Similarity, Market Salary, and Salary Boosting Skills API - Update

On November 23, 2026 - To deliver clearer feedback, Lightcast is updating its status response codes, helping users easily distinguish between insufficient data and invalid input errors.

Impacted APIs:

• Similarity API
• Market Salary API
• Salary Boosting Skills

Organizations utilizing Lightcast model endpoints are encouraged to review the expected status response behaviors associated with each specific request condition below:

• 200 🟢 — Valid request

• 200 🟢 — Valid request but unmodeled

              The response payload contains an empty data list alongside a warning string indicating:
              "{id} is a valid {dimension}, but we do not have sufficient data"
  

• 400 🔴 — Invalid request

             The payload will provide an error detail string reading:
             "{id} is not a valid for {dimension}"
  

• 500 🔴 — The service is not healthy