Step-by-Step Claude Code Subscription-Free Tutorial: Use via Relay API Without Login, Zero Barrier Free Trial

Want to use Claude Code, but as soon as you open the terminal, it prompts you to log in to a Claude account and also requires a subscription. For those who only use it occasionally, or want to try it locally first before deciding to commit, this barrier is indeed a bit annoying.

Last weekend I had a task — temporarily fixing the call logic of a Python script and running several rounds of debugging. I didn't want to open Pro for a one-and-a-half-hour job, nor did I want to struggle with the official API and unpredictable token costs. I tried the subscription-free version made by clawdfree, and the whole process was more straightforward than I imagined.

Below are the steps I actually followed. The scenario is simple: I have a Mac with Node.js installed, and I need to temporarily use Claude Code to help me analyze a piece of buggy Python code.

Setting up a Subscription-Free Claude Code Environment with clawdfree

The key is here — clawdfree is directly based on Claude Code v2.1.88, removing the account login requirement. You don't need to register on the Claude official website or bind a credit card. The only thing you need is a working API key, preferably one that supports relay lines, so that latency when accessing from China will be much lower.

My own workflow:

Step 1: Get the relay URL and API key. I used an existing relay API I already had (many third-party API platforms support Anthropic's endpoints), and noted down the base URL. If you don't have one, many services offering claude code free api relay can quickly generate a trial key.

Step 2: Pull the modified client of clawdfree. Simply find the clawdfree/claude-code repository on GitHub and follow the README instructions to install. Essentially it's an npm package with replaced authentication logic. After installation, you can directly type claude in the terminal and it works, without popping up a login screen.

Step 3: Configure environment variables. Export two variables in the terminal:

• ANTHROPIC_API_KEY - enter your relay key
• ANTHROPIC_BASE_URL - enter the relay API address

Then run claude, and it starts normally. No subscription check, no account binding.

Actual Test: Fixing a Python Loop Bug

I threw in a piece of Python with an off-by-one error and asked it to help me locate it. After starting, Claude Code directly read the current working directory without asking me to log in. Response speed was decent; each conversation returned in about 2-3 seconds, with no significant difference compared to the official subscription version.

Because it uses a relay line, the model itself hasn't changed — it's still Claude's Sonnet or Opus (depending on your relay configuration). The quality of replies I got was consistent with what I used in the Playground before. It can generate diffs normally, execute terminal commands directly, and view file contents. The core capabilities are fully retained.

Practical Impressions and Notes

Here are a few actual situations I encountered during use:

First, the stability of the relay API directly affects the experience. I tried two different relay providers, one of which occasionally returned 502 errors during peak evening hours. If you plan to use it for a long time, it's recommended to choose a relay solution with load balancing, or at least prepare a backup key. clawdfree itself does not restrict your API source, so it offers a high degree of freedom.

Second, what is missing compared to the official version. Because the account system has been removed, the clawdfree version of Claude Code does not sync your conversation history to the cloud. Each new session starts clean, and you need to manually save important conversations. This is not a big problem for daily development debugging, but if you want to accumulate conversation context over the long term, the official subscription version is more convenient.

Third, target audience. I think this solution is best for two types of people: those who occasionally use Claude Code for code review or rapid prototyping and don't want to pay a subscription fee for low-frequency use; and those who want to deeply experience Claude Code's workflow first to decide if it's worth paying for. If you heavily rely on Claude Code for project management or long-term maintenance every day, the multi-session persistence and project management features of the official subscription version will be more convenient.

Summary

From my actual experience, the subscription-free Claude Code built with clawdfree, combined with a good relay API, is fully capable of handling daily development assistance tasks. Its barrier is much lower than the official version — no need to go through the subscription process, nor to solve overseas payment issues. For people like me who occasionally need to use it temporarily, this solution is straightforward and sufficient.