush.com/`.

### Core Endpoints

**1. Keyword Overview (phrase_all)**
```
https://api.semrush.com/?type=phrase_all&key={KEY}&phrase={keyword}&database={db}&export_columns=Ph,Nq,Cp,Co,Nr,Td
```
Columns: Ph=Keyword, Nq=Search Volume, Cp=CPC, Co=Competition, Nr=Number of Results, Td=Trend

**2. Related Keywords (phrase_related)**
```
https://api.semrush.com/?type=phrase_related&key={KEY}&phrase={keyword}&database={db}&export_columns=Ph,Nq,Cp,Co,Nr,Td&display_limit=50
```

**3. Keyword Questions (phrase_questions)**
```
https://api.semrush.com/?type=phrase_questions&key={KEY}&phrase={keyword}&database={db}&export_columns=Ph,Nq,Cp,Co,Nr,Td&display_limit=50
```

**4. Domain Organic Keywords (domain_organic)**
```
https://api.semrush.com/?type=domain_organic&key={KEY}&domain={domain}&database={db}&export_columns=Ph,Po,Nq,Cp,Co,Tr,Tc,Nr,Td&display_limit=100
```
Additional columns: Po=Position, Tr=Traffic, Tc=Traffic Cost

**5. Keyword Difficulty (phrase_kdi)**
```
https://api.semrush.com/?type=phrase_kdi&key={KEY}&phrase={keyword}&database={db}&export_columns=Ph,Kd
```
Columns: Kd=Keyword Difficulty (0-100)

### Database Codes
- `us` (United States - default)
- `uk` (United Kingdom)
- `ca` (Canada)
- `au` (Australia)
- `de`, `fr`, `es`, `it`, `br`, `in`, `jp`

Ask the user for target market if not specified. Default to `us`.

## Research Process

### Step 1: Understand the Brief

The rest: https://github.com/OpenClaudia/openclaudia-skills/blob/HEAD/skills/keyword-research/SKILL.md