---
title: "Write a single file into a runtime"
method: PUT
path: "/v2/runtimes/{runtime_id}/files"
tags: ["Files"]
---

# Write a single file into a runtime

`PUT /v2/runtimes/{runtime_id}/files`

## Request

- Base URL: `https://api.runta.com`
- URL: `https://api.runta.com/v2/runtimes/{runtime_id}/files`
- Auth: HTTP bearer

## Path parameters

- `runtime_id` string, required: Runtime UUID or display name.

## Query parameters

- `path` string, required: Absolute path to a regular file inside the runtime.

## Request body `application/octet-stream`

- string, binary

## Response `204`

no content

## Other responses

- `401`: Missing, malformed, or rejected bearer token
- `403`: The bearer token is not allowed to perform this action
- `404`: The requested resource was not found
- `409`: The request conflicts with current resource state
- `422`: Validation or application error
- `429`: Rate limit exceeded
- `501`: Operation is not implemented
- `503`: Upstream service is unavailable
- `504`: Upstream request timed out
- `default`: Error response

## Changes

- **2026-11-05** `fb5a0ecd3fc2`: 20 warning
  - added the new `FEATURE_TEMPORARILY_DISABLED` enum value to the `error/code` response property for the response status `401`
  - added the new `FEATURE_TEMPORARILY_DISABLED` enum value to the `error/code` response property for the response status `403`
  - added the new `FEATURE_TEMPORARILY_DISABLED` enum value to the `error/code` response property for the response status `404`
  - added the new `FEATURE_TEMPORARILY_DISABLED` enum value to the `error/code` response property for the response status `409`
  - …16 more

[Operation history](https://skmtc.dev/runta/apis/runta-public-rest-api/changes/v2/runtimes/:runtime_id/files/put.md)

---

[API](https://skmtc.dev/runta/apis/runta-public-rest-api.md) - [All operations](https://skmtc.dev/runta/apis/runta-public-rest-api/llms.txt) - [OpenAPI document](https://skmtc.dev/runta/apis/runta-public-rest-api/revisions/fb5a0ecd3fc2?raw)