What is typo3-smart-extension-builder AGENTS.md?

Project instructions for TYPO3 Smart Extension Builder, a tool that helps create TYPO3 extensions through an MCP server. MCP is a standard way for AI assistants to call software tools.

Use them when working on this project, including running unit or functional tests, static analysis, code-style checks, PHP linting, or dependency installation.

They provide the project's Docker-based commands and development rules for building, testing, linting, formatting, and analyzing PHP code.

How mittwald/typo3-smart-extension-builder configures Codex and OpenCo

Reuse

Borrowing it

Nothing to install: this file belongs to mittwald/typo3-smart-extension-builder. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/mittwald/typo3-smart-extension-builder/master/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/mittwald/typo3-smart-extension-builder

Made for: Codex, OpenCode.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/mittwald/typo3-smart-extension-builder/agents-md/github.svg)](https://agentmods.dev/instructions/mittwald/typo3-smart-extension-builder/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/mittwald/typo3-smart-extension-builder/agents-md"><img src="https://agentmods.dev/badge/instructions/mittwald/typo3-smart-extension-builder/agents-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/mittwald/typo3-smart-extension-builder/agents-md"><img src="https://agentmods.dev/badge/instructions/mittwald/typo3-smart-extension-builder/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 686 This file is loaded in full into every session.

When invoked 686 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00686	$0.00686
Opus 5	$0.00343	$0.00343
Sonnet 5	$0.00137	$0.00137
Haiku 4.5	$0.00069	$0.00069

Measured 8d ago against content hash c6b50c87c76f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

typo3-smart-extension-builder AGENTS.md 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 8d 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.

AGENTS.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to coding agents like Claude Code or OpenCode when working with code in this repository.

Project Overview

Smart Extension Builder is a TYPO3 MCP (Model Context Protocol) server that provides AI-powered code generation tools for TYPO3 extension development. It exposes scaffolding tools from friendsoftypo3/kickstarter to AI assistants via MCP.

Build & Test Commands

All commands use the Docker-based test runner. Provide -b docker as a flag if Podman is not available on your system.

# Run unit tests
Build/Scripts/runTests.sh -p 8.4 -s unit

# Run a single test file
Build/Scripts/runTests.sh -p 8.4 -s unit -- Tests/Unit/MCP/Tools/ExtensionToolsTest.php

# Run functional tests (requires database)
Build/Scripts/runTests.sh -p 8.4 -d mysql -s functional

# Static analysis
Build/Scripts/runTests.sh -p 8.4 -s phpstan

# Code style check
Build/Scripts/runTests.sh -p 8.4 -s cgl -n

# Fix code style issues
Build/Scripts/runTests.sh -p 8.4 -s cgl

# PHP lint
Build/Scripts/runTests.sh -p 8.4 -s lint

# Install dependencies
Build/Scripts/runTests.sh -p 8.4 -s composerUpdate

Architecture

MCP Tool Pattern

Tools in Classes/MCP/Tools/ follow this structure:

Class marked with #[Autoconfigure(public: true)] for DI discovery
Methods annotated with #[McpTool] attribute
Parameters validated via #[Schema] attributes (pattern, format, enum)
Throw ToolCallException for validation failures
Delegate to kickstarter Creator services for code generation
Return descriptive success message strings

MCP Resource Pattern

Resources in Classes/MCP/Resources/ provide read-only context:

Use #[McpResource] for static resources
Use #[McpResourceTemplate] for URI-parameterized resources
Return formatted Markdown content
Also require #[Autoconfigure(public: true)]

Shared Traits

ExtensionInformationTrait - Reads composer.json/ext_emconf.php for extension metadata
ExtensionCreationTrait - Validates extension keys, class names, base paths

Read the full file on GitHub · 82 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.

8d ago First seen · 82 lines · 686 tokens per session scan A c6b50c87c76f

Subscribe to this mod's changes

typo3-smart-extension-builder AGENTS.md is an instructions file published in the GitHub repository mittwald/typo3-smart-extension-builder (11 stars, last pushed 3mo ago), licensed MIT. It adds 686 tokens to every session, about $0.0034 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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vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

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