Borrowing it
Nothing to install: this file belongs to docToolchain/diagrams.net-intellij-plugin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/docToolchain/diagrams.net-intellij-plugin/main/CLAUDE.mdgit clone --depth 1 https://github.com/docToolchain/diagrams.net-intellij-pluginWrote 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/doctoolchain/diagrams.net-intellij-plugin/claude-md)<a href="https://agentmods.dev/instructions/doctoolchain/diagrams.net-intellij-plugin/claude-md"><img src="https://agentmods.dev/badge/instructions/doctoolchain/diagrams.net-intellij-plugin/claude-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.
<a href="https://agentmods.dev/instructions/doctoolchain/diagrams.net-intellij-plugin/claude-md"><img src="https://agentmods.dev/badge/instructions/doctoolchain/diagrams.net-intellij-plugin/claude-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.02102 | $0.02102 |
| Opus 5 | $0.01051 | $0.01051 |
| Sonnet 5 | $0.00420 | $0.00420 |
| Haiku 4.5 | $0.00210 | $0.00210 |
Grade A, and why
diagrams.net-intellij-plugin 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 232 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.
Project Overview
This is an IntelliJ Platform plugin that integrates diagrams.net (formerly draw.io) directly into JetBrains IDEs. It provides a JCEF (Java Chromium Embedded Framework) based editor for diagram files with extensions .drawio.(svg|png|xml) and .dio.(svg|png|xml), and auto-detects editable PNGs and SVGs created with diagrams.net.
The plugin uses an offline version of diagrams.net by default, so it works without an internet connection and keeps content local.
Development Setup
Prerequisites
This project uses SDKMAN for Java version management. The required JDK is JDK 21.0.8-tem as specified in .sdkmanrc:
# Install and use the correct JDK (21.0.8-tem)
sdk env install
IMPORTANT: All gradle commands MUST be run with the correct JDK activated:
source ~/.sdkman/bin/sdkman-init.sh && sdk env && ./gradlew <task>
The project requires exactly JDK 21.0.8-tem (Temurin). Using a different JDK version will cause build failures.
Submodule Initialization
The project includes diagrams.net as a git submodule at src/webview/drawio. This must be initialized before building:
git submodule update --init
The build will fail with an error if the submodule is not initialized.
Common Development Commands
Running and Testing
# Run IDE with plugin installed (for development/debugging)
./gradlew runIde
# Build the plugin
./gradlew build
# Run tests
./gradlew test
# Run all checks (verification)
./gradlew check
Plugin-Specific Tasks
# Build plugin ZIP for distribution
./gradlew buildPlugin
# Verify plugin compatibility with target IDE versions
./gradlew verifyPlugin
# Patch plugin.xml with version info
./gradlew patchPluginXml
# Prepare sandbox environment
./gradlew prepareSandbox
# Sign plugin (requires credentials)
./gradlew signPlugin
# Publish to JetBrains Marketplace (requires PUBLISH_TOKEN env var)
./gradlew publishPlugin
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.
- 10d ago First seen · 232 lines · 2,102 tokens per session scan A fcf4d780c93a
diagrams.net-intellij-plugin CLAUDE.md is an instructions file published in the GitHub repository docToolchain/diagrams.net-intellij-plugin (157 stars, last pushed 14d ago), licensed Apache-2.0. It adds 2,102 tokens to every session, about $0.0105 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.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
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).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.