rez-next CLAUDE.md

rez-next CLAUDE.md is an instructions file for Claude Code from loonghao/rez-next. It costs 933 tokens per session, scanned A, original, Apache-2.0.

A set of Claude Code instructions for working on the rez-next project, a Python and Rust replacement for the Rez package-management system. It describes the project structure, supported APIs, tools, and coding conventions.

In plain words
What is it for?
Use it when changing rez-next code, checking its API coverage, running builds or tests, or deciding how to import its Python and Rust components.
Why use it?
It helps an agent avoid unsupported APIs, use the project's required commands, and follow rez-next-specific Python and Rust patterns.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions AGENTS.md.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/loonghao/rez-next/claude-md
Clone the repo
git clone --depth 1 https://github.com/loonghao/rez-next

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.

agentmods badge for rez-next CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/loonghao/rez-next/claude-md.svg)](https://agentmods.dev/instructions/loonghao/rez-next/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/loonghao/rez-next/claude-md"><img src="https://agentmods.dev/badge/instructions/loonghao/rez-next/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 933 This file is loaded in full into every session.
When invoked 933 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00933 $0.00933
Opus 5 $0.00466 $0.00466
Sonnet 5 $0.00187 $0.00187
Haiku 4.5 $0.00093 $0.00093

Measured 3d ago against content hash 1962805baf6a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

rez-next 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 3d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

CLAUDE.md · 132 lines

How it starts

The opening of the file, as written. The whole thing — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md - Anthropic Claude Guidance for rez-next

Important: This file references AGENTS.md for core project information. Read that file first.

For Anthropic Claude Agents

When working with the rez-next project, follow this guidance:

1. Start Here

Read AGENTS.md to understand:

  • Project structure and architecture
  • Available Python modules and their Rez equivalents
  • Development workflow (build, test, lint)
  • Common tasks and how to approach them

2. Key Principles

  • Progressive disclosure: AGENTS.md → llms.txt (concise) → llms-full.txt (full API) → docs/ (human guides)
  • Check coverage: Not all Rez APIs are implemented; verify before suggesting code
  • Use vx: Tool management via vx (see vx.toml)
  • Run CI early: vx just ci before submitting changes

3. Python Code Patterns

# ✅ Correct: Use rez_next as drop-in
import rez_next as rez
from rez_next.packages_ import get_latest_package

# ❌ Avoid: Direct rez imports (won't work with rez-next)
import rez

4. Rust Code Patterns

// ✅ Correct: Use the crate structure
use rez_next_version::Version;
use rez_next_package::Package;

// ❌ Avoid: Direct std types when crate types exist

5. Documentation Updates

When updating documentation:

  1. Update AGENTS.md (project map) if structure changes
  2. Update llms.txt (AI-friendly concise index) if submodule list changes
  3. Update llms-full.txt (complete API reference) for new APIs
  4. Update docs/*.md (human guides) for workflow changes
  5. Update README.md / README_zh.md for user-facing changes

6. Commit Messages

Follow Conventional Commits:

feat: add new solver heuristic
fix(solver): handle cyclic dependencies
docs: update AGENTS.md with new module
chore: upgrade dependencies

7. Testing Strategy

# Always run tests before submitting
vx just test

# Run specific tests
vx cargo test --package rez-next-solver

# Run Python tests
maturin develop --release && pytest

Read the full file on GitHub · 132 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.

  1. 3d ago First seen · 132 lines · 933 tokens per session scan A 1962805baf6a

Subscribe to this mod's changes

rez-next CLAUDE.md is an instructions file published in the GitHub repository loonghao/rez-next (25 stars, last pushed 2d ago), licensed Apache-2.0. It adds 933 tokens to every session, about $0.0047 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 2026-09-02.