Semust API

Web · API · Extension · paid plans from $19/mo

Freedom report

One barScore 4.8

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedThinly documented

Semust API is ranked #17 of 21 in SEO testing software on Freedom251. It runs on API, Browser extension, Web. There is a free plan. A free trial is offered. Paid plans start at $19/mo.

Semust API plans and pricing

All plans

Free Free 100 AI Credits/14 days · 15 Keyword Search/14 days · 15 Backlink Analysis/14 days · 15 SERP Analysis/14 days · 15 Competitor Analysis Credits/14 days · 10 Rank Tracking · 1 Project semust.com · 5 Oct 2026

Starter $19/mo Billed monthly 1750 AI Credits/month · 100 Keyword Search/month · 250 Rank Tracking · 5 Project semust.com · 5 Oct 2026

Business $35/mo Billed monthly 3250 AI Credits/month · 250 Keyword Search/month · 500 Rank Tracking · 10 Project · 1 Team Seats semust.com · 5 Oct 2026

Enterprise $59/mo Billed monthly 5400 AI Credits/month · 500 Keyword Search/month · 1000 Rank Tracking · 40 Project · 3 Team Seats semust.com · 5 Oct 2026

Scale $129/mo Billed monthly 18k AI Credits/month · 1250 Keyword Search/month · 2000 Rank Tracking · 100 Project · 5 Team Seats semust.com · 5 Oct 2026

Compared on SEO testing software

Free plan: No
Rankings data: Yes
Backlink data: Yes
Keyword data: Yes
Domain data: Yes
Historical data: Yes
API format: rest

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The record

Product: Semust describes itself as an AI-powered marketing and SEO platform for keyword research, content management, and digital marketing.
SERP API: Its SERP API returns real-time Google search result data, including organic results, ads, People Also Ask, AI Overview, images, and Knowledge Panel data.
Keyword API: The Keyword Research API provides search volume, keyword difficulty, CPC, search intent, and related keyword suggestions through one endpoint.
SEO tools: The platform lists rank tracking, technical SEO checks, keyword research, backlink analysis, AI content generation, internal linking, and reporting among its tools.
Integrations: The maker lists Google Search Console, Google Ads, Google Analytics, Meta Ads, WordPress, Bing Webmaster, and Yandex Metrica integrations or connections.
Chrome extension: The free Semust SEO Toolbar extension can show a page outline, check HTTP status codes for links, and inspect JSON-LD data.
Trial: The Free plan is presented as a 14-day free trial and requires no credit card.
Plan limits: The pricing page caps technical SEO scans at 20,000 URLs on the paid plans and shows plan-specific limits for projects, tracking credits, AI credits, and reports.
Who it serves: Semust says it is built for people seeking to grow income through organic search and describes the platform as supporting content creators.
Founder: The About page identifies Ramazan Umutlu as the founder and says he has more than 10 years of full-time SEO experience.
Location: The site footer says Semust is made in Türkiye.
API authentication: The SERP API example authenticates requests with SEMUST-API-USER and SEMUST-API-PASSWORD HTTP headers.
Price from: $19/mo

Where it ranks on Freedom251

Best SEO Testing Software in 2026#17 of 21

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Sources

semust.com/en· checked 5 Oct 2026
semust.com/en/api-platform/serp-api· checked 5 Oct 2026
semust.com/en/api-platform/keyword-research-api· checked 5 Oct 2026
semust.com/en/free-seo-tools/seo-toolbar· checked 5 Oct 2026
semust.com/en/pricing· checked 5 Oct 2026
semust.com/en/about· checked 5 Oct 2026