# \#api
**URL:** https://chat.openconceptlab.org/tag/api/14.md
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## [Error: Cannot login via API directly](https://chat.openconceptlab.org/t/error-cannot-login-via-api-directly/138)
**Author:** [@forest](https://chat.openconceptlab.org/u/forest)\
**Replies:** 7\
**Last updated:** [April 2, 2025, 7:18am UTC](https://chat.openconceptlab.org/t/error-cannot-login-via-api-directly/138 "2025-04-02T07:18:33Z")
When trying to Retrieve auth token via API: curl --location 'https://api.openconceptlab.org/users/login/' \\ --header 'Content-Type: application/json' \\ --data '{ "username": "uuuuu", "password": "ppppp" }' I go…
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## [Checksums requirements](https://chat.openconceptlab.org/t/checksums-requirements/56)
**Author:** [@jon](https://chat.openconceptlab.org/u/jon)\
**Replies:** 0\
**Last updated:** [September 13, 2023, 12:18pm UTC](https://chat.openconceptlab.org/t/checksums-requirements/56 "2023-09-13T12:18:40Z")
We are working on requirements and design document for introducing checksums for concepts, mappings, and repositories. Your review and comments are welcome, directly in the deck or simply respond to this post. Checksums…
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## [Repo Version Exports to be Streamed from OCL Core API](https://chat.openconceptlab.org/t/repo-version-exports-to-be-streamed-from-ocl-core-api/84)
**Author:** [@Sny](https://chat.openconceptlab.org/u/Sny)\
**Replies:** 2\
**Last updated:** [March 27, 2024, 12:18pm UTC](https://chat.openconceptlab.org/t/repo-version-exports-to-be-streamed-from-ocl-core-api/84 "2024-03-27T12:18:28Z")
Currently repo (source/collection) version exports are stored in S3/Azure object storage. When the request is made via OCL to download these, OCL returns a link and S3/Azure file link. We are working towards making it m…