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claude-bpmn-skill: Instructions file for Claude Code

CLAUDE.md

claude-bpmn-skill CLAUDE.md is an instructions file for Claude Code from architawr/claude-bpmn-skill. It costs 1,256 tokens per session, scanned A, original, MIT.

Repository instructions for a Claude Code plugin that works with BPMN 2.0 diagrams. BPMN is a standard way to draw and describe business processes, and the instructions cover its Node.js tools, commands, tests, and architecture.

In plain words
What is it for?
Use them when developing or testing the plugin, or when working with BPMN files through its command-line tools.
Why use it?
They explain where the plugin’s real code lives and how to install, test, validate, lint, summarize, and lay out diagram files. This reduces the risk of changing the wrong part or skipping required checks.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is architawr/claude-bpmn-skill's own configuration. It tells Claude Code how to work on claude-bpmn-skill itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything claude-bpmn-skill configures →

not rated 5repo 3mo ago A scan 1,256 tokens original MIT
View source ↗ architawr/claude-bpmn-skill
Reuse

Borrowing it

Nothing to install: this file belongs to architawr/claude-bpmn-skill. 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/architawr/claude-bpmn-skill/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/architawr/claude-bpmn-skill

Made for: Claude Code.

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Per session 1,256 This file is loaded in full into every session.
When invoked 1,256 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01256 $0.01256
Opus 5 $0.00628 $0.00628
Sonnet 5 $0.00251 $0.00251
Haiku 4.5 $0.00126 $0.00126

Measured 9d ago against content hash 63916e9a21a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

claude-bpmn-skill 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 9d 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.

CLAUDE.md · 96 lines

How it starts

The opening of the file, as written. The whole thing — 96 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.

What this repo is

A Claude Code plugin (and a one-plugin marketplace, bpmn-tools) for working with BPMN 2.0 process diagrams. The shipped artifact is the skill at skills/bpmn/; commands/*.md are slash-command wrappers that invoke it. The plugin is consumed by a model, but all real mechanics are deterministic Node code you can run and test directly.

Commands

All Node work happens in skills/bpmn/ (deps are not committed — run install first):

cd skills/bpmn && npm install      # one-time: fetches bpmn-moddle + bpmn-auto-layout
npm test                           # full suite (node --test, files in test/*.test.mjs)
node --test test/resync.test.mjs   # one test file
node --test --test-name-pattern "prunes" test/resync.test.mjs   # one test by name

The CLI (run from skills/bpmn/):

node scripts/bpmn-tool.mjs summarize <file.bpmn> [--json]
node scripts/bpmn-tool.mjs layout    <in.bpmn> [out.bpmn] [--rebuild]
node scripts/bpmn-tool.mjs validate  <file.bpmn>
node scripts/bpmn-tool.mjs lint      <file.bpmn>
node scripts/bpmn-tool.mjs diff      <a.bpmn> <b.bpmn>
node scripts/bpmn-tool.mjs find      <file.bpmn> <term>

Architecture

Two layers in every .bpmn. Semantics (bpmn:process / bpmn:collaboration — tasks, gateways, flows) and Diagram Interchange (bpmndi:BPMNDiagram — x/y coordinates). The whole design rests on: the model edits semantics; the script owns the DI. Never hand-write coordinates.

scripts/lib.mjs is the single source of truth. Every mechanic (layoutModel, validateModel, lintModel, summarizeText/Json, diffModels, findModel) lives here as a function over data. scripts/bpmn-tool.mjs is a thin CLI that only formats output and sets exit codes. Add logic to lib.mjs, not the CLI.

The layout safety contract (do not regress this). layoutModel(xml, {rebuild}):

  • If the file already has DI and rebuild is falsy → resync: preserve all existing geometry, pruneDI (drop shapes/edges whose element was deleted — a deleted element leaves a bpmnElement === undefined dangling ref), addDI (auto-place shapes/edges for new elements), then placeExtras.
  • If there's no DI, or rebuild is true → generate from scratch. Layout is non-destructive by default. The historical bug this fixed: the old code always regenerated and ran a collapseSubProcessDI that deleted sub-process drill-down pages, emptying them. Do not reintroduce a destructive default or sub-process collapsing.

Read the full file on GitHub · 96 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. 9d ago First seen · 96 lines · 1,256 tokens per session scan A 63916e9a21a2

Subscribe to this mod's changes

claude-bpmn-skill CLAUDE.md is an instructions file published in the GitHub repository architawr/claude-bpmn-skill (5 stars, last pushed 3mo ago), licensed MIT. It adds 1,256 tokens to every session, about $0.0063 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 2026-08-31.

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