Files - Portkey Docs

Portkey supports Anthropic’s Files API (beta) for Claude Platform on AWS, enabling file upload, listing, retrieval, and deletion through the gateway. Uploaded files can be referenced in chat completions using file_id instead of re-uploading content each request.

The Files API is in beta and requires the files-api-2025-04-14 beta header. Portkey sets this automatically for file endpoints when using the SDK. For cURL requests, include the anthropic-beta: files-api-2025-04-14 header.

Upload a file

Python
NodeJS
REST
OpenAI Python
OpenAI NodeJS

from portkey_ai import Portkey

portkey = Portkey(
    api_key="PORTKEY_API_KEY",
    provider="@claude-platform-aws-provider"
)

file = portkey.files.create(
    purpose="assistants",
    file=open("document.pdf", "rb")
)

print(file.id)

import Portkey from 'portkey-ai';
import fs from 'fs';

const portkey = new Portkey({
    apiKey: "PORTKEY_API_KEY",
    provider: "@claude-platform-aws-provider"
});

const file = await portkey.files.create({
    purpose: "assistants",
    file: fs.createReadStream("document.pdf")
});

console.log(file.id);

curl -X POST https://api.portkey.ai/v1/files \
  -H "x-portkey-api-key: $PORTKEY_API_KEY" \
  -H "x-portkey-provider: @claude-platform-aws-provider" \
  -H "anthropic-beta: files-api-2025-04-14" \
  -F 'file=@"document.pdf"'

from openai import OpenAI
from portkey_ai import PORTKEY_GATEWAY_URL, createHeaders

client = OpenAI(
    api_key="PORTKEY_API_KEY",
    base_url=PORTKEY_GATEWAY_URL,
    default_headers=createHeaders(
        provider="@claude-platform-aws-provider",
        api_key="PORTKEY_API_KEY"
    )
)

file = client.files.create(
    purpose="assistants",
    file=open("document.pdf", "rb")
)

print(file.id)

import OpenAI from 'openai';
import { PORTKEY_GATEWAY_URL, createHeaders } from 'portkey-ai';
import fs from 'fs';

const client = new OpenAI({
    apiKey: "PORTKEY_API_KEY",
    baseURL: PORTKEY_GATEWAY_URL,
    defaultHeaders: createHeaders({
        provider: "@claude-platform-aws-provider",
        apiKey: "PORTKEY_API_KEY"
    })
});

const file = await client.files.create({
    purpose: "assistants",
    file: fs.createReadStream("document.pdf")
});

console.log(file.id);

Use uploaded files in chat completions

Once a file is uploaded, reference it by file_id in chat completions:

Python
NodeJS
REST

from portkey_ai import Portkey

portkey = Portkey(api_key="PORTKEY_API_KEY")

response = portkey.chat.completions.create(
    model="@claude-platform-aws-provider/claude-sonnet-4-6",
    max_tokens=1024,
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "Please summarize this document."},
            {"type": "file", "file": {"file_id": "<file_id>", "mime_type": "application/pdf"}}
        ]
    }]
)

print(response.choices[0].message.content)

import Portkey from 'portkey-ai';

const portkey = new Portkey({
    apiKey: "PORTKEY_API_KEY"
});

const response = await portkey.chat.completions.create({
    model: "@claude-platform-aws-provider/claude-sonnet-4-6",
    max_tokens: 1024,
    messages: [{
        role: "user",
        content: [
            { type: "text", text: "Please summarize this document." },
            { type: "file", file: { file_id: "<file_id>", mime_type: "application/pdf" } }
        ]
    }]
});

console.log(response.choices[0].message.content);

curl -X POST https://api.portkey.ai/v1/chat/completions \
  -H "x-portkey-api-key: $PORTKEY_API_KEY" \
  -H "anthropic-beta: files-api-2025-04-14" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "@claude-platform-aws-provider/claude-sonnet-4-6",
    "max_tokens": 1024,
    "messages": [
      {
        "role": "user",
        "content": [
          {"type": "text", "text": "Please summarize this document."},
          {"type": "file", "file": {"file_id": "<file_id>", "mime_type": "application/pdf"}}
        ]
      }
    ]
  }'

When using the SDK, the anthropic-beta header is set automatically for file endpoints. For chat completions with file references via cURL, include anthropic-beta: files-api-2025-04-14 in your request headers.

