Bullhorn REST API: discover entity metadata and lookup/association fields via /meta
domain: bullhorn.com · 6 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Authenticate and obtain a BhRestToken as usual.
Call GET {corporation-token}/meta with no entity name to list all entities and their metaUrl links.
Call GET {corporation-token}/meta/{Entity}?fields=* to retrieve the full field model for one entity, including COMPOSITE, TO_ONE, and TO_MANY association fields.
Add &meta=full (vs. basic or off) to get richer metadata such as field labels and option lists for picklists.
For nested/lookup fields on associated entities, request them with dotted syntax, e.g. fields=placementRateCardLineGroup(placementRateCardLine(*)).
Use the discovered field names to build precise fields= parameters on subsequent entity/query/search calls instead of over-fetching.
Known gotchas
The fields=* wildcard is deprecated and blocked on normal entity/query/search calls for performance reasons — it is only intended for /meta calls.
Read-only system fields (prefixed with _) never appear in entity metadata, even with fields=*, so they can't be discovered this way.
Fetching full metadata for large entities like Candidate can be a heavy response — cache the meta result rather than calling it on every integration run.
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