cursor-rule

cursor-rule is a cursor rule for Cursor from jayvee/aigon. It costs 424 tokens per session, scanned A, a copy of aigon, Apache-2.0.

A set of workflow instructions that tells an AI coding assistant which project documents to read and which development rules to follow.

In plain words
What is it for?
Use it to guide coding tasks, feature and research work, development-server startup, and completion-status reporting.
Why use it?
It gives the assistant the project context and prevents workflow mistakes, such as bypassing required commands or state transitions.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc). Also seen: mentions AGENTS.md.

Good fit Use it to guide coding tasks, feature and research work, development-server startup, and completion-status reporting.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/jayvee/aigon/cursor-rule
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.

Clone the repo
git clone --depth 1 https://github.com/jayvee/aigon

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 cursor-rule

README.md
[![agentmods](https://agentmods.dev/badge/rules/jayvee/aigon/cursor-rule/github.svg)](https://agentmods.dev/rules/jayvee/aigon/cursor-rule)
Your own site
<a href="https://agentmods.dev/rules/jayvee/aigon/cursor-rule"><img src="https://agentmods.dev/badge/rules/jayvee/aigon/cursor-rule/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 cursor-rule

Your own site · 80×15
<a href="https://agentmods.dev/rules/jayvee/aigon/cursor-rule"><img src="https://agentmods.dev/badge/rules/jayvee/aigon/cursor-rule.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 424 This file is loaded in full into every session.
When invoked 424 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 100% 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 $0.00424 $0.00424
Opus 5.5 $0.00170 $0.00170
Sonnet 5.5 $0.00085 $0.00085
Haiku 4.5 $0.00042 $0.00042

Measured 1mo ago against content hash 20cbf26cbc4e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cursor-rule 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

100% identical to aigon — 0 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.

templates/generic/cursor-rule.mdc · 28 lines

What it actually says

Aigon

This project uses the Aigon development workflow. Read these docs before starting any work:

  • Agent instructions: AGENTS.md — codebase orientation, module map, coding rules
  • Development workflow: .aigon/docs/development_workflow.md — feature/research lifecycle
  • Agent-specific notes: .aigon/docs/agents/cursor.md

Key Rules

  1. main vs implementation work. Land implementation (any non-trivial code change tied to active feature/research implementation) via the repo's usual feature branch or worktree — not silently on main when isolation is intended. aigon feature-create / research-create, which produce canonical specs under docs/specs/*/00-specs/ in stable-layout repos and visible inbox entries in the lifecycle view, normally do commit to main (or whatever the default integration branch is); do not create a disposable Git branch only to commit a fresh spec.
  2. Use aigon CLI for all state transitions — never move spec files or lifecycle-view entries manually
  3. Use aigon dev-server start for dev servers — never run the project's dev command directly (bypasses port allocation)
  4. Signal when done — run aigon agent-status implementation-complete when implementation is complete
  5. Read the spec first — run aigon feature-spec <ID> to find and read the feature spec before coding
  6. Verify per the project's own conventions — run whatever lint/tests/builds the project defines (check the project's docs) before submitting

Dev Server

NEVER run the project's dev command directly. Use aigon dev-server start which handles port allocation and proxy registration.

If you need to check your dev server URL: aigon dev-server url

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 · 28 lines · 424 tokens per session scan A 20cbf26cbc4e

Subscribe to this mod's changes

cursor-rule is a cursor rule published in the GitHub repository jayvee/aigon (26 stars, last pushed 14d ago), licensed Apache-2.0. It adds 424 tokens to every session, about $0.0017 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to aigon, differing in 0 lines, and is treated as a copy.