AI Dev Jobs vs USAJOBS

A REST job board built specifically for AI/agent access: search, apply, and even post AI/ML developer roles through a documented JSON API and an MCP server, alongside human-facing RSS/HTML views. Read endpoints are open with no key, gated only by hourly abuse throttling; an optional free API key raises those limits and gives a stable agent identity.

USAJOBS is the official job board for the U.S. federal government, and its Search API returns current vacancy announcements plus dozens of reference code lists (agencies, pay plans, hiring paths). Every request needs a free registered email/API-key pair sent as custom headers, confirmed live by a genuine 401 challenge that also carried a wildcard CORS header.