---
title: "Upload a file"
method: POST
path: "/api/v1/files/upload"
tags: ["Files"]
---

# Upload a file

`POST /api/v1/files/upload`

## Response `201`

Uploaded attachment

- AttachmentResponse
  - `id` string, required
  - `messageId` string, required
  - `pluginType` string, required
  - `filename` string, required
  - `mimeType` string, required
  - `size` number, required
  - `storageKey` string, required
  - `createdAt` string, required

## Other responses

- `401` — Invalid API key

## Changes

- **2026-04-02** `d05e1eeb4e5c` — 4 info
  - the endpoint scheme security `api-key` was added to the API
  - the endpoint scheme security `bearer` was removed from the API
  - api tag `Files` added
  - api tag `Agent API` removed

[Change history](https://skmtc.dev/placet-io/apis/placet-api/changes/api/v1/files/upload/post.md)

---

[API](https://skmtc.dev/placet-io/apis/placet-api.md) · [All operations](https://skmtc.dev/placet-io/apis/placet-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/placet-io/placet-api/revisions/3fb7657511b8/schema)