tell-proof: Skill for Cursor

.cursor/skills/tell-redesign-diff/SKILL.md

tell-redesign-diff is a skill for Cursor from ashishpatill/tell-proof. It costs 56 tokens per session (456 once invoked), scanned A, original, MIT.

Code that turns Tell's design findings into deterministic, reviewable CSS or token changes. It also checks readable color pairings and supports previewing a before-and-after split.

In plain words
What is it for?
Use it to reconcile design tokens, generate patches for a repository or URL, build preview styles, and create fixes for individual findings.
Why use it?
It keeps proposed fixes consistent and helps protect text contrast while changing a site's appearance.

Skill for Cursor

Written for Cursor: installed under .cursor/.

This is ashishpatill/tell-proof's own configuration. It tells Cursor how to work on tell-proof 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 tell-proof configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ashishpatill/tell-proof. 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/ashishpatill/tell-proof/master/.cursor/skills/tell-redesign-diff/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/ashishpatill/tell-proof

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 tell-redesign-diff

README.md
[![agentmods](https://agentmods.dev/badge/skills/ashishpatill/tell-proof/tell-redesign-diff.svg)](https://agentmods.dev/skills/ashishpatill/tell-proof/tell-redesign-diff)
Your own site
<a href="https://agentmods.dev/skills/ashishpatill/tell-proof/tell-redesign-diff"><img src="https://agentmods.dev/badge/skills/ashishpatill/tell-proof/tell-redesign-diff.svg" alt="Measured on agentmods" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 456 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 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 $0.00056 $0.00456
Opus 5 $0.00028 $0.00228
Sonnet 5 $0.00011 $0.00091
Haiku 4.5 $0.00006 $0.00046

Measured 4d ago against content hash 3d9ddbad2425, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

tell-redesign-diff 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 4d 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/skills/tell-redesign-diff/SKILL.md · 49 lines

What it actually says

Tell redesign and reconciliation

Scope

  • packages/redesign/src/reconcile.ts — token reconciliation for live seam
  • packages/redesign/src/measures.ts — contrast and readable pairing checks
  • packages/redesign/src/index.tsOfflineRedesignGenerator
  • apps/web/src/lib/cursor-redesign.ts — Cursor SDK enhancement with deterministic fallback

Rules

  1. packages/redesign is deterministic: no LLM, network, browser, or Cursor SDK
  2. Reconciliation must preserve or improve measured foreground/background contrast
  3. Only force text colors inside surfaces Tell also controls
  4. Live seam CSS and emitted patch must match (OfflineRedesignGenerator = seam preview)
  5. Never auto-apply patches; return reviewable unified diffs only

Direction presets

editorial, precision, warm-minimal, bold-contrast, luxury, brutalist, explainer

Adding a new preset requires a full recipe (not accent-only) and the playbook in docs/08_AI_DESIGN_METHODS.md §5.

Output paths

  1. Repo path known → token changes in tailwind config + CSS variables
  2. URL-only flow → standalone tell-overrides.css via buildOverridesPatch
  3. Per-finding fix → minimal diff targeting one tell

Web enhancement

When CURSOR_API_KEY exists, /api/redesign may call Cursor SDK, then fall back to deterministic output on timeout, auth failure, or invalid JSON.

DoD

  • Reconciliation table and seam show the same token deltas
  • Contrast ratios called out for text and controls
  • Patch is copyable and human-reviewable
  • Rules: .cursor/rules/tell-redesign.mdc
  • Design system §2.4 contrast notes: docs/01_DESIGN_SYSTEM.md
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. 4d ago First seen · 49 lines · 56 tokens per session scan A 3d9ddbad2425

Subscribe to this mod's changes

tell-redesign-diff is a skill published in the GitHub repository ashishpatill/tell-proof (1 stars, last pushed 12d ago), licensed MIT. It adds 56 tokens to every session and 456 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 2026-09-03.

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