---
title: "Complete entity-member OIDC callback"
method: GET
path: "/v3/auth/entity/callback"
tags: ["Auth"]
---

# Complete entity-member OIDC callback

`GET /v3/auth/entity/callback`

Validates state, nonce, ID-token claims, and active entity-member access.

## Query parameters

- `code` string, required
- `state` string, required

## Other responses

- `302` — Successful callback; session and CSRF cookies are set, then the browser is redirected.
- `400` — Invalid callback, state, nonce, or ID token.
- `403` — OIDC identity is not an active entity member.
- `503` — Entity authentication is not configured.

---

[API](https://skmtc.dev/euler/apis/euler-data-api-v3.md) · [All operations](https://skmtc.dev/euler/apis/euler-data-api-v3/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/euler/euler-data-api-v3/revisions/9e69e7cdb054/schema)