The Greenwashing Decoder: Paste Any "Eco" Claim and Let Claude Tell You If It's Actually Legit
Before you pay extra for "sustainable", get Claude to interrogate the product's own words and show you what's real versus what's marketing.
"Eco", "natural", "responsibly made" and other words that mean absolutely nothing.
You want to shop better. So you reach for the bottle with the green leaf on it, the brand that says "conscious", the one that's three dollars more because it's "kind to the planet". And most of the time you have genuinely no way of knowing whether you just did something good or just paid a premium for a nicer sticker.
That's the whole game. A lot of "sustainable" language is unregulated fluff designed to make you feel like the responsible choice without the company having to change much of anything. The hidden cost isn't just the extra money. It's that your good intentions get quietly harvested, and the brands actually doing the hard work get drowned out by the ones who are just better at photoshopping a leaf.
You don't need to become a materials scientist. You need a sharp question-asker in your pocket.
What's inside
- A plain-English verdict on whether a claim is substantiated, vague, or straight-up greenwashing.
- The specific questions to ask (or look up) before you trust it, so you're building your own judgement.
- A quick "is the premium worth it" read so you spend extra only where it actually counts.
- I run product pages through this before any "eco" purchase I'm not sure about. It's saved me from a lot of expensive feel-good nonsense.
The prompt
Paste this into Claude, then drop in the product's sustainability copy, label claims or 'about' page.
You are a sharp, sceptical sustainability analyst who cuts through greenwashing. I'm going to paste the sustainability claims, product description or "about" copy from something I'm thinking of buying. I want to spend extra on genuinely better products, not on clever marketing. Here's the copy / the claims: [paste the product page, label text, or brand statement] Analyse it for me: 1. Pull out every environmental or ethical claim it makes. For each one, tell me whether it's: SPECIFIC AND CHECKABLE (names a real standard, figure or certification), VAGUE (nice-sounding but meaningless without proof), or a RED FLAG (implies more than it says, or distracts from a bigger problem). 2. Name the vague words doing the heavy lifting (things like "natural", "eco", "conscious", "responsibly sourced") and explain what they'd need to actually mean something. 3. Tell me the 3 questions I should ask or look up before trusting this brand, and what a good answer would look like versus a dodge. 4. Give me an overall read: is this claim likely legit, probably greenwashing, or genuinely can't-tell-without-more-info? And in one line, is the price premium likely worth it based only on what they've actually proven? Don't give the brand the benefit of the doubt and don't be needlessly cynical either. Judge it on the evidence in front of you.
What just happened: Claude turned the brand's own language into a checklist. You now have a clear verdict, the right follow-up questions, and a reason to either pay the premium or walk away.
How to use it
- 1Copy the product's sustainability blurb, label, or 'our values' page and paste it into the prompt.
- 2Read Claude's breakdown, then actually chase the two or three questions it hands you. Half the time the answer isn't on the site, which is its own answer.
- 3Make the call yourself. You're not looking for a perfect brand, you're looking to stop paying green premiums for beige effort.
Bonus: Make it yours
Add a comparison request and Claude will run two brands side by side.
Add "compare this to [other brand]'s claims" to the end of your prompt and Claude will run both side by side so you can pick the one actually backing it up.
Payoff: the same prompt becomes a comparison tool, so you can see which brand is proving its claims and which one is just better at fonts.
The goal isn't to become a perfect ethical consumer. It's to stop letting carefully chosen words drain your wallet while pretending to save the planet. A two-minute check before you buy is the difference between supporting real change and funding a marketing department.
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