Rights and Bureaucracy · News · 🇧🇷 Brazil
Habeas corpus written only with AI and a letter from the STJ to the OAB
An STJ justice sent a letter to the OAB over a habeas corpus petition with AI-fabricated citations and no original argument.
- Profession
- Lawyer
- Tools
- IA generativa
- Source
- migalhas.com.br ↗
- Country
- 🇧🇷 Brazil
- Report date
- May 20, 2026
- Verified on
- October 24, 2026

What they did
The filing had eleven sections with case-law citations unrelated to the case, some of them fabricated.
How it went
Justice Rogerio Schietti denied the injunction and notified the OAB, stating that the lawyer did not write a single sentence of original argument. The account gives no numbers.
Good to know
Besides fines, there is disciplinary risk. Use AI to structure ideas, not to replace your own argumentation.
The prompt
I'm a lawyer. Based on the facts [summary without names], propose an outline of arguments in bullet points, indicating where I need to look for real precedents. Do not cite case law.
Replace what is in [brackets]. Prompt written by us from the account, not a literal copy of the source. Do not paste other people’s personal data (privacy laws such as LGPD and GDPR apply).
Summary in our own words. Results as stated in the original account; we have not tested or audited them. Read the source ↗ Found a mistake?
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