LegalAgent Open-Sourced Its Professional Legal Prompt Collection
LegalAgent has open-sourced the legal prompt collection that we use in practice.
The repository includes 101 prompts in total: 84 contract review checklists and 17 complaint-drafting prompts. The prompts are based on Japanese law, available in both Japanese and English, and released under the MIT License.
Ready to use as Claude Code / Codex skills
The prompts can be read as Markdown files, but they are also packaged so they can be used as Claude Code / Codex skills.
The intended workflow is to copy the full skills/ folder into your skills directory, then specify the skill you want to use for each matter. You can also let the AI agent choose the appropriate skill based on the contract type and task.
For example, you can ask the agent to:
- review an NDA from the recipient's side
- review a service agreement from the client side
- draft a complaint for a loan repayment claim
- refer to the English version of the prompt instead of the Japanese version
Installing the full skill set helps reduce the need to search for the right contract type each time. At LegalAgent, we believe it is important to make recurring legal review and drafting perspectives reusable through AI agents.
Designed to be customized over time
The prompts are intentionally general-purpose so that they can be used across a broad range of matters. In actual work, they should be customized to your organization's templates, internal rules, risk tolerance, and comment style.
Because the repository is open source, we welcome Issues and Pull Requests for typo fixes, inaccuracies, legal updates, practical improvements, and requests for additional contract or claim types.
Our goal is not to keep this as a closed LegalAgent-only prompt collection, but to keep improving it into something that is genuinely useful for corporate legal work and legal practice.
Important notes
This prompt collection is provided for general informational purposes only and does not constitute legal advice. Outputs should be reviewed by a qualified lawyer or other appropriate professional before being used in a real matter.
Please also be careful when entering contracts, draft complaints, client information, or other legal materials into AI services. You should check your organization's rules, the terms of the AI service you use, and any confidentiality obligations owed to clients or counterparties.
LegalAgent will continue to publish and improve practical prompts and workflows as we work toward making AI agents genuinely useful in legal practice.