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How to Write a Contract with Claude

Writing a contract can seem intimidating, especially without legal training. Claude, Anthropic's AI assistant, allows you to create structured and professional draft contracts in minutes. Whether for a service contract, a confidentiality agreement, or a lease, Claude guides you step by step in drafting essential clauses. This tool does not replace a lawyer for complex situations, but it is an excellent starting point to produce a clear, comprehensive document tailored to your needs. In this tutorial, you will learn how to provide the right context to Claude, structure your contract, and refine each clause to obtain a usable result.

Prerequisites

  • 1.A Claude account (free or Pro) on claude.ai
  • 2.Key contract information: parties involved, purpose, duration, financial conditions
  • 3.A clear idea of the desired contract type (service, NDA, lease, partnership, etc.)
  • 4.Knowledge of specific legal obligations relevant to your industry or jurisdiction

Steps

1

Define the context and type of contract

Start by precisely explaining to Claude the type of contract you need. The more context you provide (industry, jurisdiction, parties involved), the more relevant the result will be. Specify whether it is a B2B or B2C contract, the applicable legislation, and the main stakes.

I wish to draft a service contract between my company [YOUR_COMPANY_NAME], a simplified joint stock company registered in France, and a freelance service provider. The contract covers a mission of [MISSION_DESCRIPTION] for a duration of [DURATION]. The applicable legislation is French law. Can you propose a complete structure with all essential clauses?

Tip: Always mention the applicable jurisdiction (French, Belgian, Swiss law, etc.) as legal obligations vary considerably from one country to another.
2

Generate the first complete draft

Ask Claude to write the entire contract including all standard clauses: identification of parties, purpose, duration, mutual obligations, compensation, confidentiality, intellectual property, termination, and dispute resolution. Claude will produce a structured document that you can then refine.

Now write the complete contract including the following clauses: identification of parties, preamble, purpose of the contract, duration and renewal, obligations of the service provider, obligations of the client, financial conditions (amount: [X]€ ex VAT, payment terms 30 days), confidentiality clause, intellectual property (assignment of rights to the client), non-solicitation clause, early termination, force majeure, applicable law and competent jurisdiction. Use professional but accessible legal language.

Tip: Provide amounts, deadlines, and specific conditions at this stage to avoid unnecessary back-and-forth.
3

Refine sensitive clauses

Certain clauses require special attention because they protect your interests in case of a dispute. Ask Claude to strengthen or clarify liability, late penalty, intellectual property, and termination clauses. You can also ask to add specific clauses relevant to your situation.

Can you strengthen the following clauses of the contract:

  1. Add a late delivery penalty clause (1% of the amount per day of delay, capped at 10%)
  2. Specify that the assignment of intellectual property is total and definitive, for all media and all territories
  3. Add a reversibility clause with an obligation to transfer skills at the end of the mission
  4. Strengthen the confidentiality clause with a duration of 3 years after the end of the contract
Tip: Feel free to ask Claude to explain each clause in simple language to ensure you fully understand your commitments.
4

Check compliance and omissions

Ask Claude to perform a critical review of the contract to identify missing clauses, inconsistencies, or potential legal risks. This step is crucial to ensure the document is balanced and fairly protects both parties.

Reread the contract you just drafted and perform a critical analysis:

  1. Are there missing clauses that would be recommended for this type of contract under French law?
  2. Are the clauses balanced between the two parties or are there obvious imbalances?
  3. Are there ambiguous formulations that could cause problems in case of a dispute?
  4. Is the contract compliant with applicable provisions of the Civil Code and Commercial Code?
    Propose necessary corrections.
Tip: Ask Claude to check compliance with recent regulations (GDPR for personal data, duty of vigilance law, etc.).
5

Finalize and format the document

Once the content is validated, ask Claude to produce the final version of the contract with professional formatting: article numbering, structured layout, signature blocks, and appendices if necessary. You will get a document ready to be copied into your word processor for printing and signing.

Produce the final version of the contract with the following formatting:

  • Centered title in uppercase
  • Numbered articles (Article 1, Article 2, etc.) with numbered subsections (1.1, 1.2, etc.)
  • Preamble with the "BETWEEN" and "AND" to identify the parties
  • Signature block at the end of the document with the mention "Made in two original copies, at [CITY], on [DATE]" followed by signature lines for each party
  • Mention "Read and approved" and "Initialed ne varietur"
  • Add an appendix listing the expected deliverables with their deadlines
Tip: Export the result by asking Claude to format it in Markdown, which facilitates conversion to Word or PDF.

Common mistakes to avoid

  • ✗Using the contract generated by Claude as is without having it reviewed by a legal professional, especially for large amounts or complex situations
  • ✗Not specifying the applicable jurisdiction, leading to generic clauses inapplicable in your country
  • ✗Forgetting to mention specific information (amounts, deadlines, names of parties) in the prompt, forcing Claude to use vague placeholders
  • ✗Neglecting personal data protection clauses (GDPR) when the contract involves data processing
  • ✗Copying a contract generated for one situation and reusing it in a different context without adaptation

FAQ

Is a contract written by Claude legally valid?
Claude produces draft contracts that can serve as a solid foundation, but it does not replace a lawyer. A contract is legally valid if it meets the substantive conditions (consent, capacity, lawful object) and the form required by law. It is highly recommended to have any contract validated by a legal professional before signing, especially for significant financial commitments.
Can Claude write contracts in specialized fields (real estate, employment, IT)?
Yes, Claude can write drafts for most types of contracts: commercial leases, employment contracts, general terms and conditions of sale, software license agreements, NDAs, shareholder agreements, etc. To get a relevant result, specify the field, applicable regulations, and specifics of your situation. The more detailed the context, the more adapted the contract will be.
How to adapt a contract generated by Claude to my specific situation?
Proceed iteratively. After the first draft, ask Claude to modify specific clauses, add or remove them. You can paste existing clauses from your old contracts and ask Claude to integrate or improve them. Use conversation tracking to gradually refine until you get a document that exactly matches your needs.

Related tutorials

How to write a professional email with ClaudeHow to summarize a legal document with ClaudeHow to write general terms and conditions of sale with ChatGPT

How to use this prompt

  1. Copy the prompt with the button above.
  2. Paste it into ChatGPT, Claude or your favorite AI assistant.
  3. Replace the bracketed variables with your details, then refine the result.

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