Build Arguments That Withstand Any Challenge.
War-game your entire legal strategy before you step into the courtroom. Simulate opposing counsel's best arguments, identify vulnerabilities in your position, and generate pre-built rebuttals for every anticipated challenge.
300%
Faster trial prep
Verified performance across active legal teams
Ask it anything.
A few examples of the questions Legal Sparrow answers every day — across practice areas, jurisdictions, and complexity.
Simulate opposing counsel's strongest arguments against our Article 9 perfection defence.
What are the most likely bench questions on our standard of review argument?
Stress-test our entire breach of fiduciary duty claim ahead of trial next month.
Generate pre-built rebuttals to anticipated obviousness arguments in our patent defence.
What vulnerabilities exist in our wrongful termination defence and how do we address them?
Simulate the strongest MAC clause arguments the buyer could raise to walk from this deal.
What It Does
Opposing Counsel Simulation
AI adopts the opposing side's strongest possible position and generates all foreseeable counterarguments and potential motions.
Vulnerability Scoring
Each argument in your strategy receives a vulnerability score, prioritizing where additional evidence or authority is needed.
Rebuttal Generation
Generates pre-written rebuttal language for every identified counterargument, ready to customise and deploy.
Precedent Anchoring
Anchors every generated argument to actual case law and statutes, ensuring legal validity and citability in any brief.
Three Steps to Results
Input Your Legal Position
Describe your client's position, the legal theory, and the key facts supporting your case in natural language.
AI Stress-Tests Your Strategy
Our engine generates all opposing arguments, identifies weaknesses, and scores the strength of your entire position.
Receive Your Battle-Ready Brief
Download a complete argument map with rebuttals, supporting precedents, and suggested additional discovery targets.
Frequently
Asked
Everything you need to know about Argument Builder Agent before you start your free trial.
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