Borrowing it
Nothing to install: this file belongs to matiasvillaverde/think. 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/matiasvillaverde/think/main/CLAUDE.mdgit clone --depth 1 https://github.com/matiasvillaverde/thinkWrote 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/matiasvillaverde/think/claude-md)<a href="https://agentmods.dev/instructions/matiasvillaverde/think/claude-md"><img src="https://agentmods.dev/badge/instructions/matiasvillaverde/think/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 | $0.01689 | $0.01689 |
| Opus 5 | $0.00844 | $0.00844 |
| Sonnet 5 | $0.00338 | $0.00338 |
| Haiku 4.5 | $0.00169 | $0.00169 |
Grade A, and why
think 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 — 210 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Project instructions for Claude Code. This file is automatically loaded.
Quick Reference
make lint && make build && make test # Quality check (run before commits)
make run # Build and run macOS app
cd ModuleName && make test # Test specific module
Hierarchical Documentation
This project uses hierarchical CLAUDE.md files. Always check for module-specific instructions:
| Location | Purpose |
|---|---|
/CLAUDE.md (this file) |
Universal project rules |
/ModuleName/CLAUDE.md |
Module-specific guidance (exists in most modules) |
/CI.md |
Build, test, deployment workflows |
/CONTRIBUTING.md |
Contribution process |
/AGENTS.md |
Architecture diagrams and quick start |
When working in a module, read its CLAUDE.md first - it contains testing requirements, architecture patterns, and common issues specific to that module.
Development Philosophy
Test-Driven Development (TDD)
- Write failing test first using SwiftTesting framework (NOT XCTest)
- Write minimal code to make the test pass
- Refactor while keeping tests green
- Never add functionality without a test
Incremental Development
- Add small amounts of code at a time
- Run
make buildafter every change - Commit with Conventional Commits format
- Keep changes focused and atomic
Module Structure
17 Core Modules
All modules have Package.swift, Makefile, .swiftlint.yml, and most have their own CLAUDE.md:
| Module | Purpose | Special Requirements |
|---|---|---|
| Abstractions | Protocol definitions | Foundation for all modules |
| Database | SwiftData persistence | Command pattern mandatory |
| ViewModels | Business logic | Actor-based concurrency |
| UIComponents | SwiftUI components | - |
| Factories | Dependency injection | All instantiation goes here |
| ContextBuilder | Chat prompt formatting | Strategy pattern |
| AgentOrchestrator | AI model coordination | Agentic loop pattern |
| Tools | Function calling | SwiftSoup for HTML |
| ImageGenerator | Stable Diffusion (Core ML) | Relaxed SwiftLint rules |
| MLXSession | MLX framework inference | xcodebuild only, not swift test |
| LLamaCPP | llama.cpp inference | Binary XCFramework |
| AudioGenerator | Voice synthesis (Kokoro TTS) | xcodebuild only |
| ModelDownloader | HuggingFace downloads | - |
| RAG | Document search | Embeddings-based |
| DataAssets | Static configuration data | - |
| AppStoreConnectCLI | App Store automation | Deployment scripts |
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 · 210 lines · 1,689 tokens per session scan A c9d4976f4cf5
think CLAUDE.md is an instructions file published in the GitHub repository matiasvillaverde/think (5 stars, last pushed 6mo ago), licensed MIT. It adds 1,689 tokens to every session, about $0.0084 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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