---
title: "Initiate OAuth2 authorization"
method: GET
path: "/oauth/authorize"
tags: ["oauth"]
---

# Initiate OAuth2 authorization

`GET /oauth/authorize`

Validates authorization request parameters and redirects to the frontend consent page per RFC 6749.

## Query parameters

- `response_type` string, required
- `client_id` string, required
- `redirect_uri` string, required
- `code_challenge` string, required
- `code_challenge_method` string, required
- `state` string

## Other responses

- `302` — Found
- `400` — Bad Request

---

[API](https://skmtc.net/langchain-ai/apis/langsmith.md) · [All operations](https://skmtc.net/langchain-ai/apis/langsmith/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/langchain-ai/langsmith/revisions/a0acb3a6a101/schema)