semrush-cli

A command-line interface for SEMrush, a service that provides data about keywords, websites, search traffic, and backlinks. It uses a local command named semrush and requires a SEMrush API key.

In plain words
What is it for?
Use it to research keywords, inspect a domain, study backlinks and traffic, and compare competitors, with text or JSON output.
Why use it?
It lets developers request research and domain data from the terminal instead of working through a separate web interface.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/mrkooblu/semrush-mcp/semrush-cli
Any agent
npx skills add mrkooblu/semrush-mcp --skill semrush-cli
Clone the repo
git clone --depth 1 https://github.com/mrkooblu/semrush-mcp

Made for: Claude Code, Codex.

Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,818 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00025 $0.01818
Opus 5 $0.00013 $0.00909
Sonnet 5 $0.00005 $0.00364
Haiku 4.5 $0.00003 $0.00182

Measured 3d ago against content hash 5ff5a46b2ada, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

semrush-cli scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/semrush-cli/SKILL.md · 253 lines

How it starts

The opening of the file, as written. The whole thing — 253 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEMrush CLI (Local)

Fast keyword research, domain analytics, backlinks, traffic analysis, and competitive intelligence using the locally installed semrush CLI. This CLI is built from the unified semrush-mcp repo and shares the same API client as the MCP server.

Arguments

$ARGUMENTS

  • A keyword, domain, or command to run (e.g., "seo tools", "example.com", "kw seo --related")
  • If blank, will prompt for a target

Prerequisites

The CLI is installed globally from the semrush-mcp repo. Verify it's available:

semrush --version

Ensure SEMRUSH_API_KEY is set in your environment or .env file.

Available Commands

1. Quick Overview

Auto-detects whether the target is a keyword or domain and returns the appropriate overview.

semrush q "seo tools"           # Keyword overview
semrush q example.com           # Domain overview
semrush quick "content marketing" -d uk  # Specify database

Options:

  • -d, --database <db>: Country database code (default: us)
  • -f, --format <fmt>: Output format — text or json (default: text)

2. Keyword Research

In-depth keyword analysis with multiple sub-commands.

# Basic keyword overview
semrush kw "content marketing"

# Related keywords
semrush kw "seo" --related -l 20

# Question-based keywords
semrush kw "marketing" --questions -l 10

# Broad match keywords
semrush kw "email marketing" --broad -l 15

# SERP organic results (who ranks for this keyword)
semrush kw "seo tools" --organic -l 10

# SERP paid results
semrush kw "ppc software" --paid -l 10

Options:

  • --related: Get related keywords
  • --questions: Get question-based keyword variations
  • --broad: Get broad match keywords
  • --organic: Get organic SERP results for the keyword
  • --paid: Get paid SERP results for the keyword
  • -d, --database <db>: Country database code (default: us)
  • -l, --limit <n>: Number of results to return
  • -f, --format <fmt>: Output format — text or json (default: text)

3. Batch Keyword Difficulty

Analyze difficulty scores for multiple keywords at once.

Read the full file on GitHub · 253 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 253 lines · 25 tokens per session scan A 5ff5a46b2ada

Subscribe to this mod's changes

semrush-cli is a skill published in the GitHub repository mrkooblu/semrush-mcp (39 stars, last pushed 5mo ago), licensed MIT. It adds 25 tokens to every session and 1,818 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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