epd-compare
Compare 2+ products side-by-side on environmental impact metrics. Normalizes declared units, checks system boundary alignment, and flags LEED MRc2 compliance.
npx skills add majiayu000/claude-skill-registry --skill epd-compare --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# /epd-compare — EPD Comparator Compare 2 or more products side-by-side on environmental impact metrics. Validates comparability (declared units, system boundaries, PCR alignment), generates comparison tables with percentage deltas, and checks LEED v4.1 MRc2 eligibility. This skill **reads** from the EPD Google Sheet but does **not write** to it. Output is a markdown comparison report. ## Input The user provides EPD data in one of these ways: 1. **Sheet row references** — "compare rows 5, 8, and 12" from the EPD Google Sheet 2. **Inline data** — pasted product names with GWP values 3. **File path** — a CSV or markdown file with EPD data 4. **From prior skills** — "compare the EPDs I just parsed/found" (uses data from the current conversation) 5. **Mixed** — "compare this PDF I just parsed against what's in the sheet" If the user doesn't specify a source, ask: **"Where is the EPD data? Sheet rows, pasted values, or from earlier in this conversation?"** ## Workflow ### Step 1: Collect data Gather EPD data from the specified source. For each product, you need at minimum: - Product name and manufacturer - GWP (A1-A3) value - Declared unit Additional fields improve the comparison: ODP,
- Input
- Workflow
- Step 1: Collect data
- Step 2: Validate comparability
- Step 3: Generate comparison
- Step 4: Recommendation summary
- Step 5: Save output
- Edge Cases
- Notes
What does the epd-compare skill do?
Compare 2+ products side-by-side on environmental impact metrics. Normalizes declared units, checks system boundary alignment, and flags LEED MRc2 compliance.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill epd-compare --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.