APIMaster.ai
APIMaster.ai Docs
Quick startAPIMaster.aiMarketplace

Cursor API Key Setup — Custom OpenAI Base URL

Configure APIMaster.ai as an OpenAI-compatible provider in Cursor Settings for Claude, GPT-5.4, DeepSeek, and more.

Cursor integration (short)

For the full guide (GPT/Claude pitfalls, Codex & Claude Code extensions), see Cursor agent setup.

Quick steps (DeepSeek and custom models)

  1. Cursor Pro → Settings → Models.
  2. APIMaster API Key.
  3. Override OpenAI Base URL: https://apimaster.ai/v1
  4. Add model (e.g. deepseek-v4-pro), enable, and select in chat.

GPT / Claude

Built-in GPT and Claude names conflict with third-party keys. Install Codex and Claude Code extensions and follow Codex and Claude Code config.

See full Cursor tutorial.