Borrowing it
Nothing to install: this file belongs to ferrislucas/Circus-Chief. 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/ferrislucas/Circus-Chief/main/CLAUDE.mdgit clone --depth 1 https://github.com/ferrislucas/Circus-ChiefWrote 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/ferrislucas/circus-chief/claude-md)<a href="https://agentmods.dev/instructions/ferrislucas/circus-chief/claude-md"><img src="https://agentmods.dev/badge/instructions/ferrislucas/circus-chief/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 5.1 | $0.02092 | $0.02092 |
| Opus 5 | $0.01046 | $0.01046 |
| Sonnet 5 | $0.00418 | $0.00418 |
| Haiku 4.5 | $0.00209 | $0.00209 |
Grade A, and why
Circus-Chief 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 7d 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 — 208 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
Circus Chief is a local-first web application for managing AI coding agent sessions with a visual canvas for artifacts. It supports Claude Code agents (via Anthropic API, AWS Bedrock, Google Vertex AI, z.ai, or any Anthropic-compatible endpoint), OpenAI Codex agents, and Google Gemini CLI agents. Users can view/manage sessions, share a visual canvas (images, documents, data), and interact with active coding sessions from a web browser.
Common Commands
# Development - start both frontend and backend
yarn dev
# Run all unit tests
yarn test
# Run tests for a specific package
yarn workspace @circuschief/server test
yarn workspace @circuschief/web test
# Run a single test file (vitest)
yarn workspace @circuschief/server test src/db/SessionRepository.test.js
yarn workspace @circuschief/web test src/stores/ui.test.js
# E2E tests with Playwright
./scripts/pw.sh test # Run all E2E tests
./scripts/pw.sh test --grep="login" # Filter by test name
./scripts/pw.sh debug tests/e2e/auth.spec.ts # Debug mode (headed)
# Linting
yarn lint
# Build for production
yarn build
Architecture
Monorepo Structure (Yarn Workspaces)
- packages/server - Express backend with WebSocket support
- packages/web - Vue.js 3 frontend (Vite, Pinia, Vue Router)
- packages/shared - Shared types, constants, and Zod contracts
Server Package (@circuschief/server)
src/index.js- Entry point, starts HTTP serversrc/app.js- Express app configurationsrc/websocket.js- WebSocket server setupsrc/api/- REST API routes (projects, sessions, canvas, git, providers)src/agents/- Agent adapter pattern for multi-backend supportAgentGateway.js- Factory/registry for agent adaptersBaseAgent.js- Abstract base class for agent adaptersadapters/ClaudeCodeAdapter.js- Claude Code agent (Anthropic)adapters/CodexAdapter.js- OpenAI Codex agent (OpenAI)adapters/GeminiAdapter.js- Google Gemini CLI agent (Google)adapters/cliUtils.js- Shared CLI utilities (prompt composition) used by Codex and Gemini adapters
src/db/- SQLite repositories using better-sqlite3BaseRepository.js- Abstract base with CRUD operations- Repository pattern:
ProjectRepository,SessionRepository,MessageRepository,CanvasItemRepository,SessionNoteRepository
src/services/- Business logic (sessionManager, canvasStore, gitService, diffService)src/ws/- WebSocket manager for real-time updates
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.
- 7d ago First seen · 208 lines · 2,092 tokens per session scan A 8f84c5bd7609
Circus-Chief CLAUDE.md is an instructions file published in the GitHub repository ferrislucas/Circus-Chief (12 stars, last pushed today), licensed Apache-2.0. It adds 2,092 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
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AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
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spec-kit AGENTS.md
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