Every Major ATS Has a Public JSON API for Job Openings. Nobody Uses Them.

Short summary

The four major ATS systems—Greenhouse, Lever, Ashby, SmartRecruiters—expose public JSON APIs with no authentication required. The author provides exact endpoints, documents each API's quirks and naming differences, shows how to normalize fields, and demonstrates practical use cases: personal job alerts, niche job boards, or hiring signal detection for sales, all running daily for under a cent in compute.

• •Four major ATS providers publish free, unauthenticated JSON APIs with full job data
• •Each has different field names and quirks; author provides exact normalization mappings
• •Practical use cases: job alerts, niche boards, sales hiring signals, all low-cost to run

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