Two design skills · both proven

crypto-protocol-diagram vs theme-factory

Both skills were run through Claude twice: once on a fixed brief without the skill, once with it. The briefs differ because each is written for the job the skill claims to do, so compare each skill against its own baseline, then decide which difference matters for your work.

crypto-protocol-diagram

Extracts protocol message flow from source code, RFCs, academic papers, pseudocode, informal prose, ProVerif (.pv), or Tamarin (.spthy) models and generates Mermaid sequenceDiagrams with cryptographic annotations. Use when diagramming a crypto protocol, visualizing a handshake or key exchange flow, extracting message flow from a spec or RFC, diagramming a ProVerif or Tamarin model, or drawing…

Category: Design
Source: trailofbits/skills
License: Other
Proof model: claude-opus-5-5
Brief: “Draw the message flow of this login protocol as a single HTML page with an SVG sequence diagram, and note any weaknesses. 1. Client sends username to server. 2. Server replies with a random 16-byte nonce and the user's salt. 3. Client computes H = SHA-256(salt || password) and sends HMAC-SHA256(key=H, msg=nonce). 4. Server looks up stored H, computes the same HMAC and compares. 5. On success the server returns a session token valid for 30 days.”
Skill commit: 2be6433

Without the skillWith crypto-protocol-diagram

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Without, runWith crypto-protocol-diagram, run3 independent runs per side, none selected by hand.

Download the with-skill page

theme-factory

Toolkit for styling artifacts with a theme. These artifacts can be slides, docs, reportings, HTML landing pages, etc. There are 10 pre-set themes with colors/fonts that you can apply to any artifact that has been creating, or can generate a new theme on-the-fly.

Category: Design
Source: anthropics/skills
License: Not stated
Proof model: claude-opus-5-5
Brief: “Build the one-page invitation site for the Harvest Table, a community garden's autumn dinner: a hero with the date and place, the story of the garden, the menu by course, the people cooking, a map drawn in inline SVG, and an RSVP form with success and error states. Make it feel warm and finished.”
Skill commit: dbd4588

Without the skillWith theme-factory

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Without, runWith theme-factory, run3 independent runs per side, none selected by hand.

Download the with-skill page

We don’t pick a winner for you: the pages are the evidence. Both proofs can be repeated with the brief, model and commit shown above. See alternatives to crypto-protocol-diagram or alternatives to theme-factory.