Semust API
Semust API provides search and keyword data as part of Semust, an AI-powered marketing and SEO platform.
What Semust API is
Semust API provides search and keyword data as part of Semust, an AI-powered marketing and SEO platform. Its SERP API returns real-time Google results such as organic listings, ads, People Also Ask, AI Overview, images, and Knowledge Panel data. The Keyword Research API returns search volume, keyword difficulty, CPC, search intent, and related suggestions through one endpoint. Example API requests use HTTP headers for authentication, and the API format is REST. The broader platform lists rank tracking, technical SEO checks, backlink analysis, AI content generation, internal linking, and reporting. Listed connections include Google Search Console, Google Ads, Google Analytics, Meta Ads, WordPress, Bing Webmaster, and Yandex Metrica. A free Chrome extension can show page outlines, check link status codes, and inspect JSON-LD. The free offering is a 14-day trial without a credit card, with limited credits and one project.
Good
- SERP API returns multiple types of Google result data
- Keyword API includes volume, difficulty, CPC, and intent
- REST API with header authentication
- Free trial requires no credit card
- Chrome extension inspects page outlines and JSON-LD
Watch out
- Free trial lasts 14 days
- Technical SEO scans capped at 20,000 URLs on paid plans
- Plan-specific limits apply to credits, projects, and tracking
Who it suits
Semust suits people focused on organic search, including content creators, who need keyword and search-result data alongside broader SEO tools. API users can work with the REST format and the documented header authentication.
Verdict
Semust API combines SERP and keyword endpoints with a wider set of SEO tools and integrations. Review the trial and plan limits to see whether their available credits and projects fit your work.
Plans and prices
From Semust API's own pricing page, checked 5 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| 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 |
| Starter | $19 a month | 1750 AI Credits/month · 100 Keyword Search/month · 250 Rank Tracking · 5 Project · Billed monthly |
| Business | $35 a month | 3250 AI Credits/month · 250 Keyword Search/month · 500 Rank Tracking · 10 Project · 1 Team Seats · Billed monthly |
| Enterprise | $59 a month | 5400 AI Credits/month · 500 Keyword Search/month · 1000 Rank Tracking · 40 Project · 3 Team Seats · Billed monthly |
| Scale | $129 a month | 18k AI Credits/month · 1250 Keyword Search/month · 2000 Rank Tracking · 100 Project · 5 Team Seats · Billed monthly |
The facts
Each one read from Semust API's own pages, with the date it was checked.
What it does
- API authentication
- The SERP API example authenticates requests with SEMUST-API-USER and SEMUST-API-PASSWORD HTTP headers.checked 5 Oct 2026
- Chrome extension
- The free Semust SEO Toolbar extension can show a page outline, check HTTP status codes for links, and inspect JSON-LD data.checked 5 Oct 2026
- Founder
- The About page identifies Ramazan Umutlu as the founder and says he has more than 10 years of full-time SEO experience.checked 5 Oct 2026
- Integrations
- The maker lists Google Search Console, Google Ads, Google Analytics, Meta Ads, WordPress, Bing Webmaster, and Yandex Metrica integrations or connections.checked 5 Oct 2026
- Keyword API
- The Keyword Research API provides search volume, keyword difficulty, CPC, search intent, and related keyword suggestions through one endpoint.checked 5 Oct 2026
- Location
- The site footer says Semust is made in Türkiye.checked 5 Oct 2026
- Product
- Semust describes itself as an AI-powered marketing and SEO platform for keyword research, content management, and digital marketing.checked 5 Oct 2026
- SEO tools
- The platform lists rank tracking, technical SEO checks, keyword research, backlink analysis, AI content generation, internal linking, and reporting among its tools.checked 5 Oct 2026
- 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.checked 5 Oct 2026
- 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.checked 5 Oct 2026
Money
- 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.checked 5 Oct 2026
- Trial
- The Free plan is presented as a 14-day free trial and requires no credit card.checked 5 Oct 2026
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