typo3-extension-upgrade

typo3-extension-upgrade is a skill for Claude Code, Codex from dirnbauer/typo3-skills. It costs 122 tokens per session (3,487 once invoked), scanned C, original, no licence file.

A migration aid for updating TYPO3 extensions between long-term-support releases, such as versions 11 through 14. It covers compatibility checks, deprecated APIs, and tools including Extension Scanner, Rector, Fractor, and PHPStan.

In plain words
What is it for?
It is for planning and carrying out TYPO3 extension upgrades, checking deprecated code, and fixing compatibility problems.
Why use it?
It helps identify and resolve code that no longer works with a newer TYPO3 release.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit It is for planning and carrying out TYPO3 extension upgrades, checking deprecated code, and fixing compatibility problems.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dirnbauer/typo3-skills/typo3-extension-upgrade
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 dirnbauer/typo3-skills --skill typo3-extension-upgrade
Clone the repo
git clone --depth 1 https://github.com/dirnbauer/typo3-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 typo3-extension-upgrade

README.md
[![agentmods](https://agentmods.dev/badge/skills/dirnbauer/typo3-skills/typo3-extension-upgrade/github.svg)](https://agentmods.dev/skills/dirnbauer/typo3-skills/typo3-extension-upgrade)
Your own site
<a href="https://agentmods.dev/skills/dirnbauer/typo3-skills/typo3-extension-upgrade"><img src="https://agentmods.dev/badge/skills/dirnbauer/typo3-skills/typo3-extension-upgrade/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 typo3-extension-upgrade

Your own site · 80×15
<a href="https://agentmods.dev/skills/dirnbauer/typo3-skills/typo3-extension-upgrade"><img src="https://agentmods.dev/badge/skills/dirnbauer/typo3-skills/typo3-extension-upgrade.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 122 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,487 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00122 $0.03487
Opus 5.5 $0.00049 $0.01395
Sonnet 5.5 $0.00024 $0.00697
Haiku 4.5 $0.00012 $0.00349

Measured 1mo ago against content hash eb091377d680, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

typo3-extension-upgrade scanned grade C with 1 finding 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.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/scan-deprecations.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

&& rm -rf vendor && composer install \
skills/typo3-extension-upgrade/SKILL.md · 231 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 Changed · +109 lines scan A → C eb091377d680
  2. 2mo ago Changed · +27 lines · +21 tokens per session 9569517e91c1
  3. 2mo ago First seen · 95 lines · 101 tokens per session scan A 804638afb2bd

Subscribe to this mod's changes

typo3-extension-upgrade is a skill published in the GitHub repository dirnbauer/typo3-skills (7 stars, last pushed yesterday), with no licence file. It adds 122 tokens to every session and 3,487 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

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