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

# GLS API

- [GLS API Reference](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference.md)
- [Resources and Masters](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/resources-and-masters.md)
- [Advanced Ingestion API Reference (Deprecated)](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api-reference-deprecated.md)
- [Get Pre-signed URL](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api-reference-deprecated/get-pre-signed-url.md)
- [Upload File to Storage](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api-reference-deprecated/upload-file-to-storage.md)
- [Create Ingestion Activity](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api-reference-deprecated/create-ingestion-activity.md)
- [Get Ingestion Activity Status](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api-reference-deprecated/get-ingestion-activity-status.md)
- [Advanced Ingestion API](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api.md)
- [Get Pre-signed URL](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api/get-pre-signed-url.md): Generates a presigned URL for uploading files to S3.
- [Upload File to Storage](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api/upload-file-to-storage.md): Upload your file to the presigned URL obtained from the previous step.
- [Create Ingestion Activity](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api/create-ingestion-activity.md): Processes uploaded files through transformation and/or ingestion flows based on template configuration.
- [Get Ingestion Activity Status](https://docs.cleartax.in/cleartax-docs/gls-api/gls-api-reference/advanced-ingestion-api/get-ingestion-activity-status.md): Check the status of a previously submitted ingestion workflow.