anthropic-proxy

Name: anthropic-proxy
Author: maxnowack

Proxy server that converts Anthropic API requests to OpenAI format and sends it to OpenRouter. It's used to use Claude Code with OpenRouter instead of the Anthropic API

414

Stars

Forks

JavaScript

Language

8/23/2026

Added

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⚠️ Third-Party Software Notice

This skill is third-party open-source software developed and hosted independently on GitHub. SkillTip is an informational directory and does not control or maintain the underlying repository. Any security checks displayed are automated and limited in scope. Review the source code before installing.

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API Integration

Installation

Add to your Claude Code skills directory:

# Add to your Claude Code skills
git clone https://github.com/maxnowack/anthropic-proxy

Getting Started

Guides for using skills like anthropic-proxy.

Security Report

Verified

Last scanned: —

{
  "status": "PASSED",
  "issues": []
}

README.md

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

Contributions

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

Frequently Asked Questions

What is anthropic-proxy?⌄

anthropic-proxy is an open-source api integration skill for AI coding assistants such as Claude Code, Codex CLI, and ChatGPT, built by maxnowack. Proxy server that converts Anthropic API requests to OpenAI format and sends it to OpenRouter. It's used to use Claude Code with OpenRouter instead of the Anthropic API. It has 414 GitHub stars.

Is anthropic-proxy safe to use?⌄

anthropic-proxy returned warnings in SkillsLLM's automated security scan. It has no critical vulnerabilities, but review the flagged issues in the Security Report section before adding it to your workflow.

How do I install anthropic-proxy?⌄

Clone the repository with "git clone https://github.com/maxnowack/anthropic-proxy" and add it to your Claude Code skills directory (see the Installation section above).

What programming language is anthropic-proxy written in?⌄

anthropic-proxy is primarily written in JavaScript. It is open-source under maxnowack on GitHub, so you can review or fork the full source.

Are there alternatives to anthropic-proxy?⌄

Yes. SkillsLLM lists many other API Integration skills you can browse and compare side by side. Open the API Integration category from the badge at the top of this page, or use the Related Skills and comparison links further down to weigh anthropic-proxy against similar tools.

Comments (0)

by farion1231

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