OCP – Use your Claude Pro/Max subscription as an OpenAI-compatible API($0 extra)

github.com

3 pointsdtzp555-max4 comments

I got tired of paying for Claude Max and then paying again for API access in my dev tools. OCP is a single-file Node proxy that sits between your tools and the Claude CLI. It translates OpenAI chat/completions calls into claude -p invocations, so your existing subscription covers everything.

Works with anything that takes an OPENAI_BASE_URL — I use it with OpenClaw, OpenCode, and Cline running concurrently. Added a small CLI (ocp usage) that reads the rate-limit headers so you can check session/weekly utilization without opening the browser.

Setup is one command: node setup.mjs. Runs as a launchd/systemd daemon.

Nice using Calude to build tool to fool Claude :)

How does it decide which model to use per invocation

The caller specifies the model in the request body (just like a normal OpenAI API call). OCP maps it to the corresponding Claude CLI flag:

- claude-sonnet-4-6 → claude -p --model sonnet - claude-opus-4-6 → claude -p --model opus

If you don't specify, it defaults to Sonnet. There's no automatic model selection yet — that's coming in v4 with agent-aware routing (different agents get different models based on their role).

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