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Automation guide

How to Automate Contract Review with LangChain

Extract key terms, flag non-standard clauses, compare against standard templates, and summarise risk points.

The problem

Legal review of routine contracts takes 2-4 hours per document. Most of that time is reading for standard issues a checklist could catch.

The outcome

Contracts arrive for legal review pre-annotated. Lawyers spend time on edge cases, not routine reading.

The tool

LangChain — Python/JS framework for building LLM applications.

How it works — step by step

  1. 1

    Contract PDF received via email or upload portal

  2. 2

    AI extracts key terms (parties, dates, payment, IP, termination)

  3. 3

    Clauses compared against approved template and flagged if non-standard

  4. 4

    Risk summary delivered to legal team with specific line citations

About LangChain

Python/JS framework for building LLM applications. Best for developers building custom AI agents and RAG pipelines.

Strengths

  • Full control
  • RAG pipelines
  • Agent frameworks
  • Vector store integrations

Pricing

Open source. LangSmith observability from $39/month.

Documentation ↗

Related guides

Want this in production?

Altor builds contract review automation for US B2B companies.

We don't hand off code and disappear. We connect to your live systems, ship to production in 3 weeks, and stay until the system delivers measurable impact. Contracts arrive for legal review pre-annotated. Lawyers spend time on edge cases, not routine reading.

Email us your workflow →