Beta › Files
Upload File
POST /v1/files
Upload File
Headers
"anthropic-beta": optional array of AnthropicBetaOptional header to specify the beta version(s) you want to use.
string"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 42 more"message-batches-2024-09-24""prompt-caching-2024-07-31""computer-use-2024-10-22""computer-use-2025-01-24""pdfs-2024-09-25""token-counting-2024-11-01""token-efficient-tools-2025-02-19""output-128k-2025-02-19""files-api-2025-04-14""mcp-client-2025-04-04""mcp-client-2025-11-20""dev-full-thinking-2025-05-14""interleaved-thinking-2025-05-14""code-execution-2025-05-22""extended-cache-ttl-2025-04-11""context-1m-2025-08-07""context-management-2025-06-27""model-context-window-exceeded-2025-08-26""skills-2025-10-02""fast-mode-2026-02-01""output-300k-2026-03-24""user-profiles-2026-03-24""user-profiles-2026-08-18""user-profiles-2026-09-04""advisor-tool-2026-03-01""managed-agents-2026-04-01""cache-diagnosis-2026-04-07""dreaming-2026-04-21""thinking-token-count-2026-05-13""server-side-fallback-2026-06-01""server-side-fallback-2026-07-01""fallback-credit-2026-06-01""fallback-credit-2026-07-01""agent-memory-2026-07-22""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""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"
"anthropic-workspace-id": optional string
Body parameters (form-data)
file: stringThe file to upload. Only the final path component of the part's
filenameis kept; an absent or emptyfilenameis replaced withunnamedplus the extension for the file's storedmime_type, when known.format: binary
expires_in_seconds: optional numberSeconds 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 objecttype: "file"Object type.
For files, this is always
"file".id: stringUnique object identifier.
The format and length of IDs may change over time.
created_at: stringRFC 3339 datetime string representing when the file was created.
format: date-time
filename: stringOriginal filename of the uploaded file.
maxLength: 500, minLength: 1
mime_type: stringMIME type of the file.
maxLength: 255, minLength: 1
size_bytes: numberSize of the file in bytes.
minimum: 0
downloadable: optional booleanWhether the file can be downloaded.
default: false
expires_at: optional string or nullRFC 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 nullThe scope of this file, indicating the context in which it was created (e.g., a session).
type: "session"The type of scope (e.g.,
"session").id: stringThe ID of the scoping resource (e.g., the session ID).
Example
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)
{
"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"
}
}List Files
GET /v1/files
List Files
Query parameters
ids: optional array of stringRestrict the result set to Files whose
idis in this list. At most 100 entries (after de-duplication). Mutually exclusive withpageandlimit. When supplied, the response is always a single page (next_pageis null). IDs that do not resolve to a visible File — including deleted Files — are silently omitted.limit: optional numberNumber of items to return per page.
Defaults to
20. Ranges from1to1000.default: 20, maximum: 1000, minimum: 1
page: optional stringOpaque page cursor returned in a prior list response's
next_page. Prefixedpage_.scope_id: optional stringFilter by scope ID. Only returns files associated with the specified scope (e.g., a session ID).
Headers
"anthropic-beta": optional array of AnthropicBetaOptional header to specify the beta version(s) you want to use.
string"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 42 more"message-batches-2024-09-24""prompt-caching-2024-07-31""computer-use-2024-10-22""computer-use-2025-01-24""pdfs-2024-09-25""token-counting-2024-11-01""token-efficient-tools-2025-02-19""output-128k-2025-02-19""files-api-2025-04-14""mcp-client-2025-04-04""mcp-client-2025-11-20""dev-full-thinking-2025-05-14""interleaved-thinking-2025-05-14""code-execution-2025-05-22""extended-cache-ttl-2025-04-11""context-1m-2025-08-07""context-management-2025-06-27""model-context-window-exceeded-2025-08-26""skills-2025-10-02""fast-mode-2026-02-01""output-300k-2026-03-24""user-profiles-2026-03-24""user-profiles-2026-08-18""user-profiles-2026-09-04""advisor-tool-2026-03-01""managed-agents-2026-04-01""cache-diagnosis-2026-04-07""dreaming-2026-04-21""thinking-token-count-2026-05-13""server-side-fallback-2026-06-01""server-side-fallback-2026-07-01""fallback-credit-2026-06-01""fallback-credit-2026-07-01""agent-memory-2026-07-22""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""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"
"anthropic-workspace-id": optional string
Returns
data: array of BetaFileMetadataList of file metadata objects.
