---
title: "Begin OAuth authorization with PKCE"
method: GET
path: "/authorize"
tags: ["OAuth"]
---

# Begin OAuth authorization with PKCE

`GET /authorize`

## Request

- Base URL: `https://api.supplyslate.com`
- URL: `https://api.supplyslate.com/authorize`
- Auth: none required

## Query parameters

- `response_type` 'code', required
- `client_id` string, required
- `redirect_uri` string, uri, required
- `code_challenge` string, required
- `code_challenge_method` 'S256', required
- `state` string

## Response `200`

Human OAuth consent page

## Other responses

- `302`: OAuth protocol error redirected to the registered client
- `400`: Invalid authorization request or unknown client
- `401`: Authentication required
- `403`: Scope or tenant boundary denied
- `404`: Resource not found
- `409`: State conflict or idempotency mismatch
- `429`: Rate limited

---

[API](https://skmtc.dev/supplyslate/apis/supplyslate-agent-native-supply-api.md) · [All operations](https://skmtc.dev/supplyslate/apis/supplyslate-agent-native-supply-api/llms.txt) · [OpenAPI document](https://skmtc.dev/supplyslate/apis/supplyslate-agent-native-supply-api/revisions/f7989551f167?raw)