FEATURE_BOUNDARIES

FEATURE_BOUNDARIES is a cursor rule for Cursor from Trustless-Work/trustlesswork-backoffice. It costs 353 tokens per session, scanned A, original, no licence file.

A set of rules for keeping software features separate from one another. It prevents one feature from importing another feature's internal implementation.

In plain words
What is it for?
It guides code structure and import decisions when adding or changing features.
Why use it?
It reduces hidden dependencies between features, making changes less likely to break unrelated parts of the application.

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/trustless-work/trustlesswork-backoffice/feature_boundaries
Clone the repo
git clone --depth 1 https://github.com/Trustless-Work/trustlesswork-backoffice

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 FEATURE_BOUNDARIES

README.md
[![agentmods](https://agentmods.dev/badge/rules/trustless-work/trustlesswork-backoffice/feature_boundaries.svg)](https://agentmods.dev/rules/trustless-work/trustlesswork-backoffice/feature_boundaries)
Your own site
<a href="https://agentmods.dev/rules/trustless-work/trustlesswork-backoffice/feature_boundaries"><img src="https://agentmods.dev/badge/rules/trustless-work/trustlesswork-backoffice/feature_boundaries.svg" alt="Measured on agentmods" height="20"></a>
Per session 353 This file is loaded in full into every session.
When invoked 353 The same file — it is already loaded in full.
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 5.1 $0.00353 $0.00353
Opus 5 $0.00177 $0.00177
Sonnet 5 $0.00071 $0.00071
Haiku 4.5 $0.00035 $0.00035

Measured today against content hash 8da8f3d0f8be, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

FEATURE_BOUNDARIES 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 today.

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/FEATURE_BOUNDARIES.mdc · 46 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. today First seen · 46 lines · 353 tokens per session scan A 8da8f3d0f8be

Subscribe to this mod's changes

FEATURE_BOUNDARIES is a cursor rule published in the GitHub repository Trustless-Work/trustlesswork-backoffice (18 stars, last pushed 9d ago), with no licence file. It adds 353 tokens to every session, about $0.0018 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 2026-09-04.