Build Your Own SEO Tools

Real-time and on-demand SERP data. Supports Google, Bing, Yahoo, Yandex, Baidu. Returns structured data including SERP features, ads, local packs. Good documentation and predictable pricing.

Clean, well-documented SERP API. Returns JSON with all SERP features parsed. Supports Google, Bing, Baidu, Yandex, and more. Higher price but excellent reliability and support. Good for production systems.

Budget SERP API. Lower cost than SerpApi, simpler feature set. Good for basic SERP scraping needs. Less comprehensive SERP feature parsing. Fine for rank tracking, less suitable for detailed SERP analysis.

Access Ahrefs data programmatically: backlinks, organic keywords, traffic estimates. Requires an Ahrefs subscription plus API add-on. Expensive but access to the best backlink data. Use if you're already paying for Ahrefs and need automation.

Domain Authority, Page Authority, spam score, and backlink data. Widely used for DA/PA metrics despite their limitations. Good documentation. Useful if your workflow depends on Moz metrics.

Trust Flow, Citation Flow, and topical trust flow data. Large backlink index. API included with subscriptions at certain tiers. Good for agencies that use Majestic metrics in their workflow.

Growing backlink index with pay-as-you-go pricing. Not as comprehensive as Ahrefs, but much more affordable for bulk operations. Good for building tools that need backlink data at scale.

Official source for Google keyword data. Requires Google Ads account. Complex to set up but the only official volume data. Returns ranges unless you're spending on ads.

Keyword volume, difficulty, related keywords, questions. Pulls from multiple data sources. Good for bulk keyword research automation. Much simpler than setting up Google Ads API.