---
title: "Get the OpenAPI document"
method: GET
path: "/openapi.json"
tags: ["system"]
---

# Get the OpenAPI document

`GET /openapi.json`

Returns the normalized OpenAPI document served by this Dagu instance

## Response `200`

The OpenAPI document

- object

## Other responses

- `401` — Not authenticated
- `default` — Unexpected error

## Changes

- **2026-04-30** (v1) `50e1d517afc1` — 2 info
  - removed the `rate_limited` enum value from the `code` response property for the response status `401`
  - removed the `rate_limited` enum value from the `code` response property for the response status `default`

[Change history](https://skmtc.dev/dagucloud/apis/dagu/changes/openapi.json/get.md)

---

[API](https://skmtc.dev/dagucloud/apis/dagu.md) · [All operations](https://skmtc.dev/dagucloud/apis/dagu/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/dagucloud/dagu/revisions/0cce8472f3ba/schema)