agentforge: Cursor rule for Windsurf

.windsurfrules

windsurfrules is a cursor rule for Windsurf from mrzroot/agentforge. It costs 223 tokens per session, scanned A, original, MIT.

A set of project rules for Windsurf and Cascade, coding-agent tools. It describes preferred coding style, a TypeScript and JavaScript stack, Express, testing, architecture, security, and input validation.

In plain words
What is it for?
Use it to guide work on an Express project using TypeScript or JavaScript, including implementation, architecture, security checks, and automated tests.
Why use it?
It gives an agent consistent instructions for making changes in a project and reminds it to protect secrets, validate external input, and add tests.

Cursor rule for Windsurf

Written for Windsurf: a Windsurf rule.

This is mrzroot/agentforge's own configuration. It tells Windsurf how to work on agentforge 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 agentforge configures →

Reuse

Borrowing it

Nothing to install: this file belongs to mrzroot/agentforge. 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/mrzroot/agentforge/master/.windsurfrules
Clone the repo
git clone --depth 1 https://github.com/mrzroot/agentforge

Made for: Windsurf.

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 windsurfrules

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

Your own site · 80×15
<a href="https://agentmods.dev/rules/mrzroot/agentforge/windsurfrules"><img src="https://agentmods.dev/badge/rules/mrzroot/agentforge/windsurfrules.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 223 This file is loaded in full into every session.
When invoked 223 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 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 5.1 $0.00223 $0.00223
Opus 5.5 $0.00089 $0.00089
Sonnet 5.5 $0.00045 $0.00045
Haiku 4.5 $0.00022 $0.00022

Measured 17d ago against content hash 7279c57e7be6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

windsurfrules 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 17d 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.

.windsurfrules · 26 lines

What it actually says

Windsurf & Cascade Directives - Generated by AgentForge

Project: agentforge

Global Instructions

  • Write minimal, concise, and robust code. Avoid over-engineering (YAGNI).
  • Follow language idioms and leverage the standard library before third-party abstractions.
  • Never compromise on security, input validation, error handling, or accessibility.
  • Maintain existing style, patterns, and architectural conventions across edits.

Stack Details

  • Languages: TypeScript, JavaScript
  • Frameworks: Express
  • Test Runner: node test/test.js

Architecture Rules

  • Keep modules focused, decoupled, and single-responsibility.
  • Colocate tests, types, and documentation with the corresponding modules.

Security & Input Sanitization

  • Never hardcode API keys, secrets, credentials, or private tokens in source code or rules.
  • Sanitize and validate all external inputs, request payloads, and query parameters.

Quality & Testing

  • Ensure all new features, edge cases, and bug fixes have automated test coverage.
  • Keep tests deterministic, isolated, and fast.
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. 17d ago First seen · 26 lines · 223 tokens per session scan A 7279c57e7be6

Subscribe to this mod's changes

windsurfrules is a cursor rule published in the GitHub repository mrzroot/agentforge (3 stars, last pushed 2d ago), licensed MIT. It adds 223 tokens to every session, about $0.0009 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 2026-10-09.