---
title: "Write or create a file"
method: PUT
path: "/fs/write_file"
---

# Write or create a file

`PUT /fs/write_file`

## Query parameters

- `path` string, required
- `mode` string

## Response `201`

File written successfully

## Other responses

- `400` — Bad Request
- `404` — Not Found
- `500` — Internal Server Error

## Changes

> 52 revisions in range; 4 could not be searched.

- **2025-08-07** `a6916d846229` — 1 info
  - endpoint added
- **2025-06-27** `f980a92ab23f` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/kernel/apis/kernel-images-api/changes/fs/write_file/put.md)

---

[API](https://skmtc.dev/kernel/apis/kernel-images-api.md) · [All operations](https://skmtc.dev/kernel/apis/kernel-images-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/kernel/kernel-images-api/revisions/7a641fa15a85/schema)