maxnowack

Anthropic Proxy — Code Quality skill for Claude Code

Code Quality community intermediate

A proxy server that converts Anthropic API requests to OpenAI format and sends them to OpenRouter, used to use Claude Code with OpenRouter.

How to install Anthropic Proxy

This entry records only its repository, not the path inside it, so there is no exact command to give. Open maxnowack/anthropic-proxy and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Anthropic Proxy does

A proxy server that transforms Anthropic API requests to OpenAI format and sends it to openrouter.ai. This enables you to use Anthropic's API format while connecting to OpenAI-compatible endpoints.

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README

anthropic-proxy

A proxy server that transforms Anthropic API requests to OpenAI format and sends it to openrouter.ai. This enables you to use Anthropic's API format while connecting to OpenAI-compatible endpoints.

Usage

With this command, you can start the proxy server with your OpenRouter API key on port 3000:

OPENROUTER_API_KEY=your-api-key npx anthropic-proxy

Environment variables:

  • OPENROUTER_API_KEY: Your OpenRouter API key (required when using OpenRouter)
  • ANTHROPIC_PROXY_BASE_URL: Custom base URL for the transformed OpenAI-format message (default: openrouter.ai)
  • PORT: The port the proxy server should listen on (default: 3000)
  • REASONING_MODEL: The reasoning model to use (default: google/gemini-2.0-pro-exp-02-05:free)
  • COMPLETION_MODEL: The completion model to use (default: google/gemini-2.0-pro-exp-02-05:free)
  • DEBUG: Set to 1 to enable debug logging

Note: When `ANTHROPIC_PROXY_BASE_URL` is set to a custom URL, the `OPENROUTER_API_KEY` is not required.

Claude Code

To use the proxy server as a backend for Claude Code, you have to set the `ANTHROPIC_BASE_URL` to the URL of the proxy server:

ANTHROPIC_BASE_URL=http://0.0.0.0:3000 claude

License

Licensed under MIT license. Copyright (c) 2025 Max Nowack

Contributions

Contributions are welcome. Please open issues and/or file Pull Requests.

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