Bullhorn REST API: mass-update a batch of entity records in one call
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}/massUpdate to confirm which entity types support mass update (Candidate, ClientContact, ClientCorporation, JobOrder, JobSubmission, Lead, NPSUserInfo, Opportunity, Placement, Task, Tearsheet).
Call GET {corporation-token}/massUpdate/{entityType} to see which properties on that entity type are mass-updatable and the entitlement each requires.
POST {corporation-token}/massUpdate/{entityType} with a JSON body containing an 'ids' array (max 10,000) plus the property/value pairs to apply to every listed record.
For association fields, use either the replace form (assign a single id) or the add/remove form, e.g. "assignedUsers": {"add": [123], "remove": [456]}.
Check the response's updated-count to confirm how many of the submitted ids were actually changed.
Known gotchas
The ids array is capped at 10,000 entries per massUpdate call — batch larger sets across multiple requests.
Only properties returned by GET /massUpdate/{entityType} for that specific entity type are eligible; attempting to mass-update an unsupported field is rejected.
Association updates require the explicit add/remove object syntax — passing a bare id replaces the entire association rather than appending to it.
Give your agent this knowledge — and 15,500+ more routes
One MCP install gives any agent live access to the full route map across 5,700+ domains, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp
Need this verified for your stack — or a route we don't have yet?