Connect to over 100M payroll and HRIS accounts via a single API and make it easy for your customers to verify employment and income, switch direct deposit or connect HR admin accounts to your app.
Citadel ID API profile
API styles
Developer docs
API Reference
Webhooks
Webhooks management API
Sandbox environment
Authentication
Identity protocols
SSO / Social login
OAuth playground
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GraphQL playground
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API Explorer
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Postman / Insomnia collections
OpenAPI/Swagger specs
Free developer account
App listing requirements
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Pagination style
CLI
Query Language
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Community
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Custom object support
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Stackoverflow tags
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Integrations
Ecosystem
API pricing
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API changelog
Status page
Open-source
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Tutorials
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Base endpoint
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GraphQL endpoint
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IDE Extensions
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