Run2 anthropic brand typography

Skill cxcscmu/SkillLearnBench/skills/b3-teacher-feedback-claude-opus-4-6/anthropic-poster-design/run2_anthropic-brand-typography

[COLM'26] SkillLearnBench is the first benchmark for evaluating continual learning methods that automatically generate agent skills.

Install

npx -y skills add cxcscmu/SkillLearnBench --skill run2_anthropic-brand-typography

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

What its author says it does

Copied from the file, not written here

Use this skill when selecting and applying fonts for Anthropic brand materials. Specifies the official heading and body typefaces with correct fallback chains.

SKILL.md

2.8 KB, as published. Nobody here has run it

Anthropic Brand Typography

Heading Font

Primary: Poppins (geometric sans-serif)
Fallback: Arial
Usage: All headings, product titles (e.g., "NOVA"), section headers
Weight: Bold (700) for primary titles; SemiBold (600) for subheadings
Style: Typically uppercase or title-case for product names

Body Font

Primary: Lora (serif)
Fallback: Georgia
Usage: Body text, annotations, technical descriptions, captions
Weight: Regular (400) for body; Medium (500) for emphasized annotations

Font Discovery Logic (Python / Pillow)

When rendering with Pillow, use this search order:

import os
from PIL import ImageFont

def find_font(font_names, size=48):
    """Search for fonts in common system paths, return first found."""
    search_paths = [
        "/usr/share/fonts",
        "/usr/local/share/fonts",
        "/root/.fonts",
        "/root/.local/share/fonts",
        "/System/Library/Fonts",
    ]
    for font_name in font_names:
        # Try direct load
        for ext in [".ttf", ".otf"]:
            try:
                return ImageFont.truetype(font_name + ext, size), font_name
            except (OSError, IOError):
                pass
        # Walk search paths
        for base in search_paths:
            if not os.path.isdir(base):
                continue
            for root, dirs, files in os.walk(base):
                for f in files:
                    if font_name.lower().replace(" ", "") in f.lower().replace(" ", ""):
                        if f.endswith((".ttf", ".otf")):
                            try:
                                path = os.path.join(root, f)
                                return ImageFont.truetype(path, size), font_name
                            except (OSError, IOError):
                                pass
    # Ultimate fallback: Pillow default
    return ImageFont.load_default(), "default"

# For headings:
heading_font, heading_font_name = find_font(["Poppins-Bold", "Poppins", "Arial-Bold", "Arial"], size=72)

# For body/annotations:
body_font, body_font_name = find_font(["Lora-Regular", "Lora", "Georgia", "Arial"], size=24)

Important Notes

The applied_heading_font field in design_parameters.json must reflect whichever font was actually loaded — "Poppins" if found, otherwise the fallback name (e.g., "Arial").
Never use Styrene A, Inter, or IBM Plex Sans as Anthropic brand fonts.
Install Poppins via pip install fonts-poppins or download from Google Fonts if not present on the system. Attempt apt-get install -y fonts-poppins or manually download to /root/.fonts/.