Integrate every assessment module with one API

Ship new integrations in days, not months. Read and write assessment and background check data to all major applicant tracking systems with our Unified API.

Trusted by the world’s leading B2B companies

Why leading assessment and background check providers choose Kombo

One standardized model
Publish packages and write back results to any ATS using the same set of endpoints. Whether it’s Workday, SAP SuccessFactors, or Lever, you work with the same assessment data model.
Seamless authentication
Embed our white-labeled connection guide into your product to easily let your customers connect their systems.
Access any data
Map custom fields from any system to your own unified schema. Use remote data to access raw data when you need to access niche fields.
Full visibility
Track sync status, spot authentication issues, and debug problems from the dashboard. Get webhook notifications when things change or need attention.

One data model for every integration

Build to Kombo once and connect to any ATS assessment module. Setting up packages, receiving webhooks for new orders, and writing back results in structured formats work the same whether you're connected to Avature, UKG Pro, Bullhorn, or SmartRecruiters - same endpoints, same fields, same format.

Write back structured assessment results

Deliver rich result data - subscores, criteria, completion times, and more - in a structured format into the ATS to let recruiters take their hiring decisions. Kombo handles the mapping to the format each system expects, whether you’re connected to Workday, SAP SuccessFactors, Greenhouse, or SmartRecruiters.

Monitor all your integrations from one place

See sync status, authentication issues, and errors across every customer connection in the dashboard. Searchable logs show you exactly what happened with each API request. Set up webhooks to get notified when errors occur or credentials need attention, so your support team can resolve issues without always having to pull in engineering.

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Data model library

Packages (Assessment)
The Package object represents an assessment or background check offering that can be ordered through the ATS. Use it to define your available products - such as skills tests, video interviews, or background checks - that hiring teams can select when evaluating candidates
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Orders (Assessment)
The Order object represents a request from the ATS to conduct an assessment or background check on a candidate. Each order includes the selected package, candidate details, and associated job and application information.
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Results (Assessment)
The Result object tracks the outcome of an assessment or background check order. Use it to write back completion status, scores, and result links to the ATS once a candidate has finished their assessment.
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Webhooks (Assessment)
The assessment webhook notifies you in real-time when a hiring team requests an assessment or background check for a candidate in the ATS. Use it to immediately trigger your assessment workflow without polling for new orders.
Docs

Discover our HRIS integrations

Discover our ATS integrations

Discover our LMS integrations

Discover our LMS integrations

Build and maintain all HRIS integrations with one data model. Employees, groups, performance, and timesheets all follow the same format - no need to transform data or map fields differently for each system.
Build and maintain ATS integrations with one data model. Jobs, candidates, applications, and attachments all follow the same format - no need to transform data or map fields differently for each system.
Build and maintain LMS integrations with one data model. Users, courses, and progressions follow the same format - no need to transform data or map fields differently for each system.
Build and maintain Assessment integrations with one data model. Packages, orders, and results follow the same format - no need to transform data or map fields differently for each system.
ATS (Assessment)
Workday
ATS
ATS (Assessment)
HRIS
LMS
SAP SuccessFactors
ATS
ATS (Assessment)
HRIS
LMS
SmartRecruiters
ATS
ATS (Assessment)
Factorial
ATS
HRIS
Oracle Recruiting Cloud
ATS
ATS (Assessment)
Lever
ATS
ATS (Assessment)
Loxo
ATS
iCIMS
ATS
ATS (Assessment)
Cornerstone TalentLink
ATS
Recruitee
ATS
ATS (Assessment)
RecruiterFlow
ATS
Greenhouse
ATS
ATS (Assessment)
Teamtailor
ATS
ATS (Assessment)
Teamtailor Job Boards
ATS
Ashby
ATS
ATS (Assessment)
CEGID TalentSoft FrontOffice
ATS
concludis
ATS
Talention
ATS
P&I Loga
ATS
Onlyfy
ATS
Personio
ATS
HRIS
UKG Pro
ATS
ATS (Assessment)
HRIS
UKG Ready
ATS
HRIS
ADP Workforce Now
ATS
HRIS
Taleo
ATS
rexx systems
ATS
HRIS
AFAS Software
ATS
HRIS
BambooHR
ATS
HRIS
Bullhorn
ATS
ATS (Assessment)
Workable
ATS
Jobvite
ATS
ATS (Assessment)
Fountain
ATS
Softgarden
ATS
Pinpoint
ATS
Welcome to the Jungle
ATS
d.vinci
ATS
d.vinci admin
ATS
JOIN
ATS
Sage HR
ATS
HRIS
TRAFFIT
ATS
eRecruiter
ATS
Abacus Umantis
ATS
Jobylon
ATS
ATS (Assessment)
Taleez
ATS
HR WORKS
ATS
HRIS
OTYS
ATS
Zoho Recruit
ATS
Ceipal
ATS
Eploy
ATS
JobDiva
ATS
CareerPlug
ATS
Perview
ATS
Eightfold
ATS
ATS (Assessment)
Paylocity
ATS
HRIS
Paycor
ATS
HRIS
Avature
ATS
ATS (Assessment)
Apploi
ATS
Phenom
ATS
Paradox
ATS
Heyrecruit
ATS
RECRU
ATS
JazzHR
ATS
BITE
ATS
Homerun
ATS
Mysolution
ATS
Carerix
ATS
HR Office
ATS
Talent Clue
ATS
InRecruiting by Zucchetti
ATS
Ubeeo
ATS
Connexys By Bullhorn
ATS
HR4YOU
ATS
HRIS
Cornerstone OnDemand
ATS
HRIS
LMS
Zvoove Recruit
ATS
Odoo
ATS
Spark Hire Recruit
ATS
Compleet (PersoProfiler)
ATS
Compleet
ATS
Gem
ATS
Laura
ATS
Coveto (REST API)
ATS
Coveto (legacy SOAP API)
ATS
Crelate
ATS
Manatal
ATS
Avionté
ATS
MHM HR
ATS
Asymbl
ATS
Breezy HR
ATS
Flatchr
ATS
Dayforce
ATS
HRIS
LMS
ApplicantStack
ATS
ReachMee
ATS
TalentAdore
ATS
GuideCom
ATS
PayFit
HRIS
Employment Hero
HRIS
Fourth
HRIS
Kenjo
HRIS
HeavenHR
HRIS
HiBob
HRIS

Designed for enterprise data protection needs

Customer trust and data security are critical to us. Kombo provides comprehensive security controls and compliance frameworks specifically built for the regulatory requirements and data sensitivity of HR and TA tech integrations.
Reliability at scale
We power integrations for hundreds of companies, from seed-stage startups to Fortune 500 enterprises - all while maintaining 99.9% uptime. Our infrastructure is built to handle your growth without compromising performance.
Onboarding support
We work closely with your team via shared Slack or Teams channels. Your customers get detailed connection guides and transparent documentation on tool-specific limitations - so nothing catches them off guard.
Configurable data scoping
Collect only what you need. Define exactly which fields, information, or data points flow through each integration. Mark fields as required, optional, or disabled based on compliance  requirements and use case needs.

Compliant with security and privacy standards

Built-in security controls and industry-standard certifications protect your customers' data. Kombo complies with SOC 2 Type 2, HIPAA, GDPR, and is also ISO 27001 certified.