# APIs

- [Certificate variables & helpers](https://documentation.opencrvs.org/v2.0/technical/apis/certificate-variables-and-helpers.md)
- [Core APIs](https://documentation.opencrvs.org/v2.0/technical/apis/core-apis.md)
- [Events](https://documentation.opencrvs.org/v2.0/technical/apis/core-apis/events.md)
- [Search](https://documentation.opencrvs.org/v2.0/technical/apis/core-apis/search.md)
- [Locations](https://documentation.opencrvs.org/v2.0/technical/apis/core-apis/locations.md)
- [Integrations](https://documentation.opencrvs.org/v2.0/technical/apis/core-apis/integrations.md)
- [Attachments](https://documentation.opencrvs.org/v2.0/technical/apis/core-apis/attachments.md)
- [Models](https://documentation.opencrvs.org/v2.0/technical/apis/core-apis/models.md)
- [Toolkit](https://documentation.opencrvs.org/v2.0/technical/apis/toolkit.md)
- [Configuration](https://documentation.opencrvs.org/v2.0/technical/apis/toolkit/configuration.md)
- [Advanced search](https://documentation.opencrvs.org/v2.0/technical/apis/toolkit/configuration/advanced-search.md)
- [Conditionals](https://documentation.opencrvs.org/v2.0/technical/apis/toolkit/conditionals.md): All conditional builders return a JSONSchema object. Combine them with and, or, and not. Use them in field or action conditionals arrays.
- [Deduplication](https://documentation.opencrvs.org/v2.0/technical/apis/toolkit/deduplication.md)
- [API Client](https://documentation.opencrvs.org/v2.0/technical/apis/toolkit/api-client.md)


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