Tailor: Cursor rule for Cursor

.cursorrules

cursorrules is a cursor rule for Cursor from AmanKtyr/Tailor. It costs 689 tokens per session, scanned A, a copy of tailor, MIT.

Repository rules for an AI coding agent that describe how to understand the project, reuse existing code, plan larger changes, and verify results. Tailor is the project-intelligence system named by these rules.

In plain words
What is it for?
Use them before substantial changes to consult the project's constitution and index, search for reusable components and utilities, prefer built-in features, follow the specification workflow, and run targeted tests.
Why use it?
They help the agent follow the repository's decisions and avoid duplicating code or claiming checks passed without evidence. They also provide a consistent process for changes that are more than simple edits.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

This is AmanKtyr/Tailor's own configuration. It tells Cursor how to work on Tailor itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Tailor configures →

Reuse

Borrowing it

Nothing to install: this file belongs to AmanKtyr/Tailor. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/AmanKtyr/Tailor/main/.cursorrules
Clone the repo
git clone --depth 1 https://github.com/AmanKtyr/Tailor

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 cursorrules

README.md
[![agentmods](https://agentmods.dev/badge/rules/amanktyr/tailor/cursorrules/github.svg)](https://agentmods.dev/rules/amanktyr/tailor/cursorrules)
Your own site
<a href="https://agentmods.dev/rules/amanktyr/tailor/cursorrules"><img src="https://agentmods.dev/badge/rules/amanktyr/tailor/cursorrules/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.

agentmods 80×15 button for cursorrules

Your own site · 80×15
<a href="https://agentmods.dev/rules/amanktyr/tailor/cursorrules"><img src="https://agentmods.dev/badge/rules/amanktyr/tailor/cursorrules.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 689 This file is loaded in full into every session.
When invoked 689 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 92% copy Near-identical to another mod 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 5.1 $0.00689 $0.00689
Opus 5.5 $0.00276 $0.00276
Sonnet 5.5 $0.00138 $0.00138
Haiku 4.5 $0.00069 $0.00069

Measured 1mo ago against content hash 75d53c701b29, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cursorrules 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.

Origin

This is a copy

92% identical to tailor — 5 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.cursorrules · 36 lines

How it starts

The opening of the file, as written. The whole thing — 36 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AI Agent Guidance (Powered by Tailor)

This repository uses Tailor for project intelligence, Spec-Driven Development, and Reuse-First engineering discipline.

Non-Negotiable Directives

1. Cold-Start & Project Memory Hierarchy

  • Always consult .ai/CONSTITUTION.md and .ai/INDEX.md first before planning or making non-trivial modifications.
  • Cold-Start Fallback: If the .ai/ directory does not exist yet, do NOT invent arbitrary conventions. Inspect package.json (or workspace manifests) and active source files directly to determine established patterns, and suggest running npx @amanktyr/tailor init to establish project memory.

2. Mandatory Guardrail: Zero Unrequested Styling & Redesign

  • STRICTLY PROHIBITED: NEVER add, alter, or inject CSS, styling frameworks, inline styles, gradients, glassmorphism, or animations unless the user explicitly requested visual or styling changes.
  • When working on logic, bugfixes, refactoring, or state management: preserve existing visual markup and styling tokens untouched.
  • When writing UI components: strictly reuse existing design tokens, components, and CSS classes from the codebase or .ai/UI.md. Never invent new arbitrary classes, hex colors, or custom styling rules.
  • If the project has no styling system and no styling is requested, output clean, unstyled semantic HTML.

3. Mandatory Guardrail: Zero Bloat & Minimal Diff Discipline (Anti-Slop)

  • Implement only the minimal code required to satisfy the user's specific request.
  • NO speculative abstractions: Do not create premature wrapper classes, generic factories, or speculative interfaces for one-off operations.
  • NO dummy/mock data: Never add mock datasets, fake user lists, or placeholder fixtures in production code.
  • NO filler comments: Never write redundant explanatory comments (e.g. // Here we define the function) that state the obvious. Only document why non-obvious business logic or security decisions exist.

Read the full file on GitHub · 36 lines

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. 1mo ago Changed · +25 lines · +499 tokens per session 75d53c701b29
  2. 1mo ago First seen · 11 lines · 190 tokens per session scan A 5fc9965b1ad7

Subscribe to this mod's changes

cursorrules is a cursor rule published in the GitHub repository AmanKtyr/Tailor (6 stars, last pushed 11d ago), licensed MIT. It adds 689 tokens to every session, about $0.0028 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 92% identical to tailor, differing in 5 lines, and is treated as a copy.