main-optimized

An optimized main rule intended to reduce the number of tokens used during work. The input does not explain which tasks it governs or how it changes the workflow.

In plain words
What is it for?
It is for use as a main rule when token efficiency is a priority, although its concrete instructions are not provided.
Why use it?
The description claims an efficiency goal but does not identify a specific problem or method.

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/alkoleft/mcp-onec-test-runner/main-optimized
Clone the repo
git clone --depth 1 https://github.com/alkoleft/mcp-onec-test-runner

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 2,116 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00000 $0.02116
Opus 5 $0.00000 $0.01058
Sonnet 5 $0.00000 $0.00423
Haiku 4.5 $0.00000 $0.00212

Measured 3d ago against content hash f2ef9192a426, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

main-optimized 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.

.cursor/rules/isolation_rules/main-optimized.mdc · 237 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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 · 237 lines · 0 tokens per session scan A f2ef9192a426

Subscribe to this mod's changes

main-optimized is a cursor rule published in the GitHub repository alkoleft/mcp-onec-test-runner (109 stars, last pushed 5mo ago), licensed GPL-3.0. It costs nothing until one of its globs matches a file; then it loads 2,116 tokens. 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 2026-08-30.