Greenhouse Job Board API vs Adzuna API for AI agents
Greenhouse Job Board API is a public JSON view of one company's offices, departments and published jobs on Greenhouse, meant for building that company's careers site. Adzuna API is a REST API from the Adzuna job search engine for searching its job ads plus salary and labour-market data.
The short answer
- Greenhouse Job Board API: Reading a known company's live openings straight from its own applicant tracking system.
- Adzuna API: Building a job board or labour-market tool with an aggregated, multi-country job feed plus salary data.
Side by side
| Greenhouse Job Board API | Adzuna API | |
|---|---|---|
| Searches | One employer's Greenhouse job board per call (by board_token); employer-direct, no cross-company search. | Adzuna's aggregated job ads, queried per country via a two-letter code in the URL (docs examples use gb). |
| Returns | JSON jobs with id, title, location.name, updated_at, absolute_url and, with content=true, the full description, departments and offices. | JSON results with id, title, a description snippet, company.display_name, location, category, salary_min/salary_max, salary_is_predicted, contract_type, created, latitude/longitude and redirect_url. |
| Before the first call | Nothing for GET: no authentication; you need the company's board_token. Submitting applications needs the company's API key. | Register for an app_id and app_key, sent as query parameters on every call. |
| Free | No key needed, and its pages state no price | Default limits of 25 hits per minute, 250 per day, 1,000 per week and 2,500 per month; commercial use is permitted subject to a 14-day trial. |
| Acting on a result | absolute_url is the employer's own job post (the docs don't say where it is hosted). | redirect_url; the documented examples point to adzuna.co.uk/jobs/land/ad/... (through Adzuna), not straight to the employer. |
| Limits on keeping or showing results | Not stated on its pages | Each displayed ad must carry an 'Adzuna' label at least 116x23 px, linked to Adzuna; on termination all Adzuna data must be removed; after the trial a licence agreement may be required. |
| Coverage | Wherever the employer hires. | Not stated on its pages |
| MCP server | No official server listed | No official server listed |
Where Openpath fits
If the agent needs a job to apply for in Austin, Texas, or a remote one, Openpath returns the listings themselves, free and with no key. See Openpath vs Greenhouse Job Board API and Openpath vs Adzuna API.
Questions people ask
What do I need before I can use Greenhouse Job Board API?
Nothing for GET: no authentication; you need the company's board_token. Submitting applications needs the company's API key.
Is Greenhouse Job Board API free?
No key needed, and its pages state no price.
What do I need before I can use Adzuna API?
Register for an app_id and app_key, sent as query parameters on every call.
Is Adzuna API free?
Default limits of 25 hits per minute, 250 per day, 1,000 per week and 2,500 per month; commercial use is permitted subject to a 14-day trial.
Sources
Every line about another company comes from its own pages. Prices and terms change, so check the source before you rely on one.
Greenhouse Job Board API, read on October 15, 2026:
- docs.greenhouse.io/job-board.html: “Job Board data is publicly available, so authentication is not required for any GET endpoints.”
- docs.greenhouse.io/job-board.html: “a simple JSON representation of your company's offices, departments, and published jobs”
Adzuna API, read on October 15, 2026:
- developer.adzuna.com/overview: “two obligatory parameters”
- developer.adzuna.com/docs/terms_of_service: “250 hits per day”
- developer.adzuna.com/docs/terms_of_service: “permitted subject to a 14 day trial period”
- developer.adzuna.com/docs/terms_of_service: “a licence agreement may be required”
- developer.adzuna.com/docs/terms_of_service: “label each displayed advert with the phrase "Adzuna" at least 116 X 23 pixels in size”
- developer.adzuna.com/docs/search: “we currently only provide a snipped of the job description”
- developer.adzuna.com/docs/search: “http://adzuna.co.uk/jobs/land/ad/129698749”