Keyword Research API
Export live keyword data at scale in a single API call. Built to fit your workflow.
Ask Claude to research keywords based on live data
Connect Claude or any AI assistant to SE Ranking's Keyword Research API via MCP. Get the same keyword data in AI chats as you’d through API endpoints directly.
One MCP, the same keyword data
Claude calls the endpoints you would: search volume, CPC, competition, difficulty, search intent, and month-by-month trend for every keyword you hand it.
Research a market mid-conversation
Drop in a list and the assistant returns it ranked and filtered by volume, CPC, or difficulty in the same chat.
Faster to wire up than a raw integration
Point the assistant at the MCP server and start querying. No auth flow, no batching, no JSON to parse.
Get reliable keyword metrics and data fast, from any market
Extensive keyword data access
SE Ranking’s Keyword Data API offers keyword suggestions and provides fast access to accurate, real-time metrics for up to 5,000 terms from the regional database you specify. Get new keywords and actionable metrics in a single call—perfect for bulk keyword and market research, automating routine reports, scaling content creation, and more:
Keyword suggestions:
List of similar, related, long-tail, and question-based terms
Search volume:
Average monthly searches per keyword
CPC (Cost Per Click):
Average advertiser bid value
Competition:
Keyword competition level (0–1 or 0–100 scale)
Difficulty:
Ranking difficulty score (0–100 scale)
Historical search volume trends:
Month-by-month data to track seasonality and keyword evolution
Scalable & flexible integration
One API call does it all:
Process up to 5,000 keywords in a single POST request to keep your batch jobs efficient and quick.
Use consistent JSON responses across all markets for smooth data processing.
Choose only the data you need (like keyword, volume, difficulty) to trim payload size and save API units.
Sort results by volume, CPC, difficulty or competition to quickly find low-competition gems, high-value keywords, and more.
Precise market targeting
Use ISO Alpha-2 country codes (e.g., “us”, “de”) to grab keyword data from desired markets only. This helps you:
Get accurate local search demand directly from the API
Skip the hassle of juggling data from different sources, messy exports, or scraping
Double down on your SEO and marketing efforts where they’ll make the biggest impact
Work with SE Ranking data inside any AI assistant
Connect via MCP and reach your SEO, GEO, and keyword data inside Claude, ChatGPT, Cursor, or any other AI tool. 1-minute setup, no exports, no code, no break in your workflow.
Use cases for the Keyword Data API
Spot untapped market opportunities
Turn keyword suggestions into competitive advantage. Discover similar, related, question-based, and long-tail terms to uncover new topics. Identify emerging trends early, map new content angles, and expand your semantic footprint with data-backed opportunities grounded in real user search behavior.
Optimize budget with paid and organic insights
Observe high-CPC keywords where your rankings aren’t great yet. Get alerts when CPC is above a certain threshold but your rank is low. Then shift your budget from paid ads to SEO for better bang for your buck.
Accelerate content creation with AI briefs
Run your keyword data through an AI prompt to generate attention-grabbing titles, smart heading structures, and clear intent for low-difficulty keywords. Deliver content briefs quickly and slash time spent on bringing freelancers up to speed.
Send keyword data into the tools you already use
Connect SE Ranking to the tools your team already works in — no custom development, no rebuilding the workflows you've got.
n8n
Open-source automation with a visual workflow builder.
Wire SE Ranking into your stack to trigger reports, sync keyword metrics on a schedule, and hand off routine research — all from n8n's visual builder.
Data Studio
Live dashboards that blend SEO, GEO, GA4, and GSC.
Feed keyword and trend data straight into Data Studio, so clients and stakeholders open an always-current dashboard instead of waiting on an export.
Make
Visual, no-code automation across your stack.
Use Make to push keyword data into CRMs, project management tools, Slack, and more — connected with clicks, not code.
What SEO pros are saying about SE Ranking’s Keyword API
We use SE Ranking to build winning SEO strategies for our clients. Their suite of tools allows for robust market research, competitive analysis, and website audits—all of which serve to inform our SEO campaign roadmaps.
We use SE Ranking to overcome many SEO-related challenges, from researching keywords to conducting granular analyses of various client-related issues that ultimately help us save a significant amount of time and streamline processes.
Because SEO is time-consuming, SE Ranking’s tools are a great help here. We use it for detailed audits, keyword research, performance monitoring, and reporting. But apart from the actual SEO workflow we do for clients, we also use SE Ranking for our sales process. It helps us build trust with current and potential customers as we can give them a comprehensive overview of the current situation and advise on the next steps.
Discover all the gems in SE Ranking’s powerful toolbox
Flexible, usage-based pricing
Try it free with 100K credits and scale credits as you grow. Only pay for what you use
From
- Backlinks API
- Domain Research API
- Keyword Research API
- Website Audit API
- AI Search API
- Project Management API
What data does the Keyword Research API include?
SE Ranking’s Keyword Analysis API provides all core keyword metrics, including search volume, CPC (cost-per-click), competition levels, keyword difficulty scores, and historical search volume trends. Everything is delivered in one go and ready to plug into your reports, dashboards, product and internal tools.
Can I filter results by country or language?
Yes. Filter results by country using the source parameter in your API request. Plug in the ISO Alpha-2 country code (like source=us, source=de) to get keyword data specific to that region. Keyword data is tied to regional databases, so the results you get will default to the dominant language of that country.
Is historical search trend data included?
Yes! SE Ranking’s Keyword Data API gives you month-by-month search volume for each keyword. This makes it easy to see if a keyword’s popularity is just a seasonal spike, a steady growth trend, or something else. No need to hop between tools to compile data.
How often is the data updated?
SE Ranking’s Keyword Research API data is updated regularly. We provide fresh, accurate keyword info to keep your SEO and marketing decisions on point.
What are the rate limits for Keyword Research API?
Get up to 10 requests per second per API key. Go over that and you’ll get a “Too Many Requests” error, but retrying shortly usually works. Every request uses some API units from your subscription, so watch your quota closely to keep things running smoothly. If you need higher limits, book a call with SE Ranking’s team to discuss your requirements.
Can I use this API without any development experience?
Yes! Using SE Ranking’s Keyword Research API is possible even if you’re not a developer. It’s simple to use, with clear guides that make it easy for anyone to access keyword data. A ready-to-use Postman Collection is available, so you can test and explore the API without having to write any code. When you’re ready for more advanced setups, a developer can step in to help.
Can I get a list of similar keywords via API?
Not at the moment. The Keyword Research API is set up to analyze only the keyword lists you provide. It offers core keyword metrics like search volume, CPC, keyword difficulty, etc., but similar keyword suggestions aren’t available to extract just yet.