---
title: "Handle CAS callback"
method: GET
path: "/auth/callback"
tags: ["Authentication"]
---

# Handle CAS callback

`GET /auth/callback`

Processes the callback from CAS after successful authentication, validates the ticket, and establishes a user session.

## Query parameters

- `ticket` string, required

## Other responses

- `302` — Redirect to the application frontend.
- `400` — Bad Request
- `500` — Internal Server Error

## Changes

- **2025-07-13** `0d7f3c750979` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/osdg-iiith/apis/forms-portal-api/changes/auth/callback/get.md)

---

[API](https://skmtc.dev/osdg-iiith/apis/forms-portal-api.md) · [All operations](https://skmtc.dev/osdg-iiith/apis/forms-portal-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/osdg-iiith/forms-portal-api/revisions/3fcd68b489c2/schema)