cursorrules

cursorrules is a cursor rule for Cursor from The-Focus-AI/buttondown-mcp. It costs 266 tokens per session, scanned A, original, MIT.

A rules file that stores memories and user preferences across coding sessions, such as preferred package managers and technical decisions.

In plain words
What is it for?
For recording project-specific memories, workflow patterns, package choices, and other instructions when the user asks the assistant to remember them.
Why use it?
It keeps recurring instructions available so they do not need to be repeated in every session.

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/the-focus-ai/buttondown-mcp/cursorrules
Clone the repo
git clone --depth 1 https://github.com/The-Focus-AI/buttondown-mcp

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/the-focus-ai/buttondown-mcp/cursorrules.svg)](https://agentmods.dev/rules/the-focus-ai/buttondown-mcp/cursorrules)
Your own site
<a href="https://agentmods.dev/rules/the-focus-ai/buttondown-mcp/cursorrules"><img src="https://agentmods.dev/badge/rules/the-focus-ai/buttondown-mcp/cursorrules.svg" alt="Measured on agentmods" height="20"></a>
Per session 266 This file is loaded in full into every session.
When invoked 266 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 $0.00266 $0.00266
Opus 5 $0.00133 $0.00133
Sonnet 5 $0.00053 $0.00053
Haiku 4.5 $0.00027 $0.00027

Measured 3d ago against content hash a640314d1bfd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

.cursorrules · 50 lines

What it actually says

Cursor Memories and Preferences

This file stores important memories and preferences that should be remembered across sessions. It is automatically updated whenever the user says "remember" something.

Structure

Each memory or preference is stored with:

  • Date added
  • Category
  • Content
  • Context (if relevant)

Memories

Project-Specific

  • [No memories yet]

User Preferences

  • Date: 2024-03-26 Category: Package Manager Content: Always use pnpm as the package manager Context: This is the preferred package manager for all Node.js projects

Technical Decisions

  • Date: 2024-03-26 Category: API Development Content: When building an API, always directly hit the API and store the results in a directory, and then build the types based upon the results Context: This approach ensures type definitions are based on actual API responses rather than theoretical structures

Workflow Patterns

  • [No patterns yet]

How to Use

When the user says "remember" something:

  1. Add the new memory/preference to the appropriate section
  2. Include the date it was added
  3. Add any relevant context
  4. Format it clearly for future reference

Last Updated

2024-03-26

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. 3d ago First seen · 50 lines · 266 tokens per session scan A a640314d1bfd

Subscribe to this mod's changes

cursorrules is a cursor rule published in the GitHub repository The-Focus-AI/buttondown-mcp (1 stars, last pushed 1y ago), licensed MIT. It adds 266 tokens to every session, about $0.0013 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 2026-08-31.

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