00-project-core

00-project-core is a cursor rule for Cursor from cembasaranoglu/crafting-system-claude. It costs 177 tokens per session, scanned A, original, MIT.

A set of core rules for working on a code repository with AI assistance.

In plain words
What is it for?
Use it to guide repository inspections, code changes, documentation updates, validation reports, and safe handling of assistant-generated files.
Why use it?
It helps prevent unsupported claims, accidental scope changes, leaked secrets, and undocumented changes to related interfaces or tests.

Cursor rule for Cursor

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 rules/cembasaranoglu/crafting-system-claude/00-project-core
Clone the repo
git clone --depth 1 https://github.com/cembasaranoglu/crafting-system-claude

Made for: Cursor.

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 00-project-core

README.md
[![agentmods](https://agentmods.dev/badge/rules/cembasaranoglu/crafting-system-claude/00-project-core.svg)](https://agentmods.dev/rules/cembasaranoglu/crafting-system-claude/00-project-core)
Your own site
<a href="https://agentmods.dev/rules/cembasaranoglu/crafting-system-claude/00-project-core"><img src="https://agentmods.dev/badge/rules/cembasaranoglu/crafting-system-claude/00-project-core.svg" alt="Measured on agentmods" height="20"></a>
Per session 177 This file is loaded in full into every session.
When invoked 177 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 $0.00177 $0.00177
Opus 5 $0.00088 $0.00088
Sonnet 5 $0.00035 $0.00035
Haiku 4.5 $0.00018 $0.00018

Measured yesterday against content hash 99643c02ea96, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

00-project-core 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 yesterday.

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.

cowork/skills/templates-library/references/.cursor/rules/00-project-core.mdc · 17 lines

What it actually says

Core Project Rules

  • Inspect source before making claims.
  • Treat the latest user instruction as highest priority unless it conflicts with safety or repository truth.
  • Do not fabricate files, code behavior, tests, builds, deployments, or readiness.
  • Keep changes scoped to the active task.
  • Do not commit secrets, local paths, environment files, chat transcripts, scratch logs, or assistant run outputs.
  • Keep assistant artifacts outside the shipped repository unless explicitly requested.
  • Do not create wrapper directories like source_code/, workspace/, generated_repo/, final/, output/, or artifacts/ inside the shipped repo.
  • Update tests/docs/config/schema/API/CLI parity when changed surfaces require it.
  • Report validation honestly with exact commands and not-run items.
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. yesterday First seen · 17 lines · 177 tokens per session scan A 99643c02ea96

Subscribe to this mod's changes

00-project-core is a cursor rule published in the GitHub repository cembasaranoglu/crafting-system-claude (5 stars, last pushed 4mo ago), licensed MIT. It adds 177 tokens to every session, about $0.0009 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 2026-09-03.