> For the complete documentation index, see [llms.txt](https://docs.keyfax.biz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.keyfax.biz/integrations/apis.md).

# API Docs

- [REST API](https://docs.keyfax.biz/integrations/apis/rest-api.md): Documentation for versions of the Keyfax REST based Web API.
- [Quick Start](https://docs.keyfax.biz/integrations/apis/rest-api/quick-start.md): Learn how to quickly get started with the Keyfax REST based Web API.
- [Deep Dive](https://docs.keyfax.biz/integrations/apis/rest-api/deep-dive.md): A technical deeper dive into the Keyfax REST based Web API.
- [API SDKs](https://docs.keyfax.biz/integrations/apis/rest-api/api-sdks.md): Learn how to use the Keyfax Web API .NET or JavaScript SDK's.
- [.NET SDK](https://docs.keyfax.biz/integrations/apis/rest-api/api-sdks/.net-sdk.md): Learn more about the Keyfax Web API .NET SDK.
- [JavaScript SDK](https://docs.keyfax.biz/integrations/apis/rest-api/api-sdks/javascript-sdk.md): Learn how to use the Keyfax Web API JavaScript SDK.
- [Start-Up Data](https://docs.keyfax.biz/integrations/apis/rest-api/api-sdks/start-up-data.md)
- [Processing Results](https://docs.keyfax.biz/integrations/apis/rest-api/api-sdks/processing-results.md)
- [API Reference](https://docs.keyfax.biz/integrations/apis/rest-api/api-reference.md): The main Web API end points required for most host integrations.
- [SOAP API](https://docs.keyfax.biz/integrations/apis/soap.md): Technical details related to the Keyfax SOAP based web services.
- [Quick Start](https://docs.keyfax.biz/integrations/apis/soap/quick-start.md): A guide to help you get up & running with the Keyfax SOAP API.
- [Error Handling](https://docs.keyfax.biz/integrations/apis/soap/error-handling.md): Error handling details related to the Keyfax SOAP based web services.
- [Status Codes](https://docs.keyfax.biz/integrations/apis/soap/status-codes.md): Status Codes returned by Keyfax upon script completion.
- [XML Schemas](https://docs.keyfax.biz/integrations/apis/soap/xml-schemas.md)
- [Startup Schema](https://docs.keyfax.biz/integrations/apis/soap/xml-schemas/startup-schema.md): All the supported start-up data supported by Keyfax.
- [Results Schema](https://docs.keyfax.biz/integrations/apis/soap/xml-schemas/results-schema.md): Details the export information generated by a Keyfax session.
- [Results with Note](https://docs.keyfax.biz/integrations/apis/soap/xml-schemas/results-with-note.md): This sample illustrates an export schema with notes.
- [Cancelled  Schema](https://docs.keyfax.biz/integrations/apis/soap/xml-schemas/cancelled-schema.md): The default cancellation schema for a Keyfax session.
- [Address data](https://docs.keyfax.biz/integrations/apis/soap/xml-schemas/address-data.md): How addresses are represented within Keyfax.
- [Legacy APIs](https://docs.keyfax.biz/integrations/apis/legacy-apis.md)
- [Active X](https://docs.keyfax.biz/integrations/apis/legacy-apis/active-x.md)
- [Asynchronous Pluggable Protocols](https://docs.keyfax.biz/integrations/apis/legacy-apis/asynchronous-pluggable-protocols.md)
- [XmlHttp](https://docs.keyfax.biz/integrations/apis/legacy-apis/xmlhttp.md)