---
title: "Changes to Initiate a Single-Sign On flow."
method: POST
path: "/sso"
---

# Changes to Initiate a Single-Sign On flow.

`POST /sso`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 4 of 51 revisions.

- **2025-02-07** `4d0f1a6c1ad9`: 2 info
- **2023-12-13** `77f9aeb9339a`: 2 info
- **2023-08-23** `ffb4de94b0fb`: 2 info
- **2023-02-01** `144a34ca6d74`: 6 warning

## Changes

- **2025-02-07** `4d0f1a6c1ad9`: 2 info
  - added the optional property `error_code` to the response with the `400` status
  - added the optional property `error_code` to the response with the `404` status
- **2023-12-13** `77f9aeb9339a`: 2 info
  - added the optional property `weak_password` to the response with the `400` status
  - added the optional property `weak_password` to the response with the `404` status
- **2023-08-23** `ffb4de94b0fb`: 2 info
  - added the new optional request property `code_challenge`
  - added the new optional request property `code_challenge_method`
- **2023-02-01** `144a34ca6d74`: 6 warning
  - removed the request property `code_challenge`
  - removed the request property `code_challenge_method`
  - removed the optional property `error_code` from the response with the `400` status
  - removed the optional property `error_code` from the response with the `404` status
  - removed the optional property `weak_password` from the response with the `400` status
  - removed the optional property `weak_password` from the response with the `404` status

---

[Operation](https://skmtc.dev/supabase/apis/supabase-auth-rest-api/docs/sso/post.md) - [API](https://skmtc.dev/supabase/apis/supabase-auth-rest-api.md) - [Page](https://skmtc.dev/supabase/apis/supabase-auth-rest-api/changes/sso/post)