Bullhorn

Bullhorn is a cloud-based CRM and applicant tracking system (ATS) built for the staffing and recruitment industry. Its REST API exposes the Bullhorn Staffing Object Model — Candidate, JobOrder, JobSubmission, Placement, ClientCorporation, ClientContact, Lead, Opportunity, Note, Appointment and related entities — with full CRUD, DB-backed query, Lucene full-text search, mass update, resume parsing, and file-attachment operations. Authentication is OAuth 2.0 (authorization_code + refresh_token) exchanged via a /login call for a short-lived BhRestToken session; API traffic routes to data-center-specific hosts discovered through the loginInfo endpoint. Bullhorn also publishes an official Java SDK, a Passport.js OAuth strategy, the Novo Elements Angular UI component library, and a CSV Data Loader CLI.

Bullhorn publishes 1 API on the APIs.io network. Tagged areas include Company, Staffing, Recruitment, Applicant Tracking, and ATS.

Bullhorn’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

37.1/100 thin ▬ flat Agent 17/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5

AccessSelf serve

1 APIs

CompanyStaffingRecruitmentApplicant TrackingATSCRMHuman ResourcesRESTOAuth

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 37.1/100 · thin

Contract Quality 0.0 / 25

Developer Ergonomics 13.0 / 20

Commercial Clarity 12.1 / 20

Operational Transparency 2.7 / 13

Governance 0.0 / 12

Discoverability 9.3 / 10

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/bullhorn: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Components

DataModel

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 4

Authentication, authorization, and security posture

Authentication

Compliance

TrustCenter

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: bullhorn
name: Bullhorn
description: Bullhorn is a cloud-based CRM and applicant tracking system (ATS) built for the staffing and recruitment industry.
  Its REST API exposes the Bullhorn Staffing Object Model — Candidate, JobOrder, JobSubmission, Placement, ClientCorporation,
  ClientContact, Lead, Opportunity, Note, Appointment and related entities — with full CRUD, DB-backed query, Lucene full-text
  search, mass update, resume parsing, and file-attachment operations. Authentication is OAuth 2.0 (authorization_code + refresh_token)
  exchanged via a /login call for a short-lived BhRestToken session; API traffic routes to data-center-specific hosts discovered
  through the loginInfo endpoint. Bullhorn also publishes an official Java SDK, a Passport.js OAuth strategy, the Novo Elements
  Angular UI component library, and a CSV Data Loader CLI.
url: https://raw.githubusercontent.com/api-evangelist/bullhorn/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://www.bullhorn.com/wp-content/themes/bullhorn/assets/images/bullhorn-logo.svg
tags:
- Company
- Staffing
- Recruitment
- Applicant Tracking
- ATS
- CRM
- Human Resources
- REST
- OAuth
apis:
- name: Bullhorn REST API
  description: REST API over the Bullhorn Staffing Object Model — CRUD, query, Lucene search, mass update, resume parsing,
    and file attachments across Candidate, JobOrder, Placement, ClientCorporation, ClientContact, Lead, Opportunity and related
    entities.
  humanURL: https://bullhorn.github.io/rest-api-docs/
  baseURL: https://rest.bullhornstaffing.com/rest-services/
  tags:
  - Staffing
  - Recruitment
  - ATS
  - CRM
  properties:
  - type: Documentation
    url: https://bullhorn.github.io/rest-api-docs/
  - type: APIReference
    url: https://bullhorn.github.io/rest-api-docs/
  - type: Authentication
    url: authentication/bullhorn-authentication.yml
  - type: Conventions
    url: conventions/bullhorn-conventions.yml
  - type: ErrorCatalog
    url: errors/bullhorn-error-codes.yml
  - type: DataModel
    url: data-model/bullhorn-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.bullhorn.com/
- type: DeveloperPortal
  url: https://developer.bullhorn.com
- type: Documentation
  url: https://bullhorn.github.io/rest-api-docs/
- type: APIReference
  url: https://bullhorn.github.io/rest-api-docs/
- type: GettingStarted
  url: https://bullhorn.github.io/rest-api-docs/
- type: GitHubOrganization
  url: https://github.com/bullhorn
- type: Support
  url: https://www.bullhorn.com/support/
- type: Blog
  url: https://www.bullhorn.com/blog/
- type: StatusPage
  url: https://status.bullhorn.com
- type: Pricing
  url: https://www.bullhorn.com/pricing/
- type: SignUp
  url: https://www.bullhorn.com/request-a-demo/
- type: TermsOfService
  url: https://www.bullhorn.com/terms-of-service/
- type: PrivacyPolicy
  url: https://www.bullhorn.com/privacy-policy/
- type: Authentication
  url: authentication/bullhorn-authentication.yml
- type: Conventions
  url: conventions/bullhorn-conventions.yml
- type: ErrorCatalog
  url: errors/bullhorn-error-codes.yml
- type: Lifecycle
  url: lifecycle/bullhorn-lifecycle.yml
- type: Packages
  url: packages/bullhorn-packages.yml
- type: SDKs
  url: packages/bullhorn-packages.yml
- type: CLI
  url: cli/bullhorn-cli.yml
- type: Components
  url: components/bullhorn-components.yml
- type: DataModel
  url: data-model/bullhorn-data-model.yml
- type: Conformance
  url: conformance/bullhorn-conformance.yml
- type: Compliance
  url: https://www.bullhorn.com/security/
- type: TrustCenter
  url: security/bullhorn-trust-center.yml
- type: DomainSecurity
  url: security/bullhorn-domain-security.yml
- type: LLMsTxt
  url: llms/bullhorn-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Bullhorn

Kin Score

APIs 1

Bullhorn REST API

Security Posture 3

Bullhorn Authentication

Bullhorn Domain Security

Bullhorn Trust Center

Resources