type: "file"Object type.
For files, this is always
"file".id: stringUnique object identifier.
The format and length of IDs may change over time.
created_at: stringRFC 3339 datetime string representing when the file was created.
format: date-time
filename: stringOriginal filename of the uploaded file.
maxLength: 500, minLength: 1
mime_type: stringMIME type of the file.
maxLength: 255, minLength: 1
size_bytes: numberSize of the file in bytes.
minimum: 0
downloadable: optional booleanWhether the file can be downloaded.
default: false
expires_at: optional string or nullRFC 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 nullThe scope of this file, indicating the context in which it was created (e.g., a session).
type: "session"The type of scope (e.g.,
"session").id: stringThe ID of the scoping resource (e.g., the session ID).
next_page: optional string or nullOpaque cursor for the next page. Supply as
?page=to fetch the next page; null when there are no more results.
Example
curl https://api.anthropic.com/v1/files \
-H 'anthropic-version: 2023-06-01' \
-H "X-Api-Key: $ANTHROPIC_API_KEY"Response (200)
{
"data": [
{
"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"
}
}
],
"next_page": "next_page"
}Download File
GET /v1/files/\{file_id\}/content
Download File
Path parameters
file_id: stringID of the File.
Headers
"anthropic-beta": optional array of AnthropicBetaOptional header to specify the beta version(s) you want to use.
string"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 42 more"message-batches-2024-09-24""prompt-caching-2024-07-31""computer-use-2024-10-22""computer-use-2025-01-24""pdfs-2024-09-25""token-counting-2024-11-01""token-efficient-tools-2025-02-19""output-128k-2025-02-19""files-api-2025-04-14""mcp-client-2025-04-04""mcp-client-2025-11-20""dev-full-thinking-2025-05-14""interleaved-thinking-2025-05-14""code-execution-2025-05-22""extended-cache-ttl-2025-04-11""context-1m-2025-08-07""context-management-2025-06-27""model-context-window-exceeded-2025-08-26""skills-2025-10-02""fast-mode-2026-02-01""output-300k-2026-03-24""user-profiles-2026-03-24""user-profiles-2026-08-18""user-profiles-2026-09-04""advisor-tool-2026-03-01""managed-agents-2026-04-01""cache-diagnosis-2026-04-07""dreaming-2026-04-21""thinking-token-count-2026-05-13""server-side-fallback-2026-06-01""server-side-fallback-2026-07-01""fallback-credit-2026-06-01""fallback-credit-2026-07-01""agent-memory-2026-07-22""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""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"
"anthropic-workspace-id": optional string
Example
curl https://api.anthropic.com/v1/files/$FILE_ID/content \
-H 'anthropic-version: 2023-06-01' \
-H "X-Api-Key: $ANTHROPIC_API_KEY"Get File Metadata
GET /v1/files/\{file_id\}
Get File Metadata
Path parameters
file_id: stringID of the File.
