Compare 2+ products side-by-side on environmental impact metrics for Claude Code. Validates comparability, normalizes declared units, generates percentage deltas, and checks LEED v4.1 MRc2 eligibility.
# Via plugin system
claude plugin marketplace add AlpacaLabsLLC/skills-for-architects
claude plugin install 05-sustainability@skills-for-architects
# Or symlink just this skill
git clone https://github.com/AlpacaLabsLLC/skills-for-architects.git
ln -s $(pwd)/skills-for-architects/plugins/05-sustainability/skills/epd-compare ~/.claude/skills/epd-compareAfter parsing or researching EPDs:
/epd-compare compare the CLT EPDs I just found
Or with inline data:
/epd-compare concrete A: 320 kg CO2e/m3, concrete B: 280 kg CO2e/m3, concrete C: 410 kg CO2e/m3
- Declared unit alignment — warns if units differ and normalization isn't possible
- System boundary — flags cradle-to-gate vs. cradle-to-grave mismatch
- PCR alignment — notes when products use different Product Category Rules
- EN 15804 version — flags +A1 vs. +A2 differences
- Validity — marks expired EPDs
- EPD type — distinguishes product-specific from industry-average
Output includes side-by-side impact tables, percentage deltas relative to lowest-impact option, industry average baselines, and LEED v4.1 MRc2 assessment.
| File | Purpose |
|---|---|
SKILL.md |
Comparison workflow, comparability checks, industry baselines, LEED assessment |
MIT