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.
npx agentmods add instructions/martinffx/atelier/agents-mdgit clone --depth 1 https://github.com/martinffx/atelierWhat 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 | $0.00514 | $0.00514 |
| Opus 5 | $0.00257 | $0.00257 |
| Sonnet 5 | $0.00103 | $0.00103 |
| Haiku 4.5 | $0.00051 | $0.00051 |
Grade A, and why
atelier AGENTS.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.
How it starts
The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides guidance to AI agents when working with code in this repository.
Repository Overview
This is Atelier - a personal development toolkit for spec-driven development, deep thinking, and code quality.
Skills Structure
Skills are located in the skills/ directory. Each skill is a self-contained module with:
skills/{category}-{name}/
├── SKILL.md # Main skill definition
└── references/ # Optional additional context
├── topic-a.md
└── topic-b.md
Skill File Format
Skills use YAML frontmatter for metadata:
---
name: skill-name
description: When to use this skill (AI reads this to auto-load)
user-invocable: false # or true if user can call directly
---
Skills are auto-invoked based on description match to current context.
Namespace Philosophy
Skills are organized into three namespaces based on their role:
spec: - Workflow Skills
Sequential, state-transforming steps that produce an approved plan and may produce artifacts.
- Process-oriented: Each skill is a step in a workflow
- User-invoked: Called explicitly by user or previous skill
- Output-producing: Each produces conversational or persisted output
- Disciplined: Must be followed exactly, not adapted
oracle: - Thinking Skills
Analytical, knowledge-providing skills that inform decisions.
- Knowledge-oriented: Provide patterns, principles, guidance
- Context-driven: Auto-invoked when relevant context detected
- Adaptable: Principles adapted to specific situation
- Supportive: Inform workflow decisions, don't produce artifacts
code: - Utility Skills
Tools and helpers for specific tasks.
- Task-oriented: Solve specific problems
- User-invoked: Called when needed
- Standalone: Can be used independently or within workflow
Namespace Semantics
| Namespace | Type | Invocation | Output | Flexibility |
|---|---|---|---|---|
| spec: | Process | User/previous skill | Plan/artifact | Follow exactly |
| oracle: | Knowledge | Context-driven | Guidance | Adapt to context |
| code: | Utility | User | Result | Use as needed |
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.
- 3d ago First seen · 82 lines · 514 tokens per session scan A 89943c40b829
atelier AGENTS.md is an instructions file published in the GitHub repository martinffx/atelier (44 stars, last pushed 24d ago), licensed MIT. It adds 514 tokens to every session, about $0.0026 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
oh-my-claudecode AGENTS.md
AGENTS.md instructions for Yeachan-Heo/oh-my-claudecode, covering oh-my-claudecode - intelligent multi-agent orchestration, working agreements, setup and review guidelines.
oh-my-claudecode CLAUDE.md
Claude Code instructions for Yeachan-Heo/oh-my-claudecode, covering oh-my-claudecode - intelligent multi-agent orchestration and setup.
rp1 AGENTS.md
Instructions for rp1-run/rp1, covering rp1 agent authoring guide, core rules, namespace prefixes, subagent limitations and codex task shorthand.
minimax-h3-opencode-skills AGENTS.md
Instructions for unknowlei/minimax-h3-opencode-skills, covering ai installation contract, install target, required installation and safety.
rp1 CLAUDE.md
Instructions for rp1-run/rp1, covering commit discipline, 1up — agent quick reference, tool selection, setup and commands.
AgentSkills CLAUDE.md
Instructions for HK-hub/AgentSkills, covering claude.md, repository purpose, high-level architecture, 1) skill-oriented monorepo layout and 2) no root build/test pipeline.