Anthropic Files API
The Files API lets you upload and manage files for reuse across Messages, Batches, code execution, and Managed Agents without re-uploading content. 500 MB request limit; supports PDFs, images, Office documents, and plain text.
Anthropic Files API is one of 24 APIs that Anthropic publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include AI, Artificial Intelligence, and Files. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.
This API exposes 5 operations across 3 paths, and defines 6 schemas. It is described by OpenAPI 3.1.0, at version 1.0.0.
Requests are made against a single base URL, https://api.anthropic.com/v1.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Anthropic Files API declares
1 security scheme
for authenticating requests.
An API key is passed in the header as x-api-key (AdminApiKeyAuth).
By default, every request must be authenticated.
AdminApiKeyAuth— Your Admin API key for authentication (starts with sk-ant-admin...).
Paths & Operations 5
Across 3 paths, the API surfaces 5 operations — 1 DELETE, 3 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.
Upload, retrieve, and manage files
Schemas 6
The contract defines 6 schemas that model the data the API accepts and returns. The most detailed are File (7 properties), FileList (4 properties), Error (2 properties), FileDeletedResponse (2 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Anthropic 12
Other APIs Anthropic publishes across the network.
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