US wages for 1,008 occupations and by state, from BLS OEWS May 2025, static JSON, CC BY 4.0.
PayCrunch API is a free Open Data API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Free, public, read-only salary API. Annual pay for 1,008 U.S. occupations and the best-paying state for 824 of them, as static JSON. No key, no rate limit, CC BY 4.0.
Details from paycrunch.co.

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The PayCrunch API is provided by paycrunch.co (paycrunch.co). Free, public, read-only salary API. Annual pay for 1,008 U.S. occupations and the best-paying state for 824 of them, as static JSON. No key, no rate limit, CC BY 4.0.
Yes. The PayCrunch API is listed in the Open Data category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The PayCrunch API requires no authentication, so you can start making requests without signing up.
Yes. The PayCrunch API supports CORS, so front-end JavaScript can call it directly.
Yes. The PayCrunch API is served over HTTPS, so it's safe to use in production.