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 skills/ralfstrobel/agentic-brownfield-coding/monoreponpx skills add ralfstrobel/agentic-brownfield-coding --skill monorepogit clone --depth 1 https://github.com/ralfstrobel/agentic-brownfield-codingWrote 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/skills/ralfstrobel/agentic-brownfield-coding/monorepo)<a href="https://agentmods.dev/skills/ralfstrobel/agentic-brownfield-coding/monorepo"><img src="https://agentmods.dev/badge/skills/ralfstrobel/agentic-brownfield-coding/monorepo.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 | $0.00024 | $0.03545 |
| Opus 5 | $0.00012 | $0.01773 |
| Sonnet 5 | $0.00005 | $0.00709 |
| Haiku 4.5 | $0.00002 | $0.00354 |
Grade B, and why
monorepo 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 4d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
1. Copy the [settings template](./templates/settings-template.json) to `<project-dir>/.claude/settings.json` How it starts
The opening of the file, as written. The whole thing — 241 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Code Monorepo Scaffolding
Your goal is to create an initial setup for Claude Code in a large pre-existing monorepo project, including agent instructions and context information. You work in close collaboration with the user to obtain the required base knowledge about the goals and structure of the project as well as each sub-project.
Additional user arguments: $ARGUMENTS
Language hint: Always create all generated document content in English, while continuing to speak to the user in the language of their choice.
Platform hint: Instructions and templates assume a Linux host with GNU coreutils. Adapt to the detected user OS.
- macOS — Substitute BSD equivalents for GNU-only utilities.
- Windows — Still use
.shfiles (skip irrelevantchmod +x), assuming Git Bash is available at runtime. Highlight this requirement in the Debriefing. Set"shell": "bash"on command hooks insettings.json. Omit the entiresandboxblock fromsettings.jsonas long as bash sandboxing is unsupported.
Agent Content Principles
When generating content for .md files below, you are writing prompts and context for other AI coding agents.
Follow these principles to optimally tailor your instructions to their needs:
- Concise — Minimize token usage. Prefer keywords and terse bullet points over prose.
- Structured — Use compact Markdown to delineate connected aspects.
- Actionable — Generate concrete operational directives, not abstract guidelines. Avoid aspirational quality statements, general engineering practices, blanket prohibitions.
- Referential — Provide pointers to key code files the agents can read themselves. Do not describe how code works in agent instructions as such duplication leads to drift.
- Scoped — Context is hierarchical. The central CLAUDE.md applies to every scope and must only contain core project identity and semantics. Sub-project CLAUDE.md, rules and agent instructions progressively disclose domain- and task-specific knowledge.
- Durable — Only include details that remain invariant under normal codebase evolution. Avoid specific technology versions. Reference namespaces or search terms instead of single artifacts.
What ships with it
11 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- templates/CLAUDE-local-example.md 180 B
- templates/CLAUDE-template.md 1.1 KB
- templates/post-edit-hook.sh 2.5 KB runs code
- templates/rule-code-style.md 1.3 KB
- templates/rule-testing.md 1.3 KB
- templates/settings-template.json 2.2 KB
- templates/statusline.sh 1.9 KB runs code
- templates/stop-hook.sh 7.7 KB runs code
- templates/sub-project-CLAUDE-template.md 335 B
- templates/sub-project-explorer-agent.md 3.2 KB
- templates/sub-project-rule-template.md 379 B
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.
- 4d ago First seen · 241 lines · 24 tokens per session scan B b0c9aaa8fcbb
monorepo is a skill published in the GitHub repository ralfstrobel/agentic-brownfield-coding (28 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 24 tokens to every session and 3,545 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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