whygraph-pre-edit

whygraph-pre-edit is a cursor rule for Cursor from mtrdesign/whygraph. It costs 54 tokens per session (1,029 once invoked), scanned A, original, no licence file.

A pre-edit rule that requires checking the intended purpose, constraints, trade-offs, and risks of existing code before changing it. It uses a tool called whygraphrationalebrief for that check.

In plain words
What is it for?
Use it before editing, refactoring, renaming, deleting, or replacing existing code when its original reasoning may matter.
Why use it?
It reduces the chance of breaking behavior that is not obvious from the code itself. It does not apply to new code, typo fixes, or formatting-only changes.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

Good fit Use it before editing, refactoring, renaming, deleting, or replacing existing code when…

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/mtrdesign/whygraph/whygraph-pre-edit
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/mtrdesign/whygraph

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 whygraph-pre-edit

README.md
[![agentmods](https://agentmods.dev/badge/rules/mtrdesign/whygraph/whygraph-pre-edit.svg)](https://agentmods.dev/rules/mtrdesign/whygraph/whygraph-pre-edit)
Your own site
<a href="https://agentmods.dev/rules/mtrdesign/whygraph/whygraph-pre-edit"><img src="https://agentmods.dev/badge/rules/mtrdesign/whygraph/whygraph-pre-edit.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,029 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00054 $0.01029
Opus 5 $0.00027 $0.00515
Sonnet 5 $0.00011 $0.00206
Haiku 4.5 $0.00005 $0.00103

Measured 6d ago against content hash 65c102a567ae, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

whygraph-pre-edit 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 6d 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.

src/whygraph/assets/cursor/rules/whygraph-pre-edit.mdc · 78 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. 6d ago First seen · 78 lines · 54 tokens per session scan A 65c102a567ae

Subscribe to this mod's changes

whygraph-pre-edit is a cursor rule published in the GitHub repository mtrdesign/whygraph (4 stars, last pushed 1mo ago), with no licence file. It adds 54 tokens to every session and 1,029 once invoked, about $0.0003 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 2026-08-31.