Modernization Agent

Modernization Agent is an agent for Claude Code from github/awesome-copilot. It costs 24 tokens per session (6,094 once invoked), scanned A, original, MIT.

A modernization assistant that examines an existing codebase, documents its features and architecture, and creates a plan for updating it.

In plain words
What is it for?
It is for analysing business logic, frontend behaviour, authentication, permissions, and other parts of an existing application.
Why use it?
It turns a large or unfamiliar project into structured documentation and proposed modernization work before changes are made.

Agent for Claude Code ✓ vendor

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit It is for analysing business logic, frontend behaviour, authentication, permissions, and other parts of an existing application.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/github/awesome-copilot/modernization
About the project

Awesome GitHub Copilot is a community collection of custom agents, instructions, skills, hooks, workflows, plugins, and configuration for GitHub Copilot. It helps Copilot users customize coding and development tasks. Catalogue entries are individual Copilot add-ons from this collection.

github/awesome-copilot · 40,321 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/github/awesome-copilot

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for Modernization Agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/github/awesome-copilot/modernization/github.svg)](https://agentmods.dev/agents/github/awesome-copilot/modernization)
Your own site
<a href="https://agentmods.dev/agents/github/awesome-copilot/modernization"><img src="https://agentmods.dev/badge/agents/github/awesome-copilot/modernization/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for Modernization Agent

Your own site · 80×15
<a href="https://agentmods.dev/agents/github/awesome-copilot/modernization"><img src="https://agentmods.dev/badge/agents/github/awesome-copilot/modernization.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 6,094 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00024 $0.06094
Opus 5.5 $0.00010 $0.02438
Sonnet 5.5 $0.00005 $0.01219
Haiku 4.5 $0.00002 $0.00609

Measured 1mo ago against content hash 4d0c8a31a7f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Modernization Agent scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

3 near-identical copies found in the catalogue:

agents/modernization.agent.md · 581 lines

How it starts

The opening of the file, as written. The whole thing — 581 lines — stays where its author put it; the contents beside it link to each section on GitHub.

This agent runs directly in VS Code with read/write access to your workspace. It guides you through complete project modernization with a structured, stack-agnostic workflow.

Modernization Agent

IMPORTANT: When to Execute Workflow

Ideal Inputs

  • Repository with an existing project (any tech stack)

What This Agent Does

CRITICAL ANALYSIS APPROACH: This agent performs exhaustive, deep-dive analysis before any modernization planning. It:

  • Reads EVERY business logic file (services, repositories, domain models, controllers, etc.)
  • Generates per-feature analysis in separate Markdown files
  • Re-reads all generated feature docs to synthesize a comprehensive README
  • Forces understanding through line-by-line code examination
  • Never skips files - completeness is mandatory

Analysis Phase (Steps 1-7):

  • Analyzes project type and architecture
  • Reads ALL service files, repositories, domain models individually
  • Creates detailed per-feature documentation (one MD file per feature/domain)
  • Re-reads generated feature docs to create master README
  • Frontend business logic: routing, auth flows, role-based/UI-level authorization, form handling & validation, state management (server/cache/local), error/loading UX, i18n/l10n, accessibility considerations
  • Cross-cutting concerns: error handling, localization, auditing, security, data integrity

Planning Phase (Step 8):

  • Recommends modern tech stacks and architectural patterns with expert-level reasoning

Implementation Phase (Step 9):

  • Creates /modernizedone/ folder for new project structure
  • Starts with cross-cuttings and project structure before feature migration
  • Generates actionable, step-by-step implementation plans for developers or Copilot agents

This agent does not:

  • Skip files or take shortcuts
  • Bypass validation checkpoints
  • Begin modernization without complete understanding

Inputs & Outputs

Inputs: Repository with existing project (any stack: .NET, Java, Python, Node.js, Go, PHP, Ruby, etc.)

Read the full file on GitHub · 581 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 581 lines · 24 tokens per session scan A 4d0c8a31a7f7

Subscribe to this mod's changes

Modernization Agent is an agent published in the GitHub repository github/awesome-copilot (40,321 stars, last pushed today), licensed MIT. It adds 24 tokens to every session and 6,094 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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