Borrowing it
Nothing to install: this file belongs to byaan-ai/byaan. 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/byaan-ai/byaan/main/CLAUDE.mdgit clone --depth 1 https://github.com/byaan-ai/byaanWrote 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/byaan-ai/byaan/claude-md)<a href="https://agentmods.dev/instructions/byaan-ai/byaan/claude-md"><img src="https://agentmods.dev/badge/instructions/byaan-ai/byaan/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/byaan-ai/byaan/claude-md"><img src="https://agentmods.dev/badge/instructions/byaan-ai/byaan/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 | $0.01885 | $0.01885 |
| Opus 5 | $0.00942 | $0.00942 |
| Sonnet 5 | $0.00377 | $0.00377 |
| Haiku 4.5 | $0.00188 | $0.00188 |
Grade A, and why
byaan 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 12d 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 — 189 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
Byaan is a secure, locally-running data analysis tool that connects to databases and AI models while keeping data private. It's a desktop application (macOS/Linux) built with React frontend, FastAPI backend, and Tauri wrapper. Users can connect to databases (PostgreSQL, MongoDB, MySQL, SQLite), analyze data through AI-powered queries, and build exportable dashboards.
Key Value Proposition: Data never leaves the local machine. Users connect to federated AI models (Azure, Bedrock, OpenRouter) and explore their databases securely without cloud dependencies.
Build & Development Commands
Backend (Python/FastAPI)
cd server && uv run ruff format . && uv run ruff check --fix . # Format & lint
cd server && uv run ruff check . # Lint check only
cd server && PYTHONPATH=..:tests uv run pytest # Run all tests
cd server && PYTHONPATH=..:tests uv run pytest tests/test_file.py::test_function # Single test
cd server && uv run pytest --cov=server --cov-report=term-missing # Tests with coverage
Frontend (React/TypeScript)
cd client && pnpm dev # Development server (port 5173)
cd client && pnpm build # Production build
cd client && pnpm build:check # TypeScript + Vite build check
cd client && pnpm lint # ESLint
Desktop App (Tauri)
cd client && pnpm tauri:dev # Dev mode with hot reload
cd client && pnpm tauri:build # Production build (auto-detects arch)
cd client && pnpm tauri:build:m-series # M-series Mac build
cd client && pnpm tauri:build:intel # Intel Mac build
Docker
# Local/Community (default — SQLite, no PostgreSQL)
make setup # Build images
make dev # Run with logs (foreground)
make dev-detach # Run in background
make dev-build # Build + run with logs
make stop # Stop all services
make rebuild # Full rebuild (no cache)
make clean # Remove containers/volumes
# Hosted (PostgreSQL, closer to production)
make hosted # Start hosted environment (background)
make hosted-logs # Start with visible logs
make hosted-stop # Stop hosted services
make hosted-rebuild # Rebuild hosted images
make hosted-clean # Remove hosted containers/volumes
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.
- 12d ago First seen · 189 lines · 1,885 tokens per session scan A 2135a2798de3
byaan CLAUDE.md is an instructions file published in the GitHub repository byaan-ai/byaan (95 stars, last pushed 16d ago), licensed MIT. It adds 1,885 tokens to every session, about $0.0094 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.
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.
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).