---
title: "Upload Session File"
method: POST
path: "/sessions/{session_id}/files"
tags: ["sessions", "files"]
---

# Upload Session File

`POST /sessions/{session_id}/files`

## Request

- Base URL: `https://api.notte.cc` (the document declares no server; this is the origin it was published from)
- URL: `https://api.notte.cc/sessions/{session_id}/files`
- Auth: OAuth 2
  - Password
  - Token URL: `token`

## Path parameters

- `session_id` string, required

## Headers

- `x-notte-request-origin` string, nullable
- `x-notte-sdk-version` string, nullable

## Request body `multipart/form-data`

- BodyUploadSessionFileSessionsSessionIdFilesPost
  - `file` string, binary, required

## Response `201`

Successful Response

- SessionFile
  - `id` string, required
  - `session_id` string, required
  - `filename` string, required
  - `mime_type` string, required
  - `size` integer, required
  - `checksum` string, required
  - `created_at` string, date-time, required
  - `expires_at` string, date-time, required
  - `source` 'user_upload' | 'session_download', required

## Other responses

- `422`: Validation Error

## Changes

- **2026-09-04** `7903fe373a1c`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/notte/apis/notte-api/changes/sessions/:session_id/files/post.md)

---

[API](https://skmtc.dev/notte/apis/notte-api.md) - [All operations](https://skmtc.dev/notte/apis/notte-api/llms.txt) - [OpenAPI document](https://skmtc.dev/notte/apis/notte-api/revisions/d56fcbf39bc9?raw)