Liam ERD is a tool that turns database schemas into interactive entity-relationship diagrams, visual maps showing tables and their relationships. It helps people understand and document database structures, including complex schemas.
Borrowing it
Nothing to install: this file belongs to liam-hq/liam. 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/liam-hq/liam/main/CLAUDE.mdgit clone --depth 1 https://github.com/liam-hq/liamWrote 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/liam-hq/liam/claude-md)<a href="https://agentmods.dev/instructions/liam-hq/liam/claude-md"><img src="https://agentmods.dev/badge/instructions/liam-hq/liam/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/liam-hq/liam/claude-md"><img src="https://agentmods.dev/badge/instructions/liam-hq/liam/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 | $0.00899 | $0.00899 |
| Opus 5.5 | $0.00360 | $0.00360 |
| Sonnet 5.5 | $0.00180 | $0.00180 |
| Haiku 4.5 | $0.00090 | $0.00090 |
Grade A, and why
liam 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 — 119 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.
Essential Commands
- pnpm dev - Start dev servers
- cd frontend/apps/app && pnpm dev - Start dev server for specific package
- pnpm build - Build all packages
- pnpm lint - Run linting and formatting
- pnpm test - Run tests
- pnpm fmt - Run format code
App-specific Commands
# Run only the main web app (port 3001)
pnpm --filter @liam-hq/app dev
# Format code
pnpm --filter @liam-hq/schema fmt
# Test
pnpm --filter @liam-hq/schema test
Architecture
Monorepo Structure
Applications
- frontend/apps/app - Main Next.js web application (
@liam-hq/app) - frontend/apps/docs - Documentation site (
@liam-hq/docs)
Public Packages
- frontend/packages/cli - Command-line tool (
@liam-hq/cli) - frontend/packages/erd-core - Core ERD visualization (
@liam-hq/erd-core) - frontend/packages/schema - Database schema parser (
@liam-hq/schema) - frontend/packages/ui - UI component library (
@liam-hq/ui)
Internal Packages
- frontend/internal-packages/mcp-server - MCP server implementation (
@liam-hq/mcp-server)
Key Technologies
- Frontend: React 19, Next.js 15, TypeScript
- Styling: CSS Modules with typed definitions
- Visualization: @xyflow/react (React Flow)
- Validation: Valibot for runtime type validation
- Build: Turborepo, pnpm workspaces
Development Guidelines
Core Principle: Less is more
Keep every implementation as small and obvious as possible.
- Let the code speak – If you need a multi-paragraph comment, refactor until intent is obvious
- Delete fearlessly, Git remembers – Cut dead code, stale logic, and verbose history
TypeScript Standards
- Use runtime type validation with
valibotfor external data validation - Use early returns for readability
Code Editing
- Write simple, direct code without backward compatibility concerns - update all call sites together
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 Changed · -2 lines · -46 tokens per session 0a2f0e28ef8e
- 2mo ago First seen · 121 lines · 945 tokens per session scan A e4c3f3e1deeb
liam CLAUDE.md is an instructions file published in the GitHub repository liam-hq/liam (5,156 stars, last pushed yesterday), licensed Apache-2.0. It adds 899 tokens to every session, about $0.0036 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.
Other instructions, from other repositories
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).
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.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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 copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.