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# Upload File¶
¶
**POST** `/v1/files`¶
¶
Upload File¶
¶
## Headers¶
¶
- `"anthropic-beta": optional array of AnthropicBeta`¶
¶
Optional header to specify the beta version(s) you want to use.¶
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- `string`¶
¶
- `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`¶
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- `"message-batches-2024-09-24"`¶
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- `"prompt-caching-2024-07-31"`¶
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- `"computer-use-2024-10-22"`¶
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- `"computer-use-2025-01-24"`¶
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- `"pdfs-2024-09-25"`¶
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- `"token-counting-2024-11-01"`¶
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- `"token-efficient-tools-2025-02-19"`¶
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- `"output-128k-2025-02-19"`¶
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- `"files-api-2025-04-14"`¶
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- `"mcp-client-2025-04-04"`¶
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- `"mcp-client-2025-11-20"`¶
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- `"dev-full-thinking-2025-05-14"`¶
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- `"interleaved-thinking-2025-05-14"`¶
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- `"code-execution-2025-05-22"`¶
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- `"extended-cache-ttl-2025-04-11"`¶
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- `"context-1m-2025-08-07"`¶
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- `"context-management-2025-06-27"`¶
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- `"model-context-window-exceeded-2025-08-26"`¶
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- `"skills-2025-10-02"`¶
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- `"fast-mode-2026-02-01"`¶
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- `"output-300k-2026-03-24"`¶
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- `"user-profiles-2026-03-24"`¶
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- `"user-profiles-2026-08-18"`¶
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- `"advisor-tool-2026-03-01"`¶
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- `"managed-agents-2026-04-01"`¶
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- `"cache-diagnosis-2026-04-07"`¶
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- `"dreaming-2026-04-21"`¶
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- `"thinking-token-count-2026-05-13"`¶
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- `"server-side-fallback-2026-06-01"`¶
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- `"server-side-fallback-2026-07-01"`¶
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- `"fallback-credit-2026-06-01"`¶
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- `"fallback-credit-2026-07-01"`¶
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- `"agent-memory-2026-07-22"`¶
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- `"mid-conversation-tool-changes-2026-07-01"`¶
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- `"compact-2026-01-12"`¶
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- `"computer-use-2025-11-24"`¶
¶
- `"mcp-tunnels-2026-06-22"`¶
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- `"structured-outputs-2025-11-13"`¶
¶
- `"task-budgets-2026-03-13"`¶
¶
- `"thinking-display-updates-2026-08-18"`¶
¶
- `"ce-user-management-2026-07-13"`¶
¶
## Body parameters (form-data)¶
¶
- `file: string`¶
¶
The file to upload¶
¶
format: binary¶
¶
- `expires_in_seconds: optional number`¶
¶
Seconds from upload until the file expires and its bytes become permanently unavailable. Must be between 3600 (one hour) and 7776000 (ninety days).¶
¶
minimum: 3600, maximum: 7776000¶
¶
## Returns¶
¶
- `BetaFileMetadata object`¶
¶
- `id: string`¶
¶
Unique object identifier.¶
¶
The format and length of IDs may change over time.¶
¶
- `created_at: string`¶
¶
RFC 3339 datetime string representing when the file was created.¶
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format: date-time¶
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- `filename: string`¶
¶
Original filename of the uploaded file.¶
¶
maxLength: 500, minLength: 1¶
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- `mime_type: string`¶
¶
MIME type of the file.¶
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maxLength: 255, minLength: 1¶
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- `size_bytes: number`¶
¶
Size of the file in bytes.¶
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minimum: 0¶
¶
- `type: "file"`¶
¶
Object type.¶
¶
For files, this is always `"file"`.¶
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- `downloadable: optional boolean`¶
¶
Whether the file can be downloaded.¶
¶
default: false¶
¶
- `expires_at: optional string or null`¶
¶
RFC 3339 datetime string representing when the file will expire and become unavailable for download. Null if the file does not expire. For files uploaded with `expires_in_seconds`, this is the upload time plus that value.¶
¶
format: date-time¶
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- `scope: optional BetaFileScope or null`¶
¶
The scope of this file, indicating the context in which it was created (e.g., a session).¶
¶
- `id: string`¶
¶
The ID of the scoping resource (e.g., the session ID).¶
¶
- `type: "session"`¶
¶
The type of scope (e.g., `"session"`).¶
¶
## Example¶
¶
```bash¶
curl https://api.anthropic.com/v1/files \¶
-H 'Content-Type: multipart/form-data' \¶
-H 'anthropic-version: 2023-06-01' \¶
-H 'anthropic-beta: files-api-2025-04-14' \¶
-H "X-Api-Key: $ANTHROPIC_API_KEY" \¶
-F 'file=@/path/to/file'¶
```¶
¶
### Response (200)¶
¶
```json¶
{¶
"id": "file_011CNha8iCJcU1wXNR6q4V8w",¶
"created_at": "2025-04-15T18:37:24.100435Z",¶
"filename": "document.pdf",¶
"mime_type": "application/pdf",¶
"size_bytes": 102400,¶
"type": "file",¶
"downloadable": false,¶
"expires_at": "2025-05-15T18:37:24.100435Z",¶
"scope": {¶
"id": "id",¶
"type": "session"¶
}¶
}¶
```¶
Unified Diff
--- a/api/beta/files/upload.md
+++ b/api/beta/files/upload.md
@@ -104,6 +104,12 @@
format: binary
+- `expires_in_seconds: optional number`
+
+ Seconds from upload until the file expires and its bytes become permanently unavailable. Must be between 3600 (one hour) and 7776000 (ninety days).
+
+ minimum: 3600, maximum: 7776000
+
## Returns
- `BetaFileMetadata object`
@@ -149,6 +155,12 @@
Whether the file can be downloaded.
default: false
+
+ - `expires_at: optional string or null`
+
+ RFC 3339 datetime string representing when the file will expire and become unavailable for download. Null if the file does not expire. For files uploaded with `expires_in_seconds`, this is the upload time plus that value.
+
+ format: date-time
- `scope: optional BetaFileScope or null`
@@ -168,7 +180,6 @@
curl https://api.anthropic.com/v1/files \
-H 'Content-Type: multipart/form-data' \
-H 'anthropic-version: 2023-06-01' \
- -H 'anthropic-beta: files-api-2025-04-14' \
-H "X-Api-Key: $ANTHROPIC_API_KEY" \
-F 'file=@/path/to/file'
```
@@ -184,6 +195,7 @@
"size_bytes": 102400,
"type": "file",
"downloadable": false,
+ "expires_at": "2025-05-15T18:37:24.100435Z",
"scope": {
"id": "id",
"type": "session"