Legal is one of the highest-ROI departments for Claude deployment — and one of the most prompt-sensitive. The difference between a generic Claude prompt and a legal-specific one can mean the difference between a useful first draft and a response that misses the jurisdictional nuance your matter requires. This guide provides production-ready prompts refined across dozens of in-house and law firm deployments.
73%
Reduction in contract first-review time
2.4h
Average time saved per NDA review
89%
Legal teams report improved output quality with tailored prompts
The Legal System Prompt Foundation
Every legal team's Claude deployment should start with a role-specific system prompt. This establishes Claude's context and risk parameters for all subsequent interactions. Here's the foundation we use across in-house legal deployments:
System Prompt — Legal Assistant
Legal Team Base System Prompt
You are a legal assistant supporting the corporate legal team at [Company Name]. You assist with contract review, legal research, drafting, and compliance analysis.
Your approach:
- Flag legal risks clearly with RISK: HIGH / MEDIUM / LOW labels
- Note when matters require attorney review (use "ATTORNEY REVIEW REQUIRED")
- Apply {{jurisdiction}} law as the default unless otherwise specified
- Our standard risk tolerance is: {{risk_tolerance}}
- Key counterparties we frequently deal with: {{counterparty_types}}
Important: You provide legal information and analysis to assist attorneys. You do not provide legal advice. Always note that your output is for attorney review before reliance.
This system prompt, loaded into a Claude.ai Project, shapes all subsequent interactions. Attorneys can then ask more streamlined questions without restating context each time. See our legal department guide for how to structure the full Claude environment for a legal team.
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Contract Review
MSA First-Pass Review
Review this Master Service Agreement and produce a risk summary. We are the customer/buyer.
Structure your response as:
EXECUTIVE SUMMARY (3 sentences max)
HIGH-RISK CLAUSES:
[List each with: Clause section → Risk description → Recommended action]
UNUSUAL OR NON-STANDARD TERMS:
[Any terms deviating from market standard — note the deviation]
MISSING PROTECTIVE CLAUSES:
[Standard customer protections absent from this agreement]
FAVORABLE TERMS:
[Terms that benefit our position — briefly note]
PRIORITY REDLINES (top 3):
[The 3 changes we most need before signing]
Note: This is preliminary analysis for attorney review. Not legal advice.
<agreement>{{msa_text}}</agreement>
NDA Review
NDA One-Way Analysis
Analyze this NDA. We are the {{disclosing/receiving}} party.
Answer these specific questions:
1. Is this mutual or one-way? If one-way, who is protected?
2. What is the definition of "Confidential Information"? Is it appropriately scoped?
3. What are the exclusions from confidentiality? Are any missing?
4. What is the term? Is there a survival clause for obligations after termination?
5. Are there any non-compete or non-solicitation provisions? How broad?
6. What is the governing law and jurisdiction?
7. Are there any unusual provisions we should flag?
Overall assessment: ACCEPTABLE / ACCEPTABLE WITH MINOR CHANGES / REQUIRES SIGNIFICANT REVISION
<nda>{{nda_text}}</nda>
Legal Research Prompts
Legal Research
Issue Spotting and Background Research
You are a legal researcher. Provide background research on this legal issue to help an attorney prepare for a client matter.
Legal issue: {{issue}}
Jurisdiction: {{jurisdiction}}
Business context: {{context}}
Structure your response:
1. ISSUE OVERVIEW
Plain-language explanation of the legal issue
2. GOVERNING LEGAL FRAMEWORK
Relevant statutes, regulations, or common law principles
3. KEY CONSIDERATIONS
Factors that typically determine the outcome or shape the analysis
4. COMMON INDUSTRY PRACTICES
How companies typically approach this issue in practice
5. POTENTIAL ARGUMENTS
Arguments favoring our position vs. opposing position
6. AREAS OF UNCERTAINTY
Points where the law is unsettled or jurisdiction-dependent
7. RECOMMENDED NEXT STEPS
Specific research or actions the attorney should take
Disclaimer: This is background research to assist attorney analysis, not legal advice.
Free White Paper
Claude for Legal: Complete Department Guide
80+ prompts for legal teams covering every workflow from contract review to client communications. Includes system prompt templates and governance guidelines.
