Claude

Get Your API Key

Go to the API Keys page to create your API key.

API Base URL

https://tokenoff.com/api

Usage

Claude models are accessed via the /v1/messages endpoint, fully compatible with the Anthropic Messages API.

curl

curl https://tokenoff.com/api/v1/messages \
  -H "Authorization: Bearer your_api_key_here" \
  -H "Content-Type: application/json" \
  -H "anthropic-version: 2023-06-01" \
  -d '{
      "model": "claude-sonnet-4-6",
      "max_tokens": 1024,
      "messages": [
          {"role": "user", "content": "Hello"}
      ]
  }'

Python

import anthropic

client = anthropic.Anthropic(
  api_key="your_api_key_here",
  base_url="https://tokenoff.com/api",
)

message = client.messages.create(
  model="claude-sonnet-4-6",
  max_tokens=1024,
  messages=[
      {"role": "user", "content": "Hello"}
  ],
)

print(message.content)

TypeScript

import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  apiKey: "your_api_key_here",
  baseURL: "https://tokenoff.com/api",
});

const message = await client.messages.create({
  model: "claude-sonnet-4-6",
  max_tokens: 1024,
  messages: [
      { role: "user", content: "Hello" },
  ],
});

console.log(message.content);

Using with Claude Code

Claude Code CLI

export ANTHROPIC_BASE_URL=https://tokenoff.com/api
export ANTHROPIC_AUTH_TOKEN=<your_api_key_here>

claude

VS Code

"claudeCode.environmentVariables": [
    {
        "name": "ANTHROPIC_BASE_URL",
        "value": "https://tokenoff.com/api",
    },
    {
        "name": "ANTHROPIC_AUTH_TOKEN",
        "value": "your_api_key_here",
    },
],

Supported Models