---¶
title: Upload File¶
url: https://platform.claude.com/docs/en/api/beta/files/upload¶
---¶
¶
# 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`¶
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- `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 45 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"`¶
¶
- `"skills-2025-10-02"`¶
¶
- `"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"`¶
¶
- `"user-profiles-2026-09-04"`¶
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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"`¶
¶
- `"dreaming-2026-04-21"`¶
¶
- `"thinking-token-count-2026-05-13"`¶
¶
- `"server-side-fallback-2026-06-01"`¶
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- `"server-side-fallback-2026-07-01"`¶
¶
- `"fallback-credit-2026-06-01"`¶
¶
- `"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"`¶
¶
- `"compact-2026-01-12"`¶
¶
- `"computer-use-2025-11-24"`¶
¶
- `"mcp-tunnels-2026-06-22"`¶
¶
- `"structured-outputs-2025-11-13"`¶
¶
- `"task-budgets-2026-03-13"`¶
¶
- `"thinking-display-updates-2026-08-18"`¶
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- `"ce-user-management-2026-07-13"`¶
¶
- `"mid-conversation-output-config-2026-07-01"`¶
¶
- `"thinking-binding-controls-2026-08-01"`¶
¶
- `"mid-conversation-system-clear-at-2026-08-21"`¶
¶
- `"compact-2026-09-04"`¶
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- `"inline-tools-2026-09-15"`¶
¶
- `"mcp-client-2026-09-15"`¶
¶
- `"anthropic-workspace-id": optional string`¶
¶
Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).¶
¶
Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.¶
¶
## Body parameters (form-data)¶
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- `file: string`¶
¶
The file to upload. Only the final path component of the part's `filename` is kept; an absent or empty `filename` is replaced with `unnamed` plus the extension for the file's stored `mime_type`, when known.¶
¶
format: binary¶
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- `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).¶
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minimum: 3600, maximum: 7776000¶
¶
## Returns¶
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- `BetaFileMetadata object`¶
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- `type: "file"`¶
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Object type.¶
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For files, this is always `"file"`.¶
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- `id: string`¶
¶
Unique object identifier.¶
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The format and length of IDs may change over time.¶
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- `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.¶
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maxinLength: 5001, minaxLength: 1500¶
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- `mime_type: string`¶
¶
MIME type of the file.¶
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maxinLength: 2551, minaxLength: 1255¶
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- `size_bytes: number`¶
¶
Size of the file in bytes.¶
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minimum: 0¶
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- `downloadable: optional boolean`¶
¶
Whether the file can be downloaded.¶
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default: false¶
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- `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.¶
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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).¶
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- `type: "session"`¶
¶
The type of scope (e.g., `"session"`).¶
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- `id: string`¶
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The ID of the scoping resource (e.g., the session ID).¶
¶
## Example¶
¶
```bash¶
curl https://api.anthropic.com/v1/files \¶
-H 'Content-Type: multipart/form-data' \¶
-H 'anthropic-version: 2023-06-01' \¶
-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"¶
}¶
}¶
```¶