OneClickSEO API

With the OneClickSEO API you can pull the same SEO and AI-visibility data that powers the OneClickSEO app into your own integrations, dashboards and automations. The API is JSON over HTTPS, read-oriented, and authenticated with a single API key.

Currently the API lets you query data from these areas:

• Keywords - search volume, difficulty, CPC, intent and 12-month trend, plus keyword ideas, clusters and AEO content briefs.
• SERP - the top organic results for a keyword with domain authority metrics, SERP features, People Also Ask and related searches.
• Domains - domain rating, backlinks, referring domains and spam score for any domain.
• Backlinks - backlink-gap prospects: domains that link to your competitors but not to you.
• Rank Tracker - tracked keywords, their latest positions and full position history.
• Site Audit - projects, crawl results, per-page SEO scores and prioritised issues.
• AI Visibility - whether a domain is cited in AI answers across Google AI Overviews, Perplexity, Gemini, ChatGPT and Claude.

Base URL

Every endpoint is served from a single versioned base URL. All requests must use HTTPS.

https://api.oneclickseo.ai/v1

Authentication

Authenticate every request with a bearer token in the `Authorization` header. Create and manage keys in your dashboard under Settings → API. See Authentication for details.

curl https://api.oneclickseo.ai/v1/keywords/overview?keyword=seo%20tools&country=us \
  -H "Authorization: Bearer YOUR_API_KEY"

Response format

Successful responses return a JSON envelope with a `data` payload and a `meta` object. List endpoints include pagination details in `meta`.

{
  "data": { /* resource or array of resources */ },
  "meta": {
    "request_id": "req_8f2c1a",
    "credits_charged": 1
  }
}

Next steps

• Authentication - create your API key and make your first call.
• Credits & limits - understand quotas and per-operation costs.
• Rate limiting and Errors - build a resilient client.
• Keyword overview - the most common first request.