Apache Struts is an open-source Java web framework that helps developers build applications using the Model-View-Controller pattern, separating data and business logic from page presentation and request handling. Java developers use it to create dynamic web applications with interactive forms and database-backed behavior. The catalogue's skills, instructions, and setting support work with Struts projects.
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.
npx agentmods add instructions/apache/struts/claude-mdgit clone --depth 1 https://github.com/apache/strutsWrote 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.
[](https://agentmods.dev/instructions/apache/struts/claude-md)<a href="https://agentmods.dev/instructions/apache/struts/claude-md"><img src="https://agentmods.dev/badge/instructions/apache/struts/claude-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.01334 | $0.01334 |
| Opus 5 | $0.00667 | $0.00667 |
| Sonnet 5 | $0.00267 | $0.00267 |
| Haiku 4.5 | $0.00133 | $0.00133 |
Grade A, and why
struts CLAUDE.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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
For detailed procedures, use the specialized skills in .claude/skills/.
Project Overview
Apache Struts is a mature MVC web application framework for Java (originally WebWork 2). Uses OGNL for value stack expressions and FreeMarker for UI tag templates.
Version: read it from the root pom.xml — it is 7.4.0-SNAPSHOT as of 2026-08-23. Do not treat the -SNAPSHOT value as the next release number: the release version is chosen at release time from the semver impact of the accumulated changes, so 7.4.0-SNAPSHOT may well ship as something else. Released versions are git tags like STRUTS_7_2_1.
Build Commands
# Run tests (skip assembly for speed)
mvn test -DskipAssembly
# Single test in specific module
mvn test -DskipAssembly -pl core -Dtest=MyClassTest#testMethodName
# Jakarta EE 11 / Spring 7 profile
mvn clean install -Pjakartaee11
Project Structure
struts/
├── core/ # struts2-core - main framework
├── plugins/ # Plugin modules (json, rest, spring, tiles, velocity, etc.)
├── apps/ # Sample applications (showcase, rest-showcase)
├── assembly/ # Distribution packaging
├── bom/ # Bill of Materials for dependency management
├── parent/ # Parent POM with shared configuration
└── jakarta/ # Jakarta EE compatibility modules
Core Architecture
Request Lifecycle: Dispatcher → ActionProxy → ActionInvocation → Interceptor stack → Action → Result
Key packages in org.apache.struts2:
dispatcher- Request handling,Dispatcher, servlet integrationinterceptor- Built-in interceptors (params, validation, fileUpload)components- UI tag components (form, textfield, submit)action- Action interfaces (UploadedFilesAware,SessionAware, etc.)security- Security utilities and OGNL member access policies
Security-Critical Patterns
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.
- yesterday First seen · 107 lines · 1,334 tokens per session scan A 164c7844f73e
struts CLAUDE.md is an instructions file published in the GitHub repository apache/struts (1,366 stars, last pushed today), licensed Apache-2.0. It adds 1,334 tokens to every session, about $0.0067 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 2026-09-03.
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BitcoinAddressFinder CLAUDE.md
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langchain4j-cdi copilot-instructions.md
Copilot instructions for langchain4j/langchain4j-cdi, covering langchain4j cdi integration, working effectively, prerequisites, bootstrap and build and essential commands.
leyden-perf-test AGENTS.md
Instructions for quintesse/leyden-perf-test, covering agents.md - leyden performance test harness, project overview, purpose, primary goals and current state.