ファイルを作成

cURL

curl -X POST "https://api.anthropic.com/v1/files" \
     -H "x-api-key: $ANTHROPIC_API_KEY" \
     -H "anthropic-version: 2023-06-01" \
     -H "anthropic-beta: files-api-2025-04-14" \
     -F "file=@/path/to/document.pdf"

{
  "created_at": "2023-11-07T05:31:56Z",
  "downloadable": false,
  "filename": "<string>",
  "id": "<string>",
  "mime_type": "<string>",
  "size_bytes": 1,
  "type": "<string>"
}

POST

files

cURL

curl -X POST "https://api.anthropic.com/v1/files" \
     -H "x-api-key: $ANTHROPIC_API_KEY" \
     -H "anthropic-version: 2023-06-01" \
     -H "anthropic-beta: files-api-2025-04-14" \
     -F "file=@/path/to/document.pdf"

{
  "created_at": "2023-11-07T05:31:56Z",
  "downloadable": false,
  "filename": "<string>",
  "id": "<string>",
  "mime_type": "<string>",
  "size_bytes": 1,
  "type": "<string>"
}

Files APIを使用すると、各リクエストでコンテンツを再アップロードすることなく、Claude APIで使用するファイルをアップロードおよび管理できます。Files APIの詳細については、ファイルの開発者ガイドを参照してください。

Files APIは現在ベータ版です。Files APIを使用するには、ベータ機能ヘッダーを含める必要があります：anthropic-beta: files-api-2025-04-14。Files APIでの体験を共有するには、フィードバックフォームからお問い合わせください。

Headers

anthropic-beta

string[]

Optional header to specify the beta version(s) you want to use.

To use multiple betas, use a comma separated list like beta1,beta2 or specify the header multiple times for each beta.

anthropic-version

string

required

The version of the Claude API you want to use.

Read more about versioning and our version history here.

x-api-key

string

required

Your unique API key for authentication.

This key is required in the header of all API requests, to authenticate your account and access Anthropic's services. Get your API key through the Console. Each key is scoped to a Workspace.

Body

multipart/form-data

file

required

The file to upload

Response

Successful Response

created_at

string<date-time>

required

RFC 3339 datetime string representing when the file was created.

filename

string

required

Original filename of the uploaded file.

Required string length: 1 - 500

string

required

Unique object identifier.

The format and length of IDs may change over time.

mime_type

string

required

MIME type of the file.

Required string length: 1 - 255

size_bytes

integer

required

Size of the file in bytes.

Required range: x >= 0

type

string

required

Object type.

For files, this is always "file".

Allowed value: "file"

downloadable

boolean

default:false

Whether the file can be downloaded.