Borrowing it
Nothing to install: this file belongs to rodolfochicone/rc-project. 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/rodolfochicone/rc-project/main/AGENTS.mdgit clone --depth 1 https://github.com/rodolfochicone/rc-projectWrote 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/rodolfochicone/rc-project/agents-md)<a href="https://agentmods.dev/instructions/rodolfochicone/rc-project/agents-md"><img src="https://agentmods.dev/badge/instructions/rodolfochicone/rc-project/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/rodolfochicone/rc-project/agents-md"><img src="https://agentmods.dev/badge/instructions/rodolfochicone/rc-project/agents-md.svg" alt="Reviewed on agentmods" width="80" 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 | $0.01574 | $0.01574 |
| Opus 5.5 | $0.00630 | $0.00630 |
| Sonnet 5.5 | $0.00315 | $0.00315 |
| Haiku 4.5 | $0.00157 | $0.00157 |
Grade A, and why
rc-project 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 1mo 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 — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Guidance for coding agents working in this repository. RC is a pure agent plugin — skills, agents and hooks, plus a few small Node/Bash helpers. No compiled binary, no build step, no CLI.
Project overview
RC drives AI-assisted development — spec → tickets → implement → review → ship — through components
the agent host loads. It ships as a Claude Code plugin, and nothing in the shipped set is coupled to a
host-exclusive tool; all runtime state is plain files under a project's .rc/.
Three primitives, one job each: hooks hold rules that must apply every time, skills hold the disciplines the agent reaches for, agents exist for context isolation. A component in the wrong primitive is the most common defect in this repo — a sequence of skills is not a skill, and an every-time rule written as prose is not enforced.
Repository layout
| Path | Contents |
|---|---|
skills/promoted/<name>/SKILL.md |
The 17 shipped skills. Each: frontmatter + optional references/, assets/, scripts/. |
skills/stacks/<name>/ |
Stack skills, not shipped — loaded by name when working that stack. |
skills/misc/<name>/ |
Kept on disk, not shipped. Zero context cost. |
agents/<name>.md |
The four council archetypes, dispatched by rc-council. |
commands/<name>.md |
Two thin prompt macros with no skill behind them. |
hooks/hooks.json + hooks/scripts/*.sh |
Lifecycle hooks (bash), gated via _lib.sh. |
scripts/*.mjs |
plugin-smoke.mjs (the gate), validate-tasks.mjs, lessons.mjs. |
docs/ |
Human-facing docs. |
.claude-plugin/ |
plugin.json + marketplace.json. |
The budget that shapes everything
Every shipped description loads in every session, against the host's skill-listing budget
(skillListingBudgetFraction, 1% of context by default). Over budget, the host drops descriptions
and the skill goes mute — present by name, nothing to match against. That is why:
- Only
skills/promoted/is inplugin.json. Adding tostacks/ormisc/is free; promoting is the deliberate trade. - Promoted descriptions are capped at 150 characters, trigger plus anti-trigger.
PROMOTED_CEILINGinplugin-smoke.mjsis 17. To cross it: merge one, demote one, or raise the constant on purpose.
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.
- 1mo ago First seen · 106 lines · 1,574 tokens per session scan A 01c41fe9693b
rc-project AGENTS.md is an instructions file published in the GitHub repository rodolfochicone/rc-project (19 stars, last pushed 2mo ago), licensed MIT. It adds 1,574 tokens to every session, about $0.0063 per session on Opus 5.5. 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
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.