Claude Code Plugin
This page covers the Claude Code plugin that powers the reverse engineering process. The plugin provides a set of skills (slash commands) and agents (autonomous subagents) that together analyse legacy applications and produce structured deliverables.
Prerequisites
You must have Claude Code installed and authenticated before using the plugin.
See the official Claude Code documentation: https://docs.anthropic.com/en/docs/claude-code
This plugin is not published on the marketplace yet, and in the interim, you can clone the plugin from its GitHub repository:
git clone https://github.com/DEFRA/claude-legacy-reveng-plugin
Running with the plugin
Launch Claude Code with the plugin directory:
claude --plugin-dir /path/to/claude-legacy-reveng-plugin
Or set up a shell alias for convenience:
alias claude-lap='claude --plugin-dir /path/to/claude-legacy-reveng-plugin'
Skills
Skills are slash commands that perform focused, single-purpose tasks.
| Skill | Description |
|---|---|
image-to-html |
Converts a legacy UI screenshot into semantic, unstyled mockup HTML |
curate-transcript |
Removes off-topic content from interview transcripts whilst preserving domain knowledge verbatim |
validate-mermaid |
Validates all Mermaid diagram blocks in a markdown file and fixes broken diagrams in place |
prd-to-features |
Decomposes a PRD into individually deliverable feature specifications with user stories, wireframes, and acceptance criteria |
Agents
Agents are autonomous subagents that carry out broader analysis tasks.
| Agent | Description |
|---|---|
digital-content-curator |
Prepares raw screenshots and transcripts into structured, analysis-ready outputs |
business-analyst |
Extracts strategic DDD patterns from curated transcripts and HTML mockups |
interaction-analyst |
Produces screen inventory, user workflows, and navigation maps from mockups and transcripts |
application-developer |
Reads legacy .NET source code to extract workflows, behaviours, domain model, and business rules |
database-analyst |
Reads SQL Server database code to extract schema, stored procedures, and database-level business rules |
product-manager |
Orchestrates all analysts and synthesises a comprehensive PRD |
Component map
The following diagram shows how skills and agents relate to one another.
graph LR
subgraph Skills
i2h
ct
vm
p2f
end
subgraph Agents
curator[digital-content-curator]
ba[business-analyst]
ia[interaction-analyst]
ad[application-developer]
da[database-analyst]
pm[product-manager]
end
curator -->|invokes| i2h
curator -->|invokes| ct
pm -->|orchestrates| ba
pm -->|orchestrates| ia
pm -->|orchestrates| ad
pm -->|orchestrates| da
ba -->|invokes| vm
ia -->|invokes| vm
pm -->|invokes| vm
p2f -->|reads| prd[output/PRD.md]
p2f -->|writes| ft[output/features/FT-*.md]
Further information
Refer to the plugin repository for full documentation, including detailed agent and skill definitions.