List files

Python
NodeJS
REST
OpenAI Python
OpenAI NodeJS

from portkey_ai import Portkey

portkey = Portkey(
    api_key="PORTKEY_API_KEY",
    provider="@claude-platform-aws-provider"
)

files = portkey.files.list()

print(files)

import Portkey from 'portkey-ai';

const portkey = new Portkey({
    apiKey: "PORTKEY_API_KEY",
    provider: "@claude-platform-aws-provider"
});

const files = await portkey.files.list();

console.log(files);

curl https://api.portkey.ai/v1/files \
  -H "x-portkey-api-key: $PORTKEY_API_KEY" \
  -H "x-portkey-provider: @claude-platform-aws-provider" \
  -H "anthropic-beta: files-api-2025-04-14"

from openai import OpenAI
from portkey_ai import PORTKEY_GATEWAY_URL, createHeaders

client = OpenAI(
    api_key="PORTKEY_API_KEY",
    base_url=PORTKEY_GATEWAY_URL,
    default_headers=createHeaders(
        provider="@claude-platform-aws-provider",
        api_key="PORTKEY_API_KEY"
    )
)

files = client.files.list()

print(files)

import OpenAI from 'openai';
import { PORTKEY_GATEWAY_URL, createHeaders } from 'portkey-ai';

const client = new OpenAI({
    apiKey: "PORTKEY_API_KEY",
    baseURL: PORTKEY_GATEWAY_URL,
    defaultHeaders: createHeaders({
        provider: "@claude-platform-aws-provider",
        apiKey: "PORTKEY_API_KEY"
    })
});

const files = await client.files.list();

console.log(files);

Get file

Python
NodeJS
REST
OpenAI Python
OpenAI NodeJS

from portkey_ai import Portkey

portkey = Portkey(
    api_key="PORTKEY_API_KEY",
    provider="@claude-platform-aws-provider"
)

file = portkey.files.retrieve(file_id="<file_id>")

print(file)

import Portkey from 'portkey-ai';

const portkey = new Portkey({
    apiKey: "PORTKEY_API_KEY",
    provider: "@claude-platform-aws-provider"
});

const file = await portkey.files.retrieve("<file_id>");

console.log(file);

curl https://api.portkey.ai/v1/files/<file_id> \
  -H "x-portkey-api-key: $PORTKEY_API_KEY" \
  -H "x-portkey-provider: @claude-platform-aws-provider" \
  -H "anthropic-beta: files-api-2025-04-14"

from openai import OpenAI
from portkey_ai import PORTKEY_GATEWAY_URL, createHeaders

client = OpenAI(
    api_key="PORTKEY_API_KEY",
    base_url=PORTKEY_GATEWAY_URL,
    default_headers=createHeaders(
        provider="@claude-platform-aws-provider",
        api_key="PORTKEY_API_KEY"
    )
)

file = client.files.retrieve("<file_id>")

print(file)

import OpenAI from 'openai';
import { PORTKEY_GATEWAY_URL, createHeaders } from 'portkey-ai';

const client = new OpenAI({
    apiKey: "PORTKEY_API_KEY",
    baseURL: PORTKEY_GATEWAY_URL,
    defaultHeaders: createHeaders({
        provider: "@claude-platform-aws-provider",
        apiKey: "PORTKEY_API_KEY"
    })
});

const file = await client.files.retrieve("<file_id>");

console.log(file);

Delete file

Python
NodeJS
REST
OpenAI Python
OpenAI NodeJS

from portkey_ai import Portkey

portkey = Portkey(
    api_key="PORTKEY_API_KEY",
    provider="@claude-platform-aws-provider"
)

response = portkey.files.delete(file_id="<file_id>")

print(response)

import Portkey from 'portkey-ai';

const portkey = new Portkey({
    apiKey: "PORTKEY_API_KEY",
    provider: "@claude-platform-aws-provider"
});

const response = await portkey.files.delete("<file_id>");

console.log(response);

curl -X DELETE https://api.portkey.ai/v1/files/<file_id> \
  -H "x-portkey-api-key: $PORTKEY_API_KEY" \
  -H "x-portkey-provider: @claude-platform-aws-provider" \
  -H "anthropic-beta: files-api-2025-04-14"

from openai import OpenAI
from portkey_ai import PORTKEY_GATEWAY_URL, createHeaders

client = OpenAI(
    api_key="PORTKEY_API_KEY",
    base_url=PORTKEY_GATEWAY_URL,
    default_headers=createHeaders(
        provider="@claude-platform-aws-provider",
        api_key="PORTKEY_API_KEY"
    )
)

response = client.files.delete("<file_id>")

print(response)

import OpenAI from 'openai';
import { PORTKEY_GATEWAY_URL, createHeaders } from 'portkey-ai';

const client = new OpenAI({
    apiKey: "PORTKEY_API_KEY",
    baseURL: PORTKEY_GATEWAY_URL,
    defaultHeaders: createHeaders({
        provider: "@claude-platform-aws-provider",
        apiKey: "PORTKEY_API_KEY"
    })
});

const response = await client.files.delete("<file_id>");

console.log(response);

Supported file types

Type	MIME types
PDF	`application/pdf`
Images	`image/jpeg`, `image/png`, `image/gif`, `image/webp`

Documentation Index

​Upload a file

​Use uploaded files in chat completions

​List files

​Get file

​Delete file

​Supported file types

​See Also

Upload a file

Use uploaded files in chat completions

List files

Get file

Delete file

Supported file types

See Also