Prompt Engineering: The Skill Every Lawyer Needs in the Age of AI

Electra Japonas
Chief Legal Officer

AI is transforming legal work. Contract review – once a slow, manual grind – is now faster, smarter, and more scalable thanks to tools that integrate directly into your workflows. But here’s the truth most people overlook:

AI contract review is only as good as the prompt you give it.

While everyone talks about “AI tools” and “automation,” prompt engineering remains the most under-discussed (and arguably the most important) skill lawyers can learn today. It’s the foundation that enables AI to actually deliver useful, context-aware insights. Without it, AI is just another black box.

How AI Contract Review Actually Works

Let’s clear something up. AI doesn’t “just know” what makes a good contract. It doesn’t automatically understand nuance, risk allocation, or business context. It needs instruction – deliberate, structured instruction.

In the context of contract review, that instruction comes in the form of prompts. Think of prompts as programmable rules. You’re telling the AI, clause by clause, what to look for, what to flag, and how to interpret patterns or inconsistencies.

Let’s say you’re reviewing a SaaS agreement. Your prompt might ask the AI to identify whether the contract contains an uncapped liability clause for data breaches. Or you might prompt it to assess whether the termination for convenience clause is one-sided and creates an unfair commercial imbalance. These aren’t generic questions – they’re specific legal triggers that require interpretation, analysis, and judgment.

And when you’re using a tool like Law Insider’s AI Word Add-in, these prompts become the rules of your contract playbook. The AI isn’t working from guesswork. It’s executing your logic, at scale, directly inside your drafting environment. It’s like training a team of junior lawyers who always follow your exact reasoning.

The better your prompts, the more aligned the AI is with your risk tolerance, negotiation posture, and commercial objectives. That’s why prompting is not just a tech input – it’s a legal skill.

Why Prompting Matters More Than the Tool Itself

There’s no shortage of AI tools on the market today. But many of them fall flat because they rely on pre-set logic or generic use cases that don’t reflect the complexity of real-world contracts. You can’t rely solely on a generic “analyze” button and expect the AI to capture the nuances that matter most to your deal. While powerful out of the box, the tool becomes exponentially more valuable when you guide it – when you tell it what you care about and why. 

That’s why prompt engineering becomes the pivotal layer – the part that takes a powerful tool and turns it into something personal, strategic, and aligned with your intent. This is where prompt engineering changes the game. By crafting specific, nuanced prompts, you inject your legal judgment into the AI’s process. You’re not just reviewing contracts faster – you’re reviewing them on your terms. You decide what good looks like. You define what “market standard” means in your context. You determine the red flags worth escalating.

In that sense, the AI isn’t replacing lawyers. It’s reflecting them – acting as an extension of your expertise. But only if you give it the right instructions. And those instructions come through prompts. This is why we say the prompt is the playbook.

When done well, prompting allows AI to adapt to different industries, jurisdictions, deal sizes, or regulatory frameworks. It allows you to set standards across teams, ensure consistency in negotiations, and reduce human error. In short, prompting transforms AI from a generalist tool into a specialist assistant.

The Good News? Lawyers Are Already Built for This

Prompt engineering might sound like a technical discipline, but it plays directly to the strengths lawyers already have. Precision in language. Pattern recognition. Risk spotting. Logical structuring. Lawyers are trained to think in frameworks, rules, and exceptions and that’s exactly how you build good prompts.

Think about how you already analyze a contract. You look for the presence or absence of key clauses. You interpret how those clauses align with your client’s position. You assess whether the language is clear, enforceable, and commercially reasonable. Prompt engineering simply translates that process into structured guidance for AI.

You don’t need to learn to code. You don’t need a background in data science. You just need to take the reasoning you already use and express it in a clear, AI-readable format. 

Prompts in the context of AI contract review tools are just advanced legal instructions – and lawyers write those all day. So while the term “prompt engineering” might be new, the underlying skill set isn’t.

What About Junior Lawyers? Won’t They Miss Out?

This is the fear we hear most: If AI is doing the contract review, how will junior lawyers learn? Isn’t this cutting out the foundational experience?

It’s a valid concern, but one rooted in the assumption that contract review will stay the same. It won’t. And that’s a good thing.

The future of legal training isn’t about blindly marking up documents. It’s about understanding how to structure reasoning, guide technology, and manage complexity at scale. Prompt engineering teaches junior lawyers how to think, not just how to react. It forces clarity. It demands intent.

In fact, junior lawyers who get good at this early will likely leapfrog those who don’t. They’ll be able to systematize their thinking, create repeatable workflows, and operate more like legal engineers than traditional back-office reviewers. That’s a competitive edge.

And let’s not forget: juniors still need to write the prompts. They still need to understand what an indemnity is, how to structure a liability cap and what level of risk their client can tolerate. So no, this doesn’t replace training. It modernizes it. 

This Isn’t Something to Fear. It’s Something to Master.

Contracting is changing, but that’s nothing new. What’s new is the acceleration. AI isn’t coming for legal work. It’s reshaping how that work gets done. And prompt engineering is how we stay in control of that shift.

This is a language game. It always has been. And lawyers who master the new language of AI – prompting – will be the ones who thrive. Not because they gave up their skills, but because they translated them into a new medium.

This is not the end of lawyering. It’s the beginning of a smarter, sharper, more scalable way of practicing. So let’s stop whispering about prompting like it’s a niche technical detail. It’s not. It’s the core of modern legal work. And it’s time we treated it that way.

🌟 Ready to put prompt engineering into practice?
Install our AI Contract Review Add-in for Word and start reviewing contracts directly in Microsoft Word—using prompt-based playbooks built for legal teams.

 

Tags: AI, prompt engineering

Contributors

Electra Japonas
Chief Legal Officer

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