35 tagged legacy-modernization, measured the same way as everything else here.
Browse within: cobol 6mainframe 6requirements-extraction 6
Command Claude Code
Understand the organization, its industry, its constraints, and its goals before touching any code. Present these questions conversationally, not as a checklist. Follow up based on answers.
Command Claude Code
Propose the future-state architecture based on Phases 0-2. Expect multiple revision cycles.
Command Claude Code
Turn the target architecture into an actionable, phased implementation plan.
Instructions file GitHub Copilot
Instructions for Burly-Mingo/modernization-kit, covering application modernization — copilot custom instructions, how to use this, non-negotiable principles, key methodology concepts and interaction style.
Instructions file
Instructions for Burly-Mingo/modernization-kit, covering application modernization — claude code instructions, how to use this, non-negotiable principles, key methodology concepts and interaction style.
Agent Claude Code
You are the AgentReady Transformer — an expert agent that deeply analyses existing codebases and generates all scaffolding files needed for AI agents to understand and operate on the repository without hallucinations.
Instructions file CodexOpenCode
Instructions for vb-nattamai/agent-ready, covering agents.md — agentready operating contract, project overview, commands, install (development) and install (end-user, with llm support).
Instructions file
Instructions for vb-nattamai/agent-ready, covering claude.md — agent-ready, critical commands, install (end-user, with llm support), build (development, editable install with dev extras) and run (transform a target repository).
Cursor rule Cursor
A minimal Flask REST API that provides personalised greetings, records them in memory, and exposes health-check and listing endpoints.
Instructions file GitHub Copilot
Instructions for vb-nattamai/agent-ready, covering copilot instructions — helloworld, project summary, commands, module layout and restricted paths.
Skill Claude CodeCodex
Run the COBOL reverse-engineering tool. Covers init, stage, and run commands with all CLI options, strategies, and worker selection. Use when asked to run, execute, or operate the analysis tool, or when troubleshooting a run.
Instructions file
Instructions for dsheard/cobol-o-matic, covering cobol reverse engineering tool, directory layout, design principles, key files when editing and platform-agnostic rules.
Skill Claude CodeCodex
Find factual metadata in COBOL source files including transaction IDs, file/dataset names, copybook references, CALL targets, XCTL targets, and record layouts. Use when extracting program dependencies, building frontmatter, or looking up COBOL naming conventions.
Skill Claude CodeCodex
Cross-reference and verify claims in COBOL analysis artifacts against source code and other artifacts. Use when validating frontmatter fields, checking call relationships, confirming transaction IDs, or reviewing artifact consistency.
Plugin Claude Code
Development Driven Spec - reverse-engineer an Arc42-informed specification from legacy code through bottom-up excavation with LLM-as-Judge fidelity verification. Inverts the spec-driven-development direction: code -> spec.
Agent
Use this agent to extract business rules from legacy code - validations, calculations, workflows, and authorization rules - producing a citation-grounded business rule registry. Specializes in finding the implicit domain knowledge encoded across controllers, services, validators, and stored procedures.
Agent
Use this agent to extract every database interaction from a legacy module - inline SQL, stored procedure calls, ORM mappings, migrations - and produce a citation-grounded SQL inventory and data dictionary. Specializes in finding business logic hidden in the data layer.
Agent
Use this agent to synthesize per-module specs and global registries into a unified Arc42 specification (sections 01-12). Operates after all modules have been excavated. Produces human-readable, citation-inheriting architectural documentation.
Skill Claude CodeCodex
Final phase of DDS reverse-engineering. Synthesizes all per-module specs and global registries into the unified Arc42 specification tree (sections 01-12), producing a human-readable, citation-grounded specification of the legacy system suitable for understanding, audit, or driving a rewrite.
Skill Claude CodeCodex
Phase 2 of DDS reverse-engineering. Performs deep, line-by-line excavation of a single module (or all modules) from a legacy codebase, extracting business rules, SQL queries, integrations, and dead code, with mandatory file:line citations and LLM-as-Judge fidelity verification on every claim.
Skill Claude CodeCodex
Phase 1 of DDS reverse-engineering. Performs lightweight reconnaissance of a legacy codebase to detect the tech stack, enumerate entry points, build a module map, and estimate the cost of full excavation. Output is spec/00-survey.md.
legacy-ai-labs/mcp-server-language-converter
Cursor rule Cursor
You are an expert in Python, FastAPI, and scalable API development.
legacy-ai-labs/mcp-server-language-converter
Cursor rule Cursor
Use this rule when configuring or debugging uv environments, resolving dependency conflicts, or managing pyproject.toml entries.
legacy-ai-labs/mcp-server-language-converter
Instructions file
Claude Code instructions for legacy-ai-labs/mcp-server-language-converter, covering claude.md, project overview, essential commands, package management (uv only - never pip/poetry) and database.
At most 3 mods per repository are shown here — the rest are on their repository pages: