Before we start

Over the past two years, "I want to use Claude Code / Codex" has gone from install a package, paste a key to something that genuinely requires a technical decision.

The same handful of questions keeps coming up in the community, and the people asking are rarely beginners:

• "I bought API credit. Why does the web app still ask me to log in?"
• "Same account. It ran fine yesterday, today it just spins. What changed?"
• "Why do relay providers make such a fuss about IPs? Can't I just plug in a more expensive proxy myself?"
• "Hosting providers say 'once assigned, the environment does not change.' Isn't that awfully conservative? Wouldn't swapping to a better one be faster?"
• "A long task ran for two minutes and died halfway. Why is retrying it actually worse?"

These look unrelated. They all point at the same thing: most people treat "account" as an indivisible atom, when it is really three kinds of credential + two levels of quota window + a set of identity-consistency constraints stacked on top of each other. Until you separate those layers, none of the questions above has an answer.

This article does not teach you how to game anything, and it contains no adversarial recipes. It does exactly one thing: make the engineering constraints explicit — why things are the way they are, and where each approach hits its ceiling under those constraints.

Roughly 10,000 words, with five explanatory diagrams. By the end you should be able to answer all five questions yourself, and know which path is yours.

Introduction: The Gray-Market Feast Behind the LLM Boom

Since ChatGPT ignited the global AI wave, large language models (LLMs) have not only reshaped productivity, but also spawned countless new business models centered on APIs and compute power. Yet wherever high-value compute resources exist, gray and black markets follow.

Preface: Survival Rules in the Dark Forest

February 14, 2026. As fireworks lit up the sky for Valentine's Day, many developers' screens displayed only a cold line of red text: "Your account has been disabled...".

This is not the first time, nor will it be the last. From the "registration difficulties" of 2023 to the "payment risk controls" of 2024, and the "great purge" of 2025, the cat-and-mouse game between Claude (Anthropic) and its users has evolved into a sophisticated "Algorithmic War".

Many people ask me: "Why was I banned even though I used a native residential IP?" or "Why was I refunded immediately after recharging?".
The answer is simple: Your disguise, in the eyes of AI, looks like a clumsy clown.

In the eyes of Anthropic's risk control team, you are not just an IP address. You are a string of TLS handshake characteristics, a TCP window size value, a tiny jitter of mouse movement, a specific hash value rendered by browser Canvas. They scrutinize every request like looking at bacteria under a microscope.

To break this asymmetric transparency, I decided to write this "White Paper". This is not to teach you how to do evil, but to help you retain the right to connect to the world in an era of increasingly strict digital borders.

In the software development lifecycle (SDLC), security remains one of the hardest problems to solve. Static Application Security Testing (SAST) and Dynamic Application Security Testing (DAST) have been widely adopted for years, yet overwhelming false positives and weak coverage of complex business-logic flaws continue to drain both security and engineering teams.

Anthropic recently launched the highly discussed Claude Max plan. It is often called Claude Max 20x or the $200 plan. For developers who rely heavily on AI for coding, architecture design, and complex reasoning, this plan unlocks a powerful workflow tool: Claude Code.