100M+
Websites
Traffic · Audience · Competitors
Official Similarweb API V5 · 22 endpointsBring Similarweb to Your Agentfor Competitive Analysis
Access digital intelligence at scale
Retrieve trusted insights across the digital economy
Powered by the official Similarweb API
Access official-source digital intelligence trusted by thousands of companies
4M+
Mobile Apps
Downloads · Rankings · Engagement
5B+
Keywords
SEO · PPC · SERP
30M+
Companies
Company data · Lead enrichment
What can you build with Similarweb API
Analysis demo
Benchmark your real competitors
Compare traffic, engagement, rankings, and momentum to see who is actually gaining ground.
- Market position
- Growth momentum
- Engagement gap
Analysis demo
Diagnose the acquisition mix
Break down search, referrals, social, display, and direct traffic to expose channel strengths and dependencies.
- Channel mix
- Referral sources
- Paid activity
Analysis demo
Find the next market to enter
Compare geographic demand and category leaders to prioritize countries where your offer has room to grow.
- Country demand
- Local leaders
- Expansion priority
Analysis demo
Map the audience you can win
Reveal audience overlap, demographics, interests, and adjacent sites to sharpen targeting and partnerships.
- Audience overlap
- Demographic fit
- Adjacent interests
Analysis demo
Reverse-engineer content strategy
Inspect popular pages, site structure, subdomains, and technologies to understand what drives competitor growth.
- Winning pages
- Content structure
- Technology signals
Analysis demo
Discover untapped search demand
Find keyword competitors, SERP winners, and landing pages that reveal organic and paid opportunities.
- Keyword gaps
- SERP movement
- Landing-page winners
22 official endpoints for a complete market view
Use one endpoint for a focused answer, or combine them into a source-linked research workflow
Keywords & Search
5 endpoints in this category
GET
Keyword Competitors
Identify domains competing for the same organic and paid keywords in search results.
GET
Website Keywords
Return the search terms driving traffic to a website, including organic and paid performance signals.
GET
SERP Players — Clicks Over Time
Track how clicks shift among domains competing for a keyword across the selected time range.
GET
SERP Players — Aggregated
Compare the domains capturing the most search clicks for a keyword in one aggregated view.
GET
Landing Pages
Find the pages receiving search traffic for target keywords and assess which destinations perform best.
See parameters, pricing, and request examples for every endpoint
The API catalog is the source of truth for the current Similarweb V5 integration
Use Similarweb without complex procurement
Buying direct
Developer access through AIsa
Enterprise onboarding
Start with one AIsa account
Contract-based pricing
Usage-based billing
Fixed commitments
Scale with actual usage
Separate data contract
One key across the GTM stack
Start with the Go-to-Market Plan and pay for the data you use
Access Similarweb APIStart With Similarweb API inThree Steps
ExampleRead https://aisa.one/docs/agent-quickstart.md and help me safely connect, configure, and use AIsa's APIs, Skills, and LLMs in this agent environment. My key is sk-aisa-Egr••••••6mEYFrom your console
Step 01
Grab your setup prompt
After sign-in, your console shows a ready-made prompt with your key already inside — nothing to write.
Choose your agent
Paste prompt into a new conversation
Step 02
Paste it into your agent
Use Claude, Codex, Cursor, OpenClaw, or your own agent
Pick one to copy3 examples
Step 03
Ask a Similarweb question
Choose an example below and copy it into your agent
Similarweb is only the beginning
Use Similarweb with Ahrefs, Semrush, Apollo, WaveInflu, Oxylabs, and social data through one Go-to-Market Plan and one AIsa key
Explore the Go-to-Market Plan
AIsa
What to know before using Similarweb API
Is this the official Similarweb API?
Yes. AIsa provides authorized access to official Similarweb data through the Similarweb API V5 integration.
Which Similarweb capabilities are available?
The current integration includes 22 endpoints across traffic and engagement, rankings, acquisition channels, audience intelligence, website content, and keywords and search.
Do I need a separate Similarweb enterprise contract?
No. You can access the available Similarweb endpoints through AIsa's Go-to-Market Plan and use the same AIsa key across the rest of the plan's API catalog.
How is Similarweb API usage billed?
Usage is charged in AIsa credits. The exact credit cost depends on the endpoint and, for row-based endpoints, the number of rows returned. The documentation shows the price before you integrate.
Can an AI agent call these endpoints?
Yes. Your agent can use the AIsa quickstart and API documentation to call Similarweb alongside search, SEO, sales, creator, and social APIs in the same workflow.
Can I use both REST and Batch delivery?
Yes. Similarweb API V5 supports real-time REST requests and Batch delivery for larger analytical workloads, with consistent authentication and response patterns.
Put official web intelligence in your agent
Start with the Go-to-Market Plan, then pay only for the data you use