Headers
"anthropic-beta": optional array of AnthropicBetaOptional header to specify the beta version(s) you want to use.
string"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 42 more"message-batches-2024-09-24""prompt-caching-2024-07-31""computer-use-2024-10-22""computer-use-2025-01-24""pdfs-2024-09-25""token-counting-2024-11-01""token-efficient-tools-2025-02-19""output-128k-2025-02-19""files-api-2025-04-14""mcp-client-2025-04-04""mcp-client-2025-11-20""dev-full-thinking-2025-05-14""interleaved-thinking-2025-05-14""code-execution-2025-05-22""extended-cache-ttl-2025-04-11""context-1m-2025-08-07""context-management-2025-06-27""model-context-window-exceeded-2025-08-26""skills-2025-10-02""fast-mode-2026-02-01""output-300k-2026-03-24""user-profiles-2026-03-24""user-profiles-2026-08-18""user-profiles-2026-09-04""advisor-tool-2026-03-01""managed-agents-2026-04-01""cache-diagnosis-2026-04-07""dreaming-2026-04-21""thinking-token-count-2026-05-13""server-side-fallback-2026-06-01""server-side-fallback-2026-07-01""fallback-credit-2026-06-01""fallback-credit-2026-07-01""agent-memory-2026-07-22""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""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"
"anthropic-workspace-id": optional string
Returns
BetaFileMetadata objecttype: "file"Object type.
For files, this is always
"file".id: stringUnique object identifier.
The format and length of IDs may change over time.
created_at: stringRFC 3339 datetime string representing when the file was created.
format: date-time
filename: stringOriginal filename of the uploaded file.
maxLength: 500, minLength: 1
mime_type: stringMIME type of the file.
maxLength: 255, minLength: 1
size_bytes: numberSize of the file in bytes.
minimum: 0
downloadable: optional booleanWhether the file can be downloaded.
default: false
expires_at: optional string or nullRFC 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 nullThe scope of this file, indicating the context in which it was created (e.g., a session).
type: "session"The type of scope (e.g.,
"session").id: stringThe ID of the scoping resource (e.g., the session ID).
Example
curl https://api.anthropic.com/v1/files/$FILE_ID \
-H 'anthropic-version: 2023-06-01' \
-H "X-Api-Key: $ANTHROPIC_API_KEY"Response (200)
{
"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"
}
}Delete File
DELETE /v1/files/\{file_id\}
Delete File
Path parameters
file_id: stringID of the File.
Headers
"anthropic-beta": optional array of AnthropicBetaOptional header to specify the beta version(s) you want to use.
string"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 42 more"message-batches-2024-09-24""prompt-caching-2024-07-31""computer-use-2024-10-22""computer-use-2025-01-24""pdfs-2024-09-25""token-counting-2024-11-01""token-efficient-tools-2025-02-19""output-128k-2025-02-19""files-api-2025-04-14""mcp-client-2025-04-04""mcp-client-2025-11-20""dev-full-thinking-2025-05-14""interleaved-thinking-2025-05-14""code-execution-2025-05-22""extended-cache-ttl-2025-04-11""context-1m-2025-08-07""context-management-2025-06-27""model-context-window-exceeded-2025-08-26""skills-2025-10-02""fast-mode-2026-02-01""output-300k-2026-03-24""user-profiles-2026-03-24""user-profiles-2026-08-18""user-profiles-2026-09-04""advisor-tool-2026-03-01""managed-agents-2026-04-01""cache-diagnosis-2026-04-07""dreaming-2026-04-21""thinking-token-count-2026-05-13""server-side-fallback-2026-06-01""server-side-fallback-2026-07-01""fallback-credit-2026-06-01""fallback-credit-2026-07-01""agent-memory-2026-07-22""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""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"
"anthropic-workspace-id": optional string
Returns
BetaDeletedFile objecttype: optional "file_deleted"Deleted object type.
For file deletion, this is always
"file_deleted".default: file_deleted
id: stringID of the deleted file.
Example
curl https://api.anthropic.com/v1/files/$FILE_ID \
-X DELETE \
-H 'anthropic-version: 2023-06-01' \
-H "X-Api-Key: $ANTHROPIC_API_KEY"Response (200)
{
"id": "file_011CNha8iCJcU1wXNR6q4V8w",
"type": "file_deleted"
}