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Legacy Code Summary

An onboarding-friendly summary of a legacy file — what it does, who calls it, where the dragons are.

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A concise summary of legacy code in a format suitable for new joiners, covering purpose, key functions, and potential issues.

Who it's for

  • New software engineers joining a project
  • DevOps engineers reviewing legacy systems
  • Technical leads onboarding new team members
  • Code reviewers assessing legacy code quality

Use cases

  • Onboarding new developers to a legacy project
  • Reviewing unfamiliar codebases for potential issues
  • Preparing for a code review of a legacy system
  • Assessing technical debt in a legacy codebase
  • Introducing new team members to a complex codebase

FAQ

what is included in the legacy code summary

The summary includes the purpose of the code, key functions or exports, external callers if visible, and up to three potential issues or 'dragons'. It is designed to be concise and easy to understand for new joiners.

how do i provide the code for summarisation

You can either provide the file path or paste the code directly into the textarea. This allows for flexibility in how you share the code with Harnests.

how much does the legacy code summary cost

The legacy code summary costs £1.00, providing a cost-effective way to understand complex legacy code.

what format is the summary delivered in

The summary is delivered in a text format, divided into clear sections for purpose, key functions, external callers, and potential issues, making it easy to read and understand.

Last updated: 2026-06-28