Available exclusively to NCCI affiliates and regulators, NCCI's
Developer Portal is growing fast—and the new additions are here to deliver serious power and efficiency to your workflows.
- Class Information API, the one customers have been asking for: This application programming interface (API) delivers the classification codes and related filed and approved content that are found in
Class Look-Up. We’ve also added NAICS codes, which are only downloadable through this API.
- Experience Rating Suite of APIs: These new APIs are based on our existing Web services and are completely modernized to make it possible for you to enjoy all the benefits available in the
Developer Portal. Here is what’s available now:
- Mod Factors API: Offers access to up to 10 years of mod factors for a business
- Worksheet API for Carrier of Record: Provides payroll and loss data from the
Experience Rating Worksheet
- Risk History API for Carrier of Record: Complements your analysis of payroll and claim history for rated and unrated businesses
- Business Validation API: Provides names and addresses for businesses that are associated with a Federal Employer Identification Number (FEIN)
Stay tuned—we’re introducing more APIs in 2026. Our roadmap is packed with enhancements that will continue empowering carriers and regulators with high-value, modernized services.
Log in to the
Developer Portal here (Note: content requires authentication).
Ready to get access? To request access to the
Developer Portal, please contact NCCI's Customer Service Center at 800-NCCI-123 (800-622-4123) and select Option 6.