Download Free →Drafting Prompts
Document Drafting
Clause Drafting from Parameters
Draft a {{clause_type}} clause based on these parameters:
Our position: {{our_position}}
Counterparty's stated position: {{their_position}}
Acceptable compromise range: {{compromise_parameters}}
Key constraints: {{any_hard_limits}}
Governing law: {{jurisdiction}}
Draft three versions:
- AGGRESSIVE: Maximally favorable to our position
- BALANCED: Reasonable middle ground likely to be accepted
- CONSERVATIVE: Minimal protection but likely uncontesteddd
For each version, note: approximate risk level and likelihood of counterparty acceptance.
These are drafts for attorney review and modification. Not legal advice.
Policy Drafting
Internal Policy Template
Draft an internal company policy for: {{policy_topic}}
Company context: {{company_size}} company in {{industry}}
Jurisdiction: {{jurisdiction}}
Key regulatory concerns: {{relevant_regulations}}
Audience: {{employee_audience}}
Policy structure:
1. POLICY STATEMENT (purpose and scope)
2. WHO THIS APPLIES TO
3. REQUIREMENTS (numbered, specific obligations)
4. PROHIBITED ACTIVITIES (clear list)
5. EXCEPTIONS AND APPROVAL PROCESS
6. REPORTING VIOLATIONS
7. CONSEQUENCES FOR VIOLATION
8. REVIEW SCHEDULE
Tone: Professional, clear, actionable. Avoid legal jargon where plain language works. Flag areas where legal counsel should review before adoption.
Client Communication Prompts
Client Communication
Legal Update Letter
Draft a client update letter on this legal matter.
Matter summary: {{matter_summary}}
Key developments: {{recent_developments}}
Current status: {{current_status}}
Next steps required from client: {{client_actions}}
Next steps we will take: {{our_actions}}
Tone: {{formal/semi-formal}}
Format: Professional letter format.
Length: 300–500 words.
Avoid: Technical jargon, unnecessary hedging, vague timelines.
Include: Specific next steps with timeframes for each party.
This is a draft for attorney review before sending. Ensure privileged communication headers are added.
Compliance Analysis Prompts
Compliance Review
Regulatory Compliance Checklist
Analyze whether this business practice/document complies with {{regulation}} requirements.
Practice/Document: {{content}}
Our jurisdiction: {{jurisdiction}}
Our industry: {{industry}}
Review against these specific requirements:
{{compliance_checklist}}
For each requirement, assess:
COMPLIANT / NON-COMPLIANT / REQUIRES FURTHER REVIEW
For non-compliant items: Specify what change is required.
For items requiring further review: Specify what additional information or analysis is needed.
Overall compliance status: COMPLIANT / GAPS IDENTIFIED / SIGNIFICANT REMEDIATION REQUIRED
This analysis is preliminary. Final compliance determination requires attorney review.
Frequently Asked Questions
Is it safe to send contracts to Claude for review?
Under Claude Enterprise, your data is not used for training and is protected by enterprise-grade data handling agreements. For highly sensitive matters, your legal counsel should review your organization's data governance policies before sharing privileged content. Many law firms and corporate legal teams use Claude Enterprise for contract work under appropriate data controls.
Can Claude replace legal counsel for contract review?
No — and prompts should always include a disclaimer to that effect. Claude excels at first-pass review, flagging potential issues, and drafting options for attorney review. It dramatically reduces the time attorneys spend on routine review work, but final legal judgment on matters of risk, strategy, and compliance should always involve qualified counsel.
What legal tasks are Claude best suited for?
Claude performs best on: first-pass contract review and summarization, legal research synthesis, drafting standard agreements from templates, compliance checklist work, policy document drafting, and legal writing for non-contentious matters. Complex litigation strategy, novel legal arguments, and jurisdiction-specific advice require attorney involvement.
How do legal teams typically deploy Claude?
Most legal teams deploy Claude in three ways: Claude.ai Projects with a legal-role system prompt for ad-hoc attorney work, API integration into their contract management system for automated first-pass review, and Claude in their matter management platform for research assistance. Each use case benefits from department-specific prompt engineering.
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