AI API reselling isn't inherently illegal, but the devil's in the implementation details. Let's break down what actually triggers legal consequences:

First, the "37-day detention" claim is technically impossible under administrative law (max 20 days). Anything beyond that means criminal prosecution, which is a public case requiring specific violations.

The critical phrase: "obtained APIs through illegal technical means." If targeting foreign AI providers, consequences are typically minimal. But hitting domestic Chinese AI companies? That's where it escalates fast.

Here's what crosses the line into criminal territory under China's Computer Information System laws:

1. Stealing API keys, cookies, tokens, or credential pools

2. Exploiting vulnerabilities to bypass authentication, rate limits, or paywalls

3. Reverse-engineering app/web interfaces to circumvent official clients

4. Abusing educational/enterprise accounts, trial quotas, promo codes, or fraudulent payment methods

5. Script-based mass registration to farm free tier credits

6. Cracking encryption parameters, signature schemes, or anti-fraud systems of AI platforms

7. Using illegal proxy chains to evade platform restrictions before reselling access

All of these constitute "Illegal Acquisition of Computer Information System Data" or "Illegal Control of Computer Information Systems" under Chinese criminal law.

The core issue: API reselling as a technical pattern isn't illegal per se. What matters is:

- API source legitimacy

- Authorization scope

- Business licensing

- Content safety compliance

- Data protection adherence

- Payment processing and tax obligations

Any single failure point in this chain can trigger legal action. The "middleman" business model only works when every layer is legally clean.