LexDye finds them. Your AI reviews them. You don't have to.
The LexDye Definition Tracker reads every line of your agreement and lists every defined term that is missing, duplicated, unused, used too early or used in lower case, in seconds and on your own computer. Then hand its report to your AI. Your AI works through every finding and tells you what should be fixed. Want to see for yourself? Every finding can be verified in LexDye. Using an AI agent? It can run LexDye for you, start to finish.
| Definitions found | 372 | |
| ✕ | Used before their definition | 4 |
| ✕ | Duplicate definitions | 3 |
| ✕ | Unused definitions | 5 |
| ✕ | Also used in lower case | 9 |
| ✕ | Capitalised terms not defined | 14 |
A careful reader samples. LexDye doesn't. It builds the complete list of definitions and then checks every capitalised word in the document against it, the same way every time.
Capitalised terms that are used but never defined, including typos and variants like Key Personel or Service-Level Credit.
Terms defined more than once, such as a Change of Control with a 50% test in one clause and 30% in another.
Definitions that are never used again, often a sign that a term was renamed somewhere else.
Terms that appear before the clause that defines them, with glossary pointers set aside.
Defined terms that turn up in lower case, where the drafter may or may not have meant the defined meaning.
LexDye errs on the side of showing a term rather than hiding it. Your AI sorts out what matters, and the Smart Filter sets the obvious noise aside.
The LexDye Definition Tracker is an extremely useful software tool for contract drafting. It has proven to be indispensable to our legal department when drafting all kinds of commercial agreements and licenses.
LexDye reads the .docx directly and keeps automatic clause numbers like 1.1 and (a). Pasting from Word works too.
Seconds for most agreements, a minute or two for a 100-page document. A progress bar shows each step.
Copy one report into your AI. Your AI works through every finding and tells you what should be fixed. To check any finding yourself, click through it in LexDye with every use highlighted.
LexDye is designed to work with your AI, not instead of it. We gave a 121-page master services agreement with 28 planted defined-term errors to a leading chat AI, and to LexDye.
Deterministic and exhaustive. 372 definitions found, every capitalised term checked, the same result every time. It cannot be confidently wrong about whether a term is defined.
It reads for meaning: overlapping definitions, wrong cross-references, scope that doesn't fit. Give it LexDye's report and it sorts every finding into Fix, Consider or Ignore.
"Copy report for AI" works with ChatGPT, Claude, Wordsmith AI, GC AI, or any other assistant. One report, with instructions and quotes for every finding.Your document is analysed locally. You decide what, if anything, goes to your AI.
Add these instructions to your AI once. Whenever you ask it to check the defined terms in an agreement, it will ask for a LexDye report, work through every entry, quote the clause for each finding and lead with its key recommendations. The instructions only point to this page; LexDye itself stays on your computer.
A ready-made skill. In Claude's settings, open the Skills section and upload the file as it is.
Download Claude skill (.zip)Plain instructions. Paste them into a ChatGPT Project or custom GPT, a Copilot agent or notebook, a Gemini Gem, or your legal AI's custom instructions.
Download AI instructions (.txt)AI agents that work on your computer, such as Codex, Claude Code and Claude Cowork, can run LexDye on your Word file, either from its command-line version or in the browser, and work through the report on their own. Ask your agent to check the defined terms in an agreement and get back a reviewed list of what should be fixed. Every finding can still be verified in LexDye.
LexDye began as desktop software that never needed the internet. The web version keeps that promise: the analysis happens entirely inside your browser.
IT Department Questions? Contact UsLike a dye, our work makes visible what is easy to miss: the drafting error, the undefined term, the question nobody thought to ask.
LexDye makes lawyers sharper. We build software, legal education and professional training for the parts of practice no shortcut covers: reading closely, drafting precisely and exercising judgment under pressure.
The Definition Tracker is where LexDye began, as a desktop tool trusted by in-house legal departments. Today it is free for everyone, alongside LexDye Interactive →, our interactive law firm experience. Founded in 2012 and based in New Haven, Connecticut.
An interactive law firm experience. Partners message you through a secure portal, test your judgment against the clock and tell you exactly what they think of your answer. The skills it teaches are the ones AI can't replace.
Learn more →Free. Nothing to install. LexDye finds the problems; your AI reviews them.
Open the Definition Tracker →