magento-upgrade-specialist

magento-upgrade-specialist is a skill for Claude Code, Codex from maxnorm/magento2-agent-skills. It costs 55 tokens per session (1,421 once invoked), scanned A, original, MIT.

A coding-agent guide for upgrading Magento 2 stores or moving Magento 1 stores to Magento 2. Magento is an e-commerce platform, and the guide covers compatibility checks, breaking changes, custom code, data, and performance.

In plain words
What is it for?
Use it to assess an existing Magento installation, plan an upgrade or migration, check extension compatibility, find deprecated code, and review the result afterward.
Why use it?
Platform upgrades can break store code, extensions, integrations, or data. This guide organizes the checks needed before, during, and after an upgrade.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to assess an existing Magento installation, plan an upgrade or migration, check extension compatibility, find deprecated code, and review the result afterward.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/maxnorm/magento2-agent-skills/magento-upgrade-specialist
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.

Any agent
npx skills add maxnorm/magento2-agent-skills --skill magento-upgrade-specialist
Clone the repo
git clone --depth 1 https://github.com/maxnorm/magento2-agent-skills

Made for: Claude Code, Codex.

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 magento-upgrade-specialist

README.md
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Your own site
<a href="https://agentmods.dev/skills/maxnorm/magento2-agent-skills/magento-upgrade-specialist"><img src="https://agentmods.dev/badge/skills/maxnorm/magento2-agent-skills/magento-upgrade-specialist/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 magento-upgrade-specialist

Your own site · 80×15
<a href="https://agentmods.dev/skills/maxnorm/magento2-agent-skills/magento-upgrade-specialist"><img src="https://agentmods.dev/badge/skills/maxnorm/magento2-agent-skills/magento-upgrade-specialist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,421 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 $0.00055 $0.01421
Opus 5 $0.00028 $0.00711
Sonnet 5 $0.00011 $0.00284
Haiku 4.5 $0.00006 $0.00142

Measured 12d ago against content hash 83b353b5602d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

magento-upgrade-specialist 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 12d 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.

skills/magento-upgrade-specialist/SKILL.md · 170 lines

How it starts

The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Magento 2 Upgrade Specialist

Expert specialist in ensuring smooth, risk-free transitions between Magento versions while maintaining business continuity and preserving custom functionality.

When to Use

  • Upgrading Magento 2 versions (minor or major)
  • Migrating from Magento 1.x to Magento 2.x
  • Planning upgrade strategies and timelines
  • Assessing extension compatibility
  • Handling breaking changes
  • Post-upgrade optimization

Upgrade Process Framework

1. Pre-Upgrade Assessment

  • Current System Audit: Comprehensive analysis of existing Magento installation
  • Custom Code Review: Evaluate all custom modules, themes, and modifications
  • Extension Compatibility: Check third-party extension compatibility with target version
  • Data Integrity Check: Verify database consistency and identify potential issues
  • Performance Baseline: Establish current performance metrics for comparison

2. Compatibility Analysis

  • Static Code Analysis: Use automated tools to identify compatibility issues
  • API Change Review: Analyze breaking changes in core APIs and interfaces
  • Deprecated Feature Assessment: Identify and plan replacement for deprecated functionality
  • Database Schema Changes: Review required database modifications
  • Configuration Changes: Identify system configuration updates needed

3. Migration Planning

  • Upgrade Path Strategy: Choose optimal upgrade path (direct vs. incremental)
  • Environment Setup: Plan development, staging, and production upgrade environments
  • Downtime Minimization: Develop strategies to reduce production downtime
  • Data Migration Strategy: Plan for large dataset migrations and optimizations
  • Contingency Planning: Prepare for various failure scenarios and recovery procedures

4. Implementation Execution

  • Code Migration: Update custom code to work with target Magento version
  • Database Upgrade: Execute database schema and data migrations
  • Configuration Migration: Transfer and update system configurations
  • Extension Updates: Upgrade or replace third-party extensions
  • Testing Validation: Comprehensive testing of all upgraded functionality

Read the full file on GitHub · 170 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. 12d ago First seen · 170 lines · 55 tokens per session scan A 83b353b5602d

Subscribe to this mod's changes

magento-upgrade-specialist is a skill published in the GitHub repository maxnorm/magento2-agent-skills (29 stars, last pushed 7mo ago), licensed MIT. It adds 55 tokens to every session and 1,421 once invoked, about $0.0003 per session on Opus 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 2026-08-30.

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