nexus-template: Cursor rule for Cursor

.cursorrules

cursorrules is a cursor rule for Cursor from DorianSchlede/nexus-template. It costs 66 tokens per session, scanned A, original, MIT.

Startup instructions for the Nexus operating system inside Cursor, an editor for writing code with AI assistance.

In plain words
What is it for?
They are for starting a session and continuing after an AI context summary.
Why use it?
They tell the agent which setup or resume command to run before responding, so it can restore the correct working context.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

This is DorianSchlede/nexus-template's own configuration. It tells Cursor how to work on nexus-template 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 nexus-template configures →

Reuse

Borrowing it

Nothing to install: this file belongs to DorianSchlede/nexus-template. 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/DorianSchlede/nexus-template/main/.cursorrules
Clone the repo
git clone --depth 1 https://github.com/DorianSchlede/nexus-template

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/dorianschlede/nexus-template/cursorrules/github.svg)](https://agentmods.dev/rules/dorianschlede/nexus-template/cursorrules)
Your own site
<a href="https://agentmods.dev/rules/dorianschlede/nexus-template/cursorrules"><img src="https://agentmods.dev/badge/rules/dorianschlede/nexus-template/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/dorianschlede/nexus-template/cursorrules"><img src="https://agentmods.dev/badge/rules/dorianschlede/nexus-template/cursorrules.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 This file is loaded in full into every session.
When invoked 66 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 $0.00066 $0.00066
Opus 5.5 $0.00026 $0.00026
Sonnet 5.5 $0.00013 $0.00013
Haiku 4.5 $0.00007 $0.00007

Measured 1mo ago against content hash 27fcc8b947b8, 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.

.cursorrules · 20 lines

What it actually says

Nexus Operating System - Cursor Entry Point

Run this BEFORE responding to the user.

Startup

uv run nexus-load --startup

Follow the instructions in the output.

After Context Summary

uv run nexus-load --resume

Follow the instructions in the output.

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 First seen · 20 lines · 66 tokens per session scan A 27fcc8b947b8

Subscribe to this mod's changes

cursorrules is a cursor rule published in the GitHub repository DorianSchlede/nexus-template (8 stars, last pushed 8mo ago), licensed MIT. It adds 66 tokens to every session, about $0.0003 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 2026-08-31.