146 lines
3.9 KiB
Markdown
146 lines
3.9 KiB
Markdown
---
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summary: "Use Claude Max/Pro subscription as an OpenAI-compatible API endpoint"
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read_when:
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- You want to use Claude Max subscription with OpenAI-compatible tools
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- You want a local API server that wraps Claude Code CLI
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- You want to save money by using subscription instead of API keys
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---
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# Claude Max API Proxy
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**claude-max-api-proxy** is a community tool that exposes your Claude Max/Pro subscription as an OpenAI-compatible API endpoint. This allows you to use your subscription with any tool that supports the OpenAI API format.
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## Why Use This?
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| Approach | Cost | Best For |
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|----------|------|----------|
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| Anthropic API | Pay per token (~$15/M input, $75/M output for Opus) | Production apps, high volume |
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| Claude Max subscription | $200/month flat | Personal use, development, unlimited usage |
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If you have a Claude Max subscription and want to use it with OpenAI-compatible tools, this proxy can save you significant money.
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## How It Works
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```
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Your App → claude-max-api-proxy → Claude Code CLI → Anthropic (via subscription)
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(OpenAI format) (converts format) (uses your login)
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```
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The proxy:
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1. Accepts OpenAI-format requests at `http://localhost:3456/v1/chat/completions`
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2. Converts them to Claude Code CLI commands
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3. Returns responses in OpenAI format (streaming supported)
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## Installation
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```bash
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# Requires Node.js 20+ and Claude Code CLI
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npm install -g claude-max-api-proxy
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# Verify Claude CLI is authenticated
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claude --version
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```
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## Usage
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### Start the server
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```bash
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claude-max-api
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# Server runs at http://localhost:3456
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```
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### Test it
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```bash
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# Health check
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curl http://localhost:3456/health
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# List models
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curl http://localhost:3456/v1/models
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# Chat completion
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curl http://localhost:3456/v1/chat/completions \
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-H "Content-Type: application/json" \
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-d '{
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"model": "claude-opus-4",
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"messages": [{"role": "user", "content": "Hello!"}]
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}'
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```
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### With Moltbot
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You can point Moltbot at the proxy as a custom OpenAI-compatible endpoint:
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```json5
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{
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env: {
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OPENAI_API_KEY: "not-needed",
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OPENAI_BASE_URL: "http://localhost:3456/v1"
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},
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agents: {
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defaults: {
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model: { primary: "openai/claude-opus-4" }
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}
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}
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}
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```
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## Available Models
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| Model ID | Maps To |
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|----------|---------|
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| `claude-opus-4` | Claude Opus 4 |
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| `claude-sonnet-4` | Claude Sonnet 4 |
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| `claude-haiku-4` | Claude Haiku 4 |
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## Auto-Start on macOS
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Create a LaunchAgent to run the proxy automatically:
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```bash
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cat > ~/Library/LaunchAgents/com.claude-max-api.plist << 'EOF'
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>Label</key>
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<string>com.claude-max-api</string>
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<key>RunAtLoad</key>
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<true/>
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<key>KeepAlive</key>
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<true/>
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<key>ProgramArguments</key>
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<array>
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<string>/usr/local/bin/node</string>
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<string>/usr/local/lib/node_modules/claude-max-api-proxy/dist/server/standalone.js</string>
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</array>
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<key>EnvironmentVariables</key>
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<dict>
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<key>PATH</key>
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<string>/usr/local/bin:/opt/homebrew/bin:~/.local/bin:/usr/bin:/bin</string>
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</dict>
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</dict>
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</plist>
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EOF
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launchctl bootstrap gui/$(id -u) ~/Library/LaunchAgents/com.claude-max-api.plist
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```
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## Links
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- **npm:** https://www.npmjs.com/package/claude-max-api-proxy
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- **GitHub:** https://github.com/atalovesyou/claude-max-api-proxy
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- **Issues:** https://github.com/atalovesyou/claude-max-api-proxy/issues
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## Notes
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- This is a **community tool**, not officially supported by Anthropic or Moltbot
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- Requires an active Claude Max/Pro subscription with Claude Code CLI authenticated
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- The proxy runs locally and does not send data to any third-party servers
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- Streaming responses are fully supported
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## See Also
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- [Anthropic provider](/providers/anthropic) - Native Moltbot integration with Claude setup-token or API keys
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- [OpenAI provider](/providers/openai) - For OpenAI/Codex subscriptions
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