Cloudflare API Shield vs Fastly API Security: Side-by-Side Comparison (2026)

Cloudflare API Shield: API security platform for discovering, validating, and protecting API endpoints. built by Cloudflare, Inc.. Core capabilities include Automatic API endpoint discovery using machine learning and heuristics, Protection against OWASP Top 10 API security risks, Schema validation against OpenAPI specifications..

Fastly API Security: API security platform for discovery, monitoring, and protection at edge. built by Fastly. Core capabilities include Automatic API discovery at edge network, Detection of new and unintentional API calls, Integration with Next-Gen WAF for API traffic protection..

Both serve the API Security market but differ in approach, feature depth, and target audience.

Cloudflare API Shield differentiates with Automatic API endpoint discovery using machine learning and heuristics, Protection against OWASP Top 10 API security risks, Schema validation against OpenAPI specifications. Fastly API Security differentiates with Automatic API discovery at edge network, Detection of new and unintentional API calls, Integration with Next-Gen WAF for API traffic protection.

Cloudflare API Shield is developed by Cloudflare, Inc.. Fastly API Security is developed by Fastly. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Cloudflare API Shield and Fastly API Security serve similar API Security use cases: both are API Security tools. Review the feature comparison above to determine which fits your requirements.