What is Semust API?
Semust API provides programmatic access to comprehensive SEO data, including search engine results pages (SERP) and keyword metrics. Build powerful SEO tools, track rankings, and analyze keyword opportunities with our reliable API.SERP Data
Get real-time search engine results including organic listings, knowledge panels, and AI overviews.
Fast & Reliable
High-performance infrastructure designed for speed and reliability at scale.
Developer Friendly
Clean JSON responses, comprehensive documentation, and code examples in multiple languages.
Secure Access
API key authentication with granular access control and usage monitoring.
Available APIs
SERP API
Returns Google search engine results page data including organic results, knowledge panels, People Also Ask, related searches, and more.
Keyword Data API
Returns keyword metrics including search volume, CPC, competition level, search intent, and related keywords.
Explore More
MCP Server
Connect Claude Desktop, Cursor, and other AI tools to your Semust SEO data with our MCP Server (56 tools).
Quick Start
1
Get API Credentials
Go to the API Access page in your dashboard and create a new API user.
2
Add Authentication Headers
Include
SEMUST-API-USER and SEMUST-API-PASSWORD headers in all your requests.3
Make Your First Request
Send a POST request to the SERP or Keyword Data endpoint with your keyword.
Base URL
All API requests should be made to the following base URL:All requests must use HTTPS. HTTP requests will be rejected.