Other OpenAI-compatible clients

Three things to fill in

Parameter	GPT (a GPT group)	Claude (CC-Max group)
Base URL	https://2api.dev/v1	https://2api.dev
API Key	sk-your-key	sk-your-key
Model	Look it up with /v1/models	Look it up with /v1/models

The Claude group may only allow calls from the Claude Code client. If a third-party client reports only allows Claude Code clients, use the GPT group instead, or use Claude in Claude Code.

Code examples

Python · OpenAI SDK

from openai import OpenAI

client = OpenAI(base_url="https://2api.dev/v1", api_key="sk-your-key")
resp = client.chat.completions.create(
    model="model-name",
    messages=[{"role": "user", "content": "Hello"}],
)
print(resp.choices[0].message.content)

Python · Anthropic SDK

import anthropic

client = anthropic.Anthropic(base_url="https://2api.dev", api_key="sk-your-key")
msg = client.messages.create(
    model="model-name",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
)
print(msg.content[0].text)

curl

curl https://2api.dev/v1/chat/completions \
  -H "Authorization: Bearer sk-your-key" \
  -H "Content-Type: application/json" \
  -d '{"model": "model-name", "messages": [{"role": "user", "content": "Hello"}]}'

Cursor

In Cursor’s settings, turn on Override OpenAI Base URL and enter https://2api.dev/v1. Enter your key as the API key, then add the model name by hand. A few limits:

• Cursor sends requests from its own servers, so it only accepts a public address (2api.dev works).
• Don’t give a custom model the same name as one of Cursor’s built-in models.
• Agent mode sometimes reports Missing required parameter: 'messages'. This is a compatibility problem on Cursor’s side. If you hit this error with GPT in Cursor, install the Codex extension instead.