POST
/
v1
/
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": "file"
}
Files API 允许您上传和管理文件以与 Claude API 一起使用，而无需在每次请求时重新上传内容。有关 Files API 的更多信息，请参阅文件开发者指南。
Files API 目前处于测试阶段。要使用 Files API，您需要包含测试功能标头：anthropic-beta: files-api-2025-04-14。请通过我们的反馈表单联系我们，分享您使用 Files API 的体验。

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
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
​
id
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
enum<string>
required

Object type.

For files, this is always "file".

Available options:
TitleConst
Typefile
​
downloadable
boolean
default:false

Whether the file can be downloaded.