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TTAPI’s Claude-compatible base URL is https://cc.ttapi.io. Once your local environment variables are set, Claude Code will send requests through TTAPI.

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1. Install

If claude is still not found after installation, reopen your terminal so the updated PATH can take effect.

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2. Verify

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3. Configure TTAPI

Set the variables for the current session:
To persist them for the current Windows user:

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4. Start

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Required environment variables

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Troubleshooting

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claude command not found

  • Reopen the terminal
  • Confirm the install path is on PATH
  • Run claude --version again

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Auth or request error after launch

  • Check that ANTHROPIC_BASE_URL is set to https://cc.ttapi.io
  • Check that ANTHROPIC_API_KEY contains a valid TTAPI key
  • Reopen the terminal to reload environment variables

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Can I still use the default Anthropic setup?

Yes. But if you want Claude Code traffic to go through TTAPI, both ANTHROPIC_BASE_URL and ANTHROPIC_API_KEY must point to the TTAPI-compatible endpoint and your TTAPI key.

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What models does Claude Code support?

Claude Code is not a single fixed model. Instead, it dynamically routes across multiple Claude models. Commonly used models include:
  • Claude Opus (high-performance reasoning and complex coding)
  • Claude Sonnet (balanced performance and cost for general development)
  • Claude Haiku (lightweight and fast for simple tasks)
Click to view the model list and pricing details
Last modified on April 30, 2026