amber

A contributor guide for Amber, a software project with a compiler, standard library, documentation, and developer tools. It describes the knowledge areas contributors may need.

In plain words
What is it for?
Use it when contributing to Amber and deciding whether your work belongs in the compiler, library, documentation, or tooling.
Why use it?
It gives contributors context about the project’s different parts before they start making changes.

Skill for Claude CodeCodex

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 skills/mte90/dotfiles/amber
Any agent
npx skills add Mte90/dotfiles --skill amber
Clone the repo
git clone --depth 1 https://github.com/Mte90/dotfiles

Made for: Claude Code, Codex.

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,901 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin unknown 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 $0.00000 $0.03901
Opus 5 $0.00000 $0.01951
Sonnet 5 $0.00000 $0.00780
Haiku 4.5 $0.00000 $0.00390

Measured 2d ago against content hash ffd564fa1f7a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

amber scanned grade B with 1 finding 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 2d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo trust $ apt update $ // Privilege escalation + no failure check
.config/opencode/skills/amber/SKILL.md · 600 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2d ago First seen · 600 lines · 0 tokens per session scan B ffd564fa1f7a

Subscribe to this mod's changes

amber is a skill published in the GitHub repository Mte90/dotfiles (51 stars, last pushed 7d ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 3,901 tokens. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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