What is clopen CLAUDE.md?

Project-specific instructions for contributing code to the Clopen project, covering work before, during, and after coding.

Use them when working on Clopen tasks, especially pull-request reviews and changes that need tests, linting, commits, and branches.

They make the expected workflow and project rules clear, including checks to run and how to deliver changes.

How myrialabs/clopen configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to myrialabs/clopen. 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/myrialabs/clopen/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/myrialabs/clopen

Made for: Claude Code.

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/myrialabs/clopen/claude-md/github.svg)](https://agentmods.dev/instructions/myrialabs/clopen/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/myrialabs/clopen/claude-md"><img src="https://agentmods.dev/badge/instructions/myrialabs/clopen/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/myrialabs/clopen/claude-md"><img src="https://agentmods.dev/badge/instructions/myrialabs/clopen/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 772 This file is loaded in full into every session.

When invoked 772 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	$0.00772	$0.00772
Opus 5.5	$0.00309	$0.00309
Sonnet 5.5	$0.00154	$0.00154
Haiku 4.5	$0.00077	$0.00077

Measured 1mo ago against content hash 2824d9e10b1c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

clopen 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 1mo 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 · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Code Guidelines

This document provides guidelines for Claude Code when working on the Clopen project.

WORK PROTOCOL

Before Coding

Identify which stage is currently being worked on
Understand the specific task that needs to be completed
For PR-related tasks (e.g., "review PR #123", "check PR X"), read MAINTAINERS.md first to understand the PR workflow, review process, and maintainer conventions

During Coding

Follow agreed-upon architecture and patterns
Do not change technical decisions without discussion
Ensure code matches the established folder structure
Use chosen libraries and frameworks
Do NOT run bun run dev or bun run build commands

After Coding

Run bun run check and bun run lint; add bun run test when the change touches tested logic
Do not create any .md files unless explicitly instructed
Hand back the three artifacts from CONTRIBUTING.md → Delivering a Change:
- Branch: <type>/<description> — lowercase, kebab-case, concise
- One commit: <type>(<scope>): <subject> (imperative, lowercase, no period) plus a body — what broke, why it happened, what the change does about it, wrapped at 72 columns
- PR description from the template, ready to paste — or a PR comment if the work extends an open PR
- Do NOT create the branch, commit, or PR automatically — draft all three for review

IMPORTANT RULES

Be CONSISTENT with previously made decisions
COMMUNICATE if existing plans need to be changed
STOP after each stage for review

PROJECT-SPECIFIC GUIDELINES

Runtime & Package Manager

Bun-only project — Node.js and Deno are NOT supported
Always use bun commands (never npm/pnpm/yarn)
Runtime checks exist in bin/clopen.ts and backend/index.ts

Architecture

Backend: Bun + Elysia with WebSocket architecture
Frontend: Svelte 5 with runes system ($state, $derived, $effect)
Database: SQLite with migration system

Read the full file on GitHub · 98 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.

1mo ago First seen · 98 lines · 772 tokens per session scan A 2824d9e10b1c

Subscribe to this mod's changes

clopen CLAUDE.md is an instructions file published in the GitHub repository myrialabs/clopen (52 stars, last pushed yesterday), licensed MIT. It adds 772 tokens to every session, about $0.0031 per session on Opus 5.5. 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.

Claude Code ai-agents codex copilot dbms developer-tools

plan-forge dapr.instructions.md

Dapr patterns for .NET — building blocks, component config, sidecar architecture, multi-tenant isolation, workflows, state management, secrets.

srnichols/plan-forge · 4,975 tokens

plan-forge database.instructions.md

Database patterns for .NET — Dapper/EF Core 10, parameterized queries, migration strategy.

srnichols/plan-forge · 1,890 tokens

plan-forge naming.instructions.md

Azure naming conventions — Microsoft CAF abbreviations, constraints, uniqueness, tagging.

srnichols/plan-forge · 1,453 tokens

plan-forge caching.instructions.md

Caching patterns for .NET — IDistributedCache, Redis, in-memory, cache-aside, TTL strategies.

srnichols/plan-forge · 733 tokens

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).

microsoft/vscode · 9,715 tokens

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.

vercel/next.js · 7,461 tokens

clopen: Instructions file for Claude Code