Audit, substantiate and approve sustainability claims.

Mossy helps communications, sustainability and legal teams find risky claims, connect the evidence, fix what is weak, and keep an audit trail of every decision — before anything goes public.

Mossy is a governance tool for sustainability communication.

9
Regulatory frameworks
46
Criteria evaluated
120
Pages per website audit
5–15 sec
Per claim scan
3 FREE SCANS · NO SIGN-UP

Mossy Message Scan

Step 1 of 2 — scan a single claim or piece of copy. Then audit your whole website.

Quick claim & image check on a single piece of copy or visual. Instant verdict against nine regulatory frameworks — no account required.

Step 01 / Submit evidence

STEP 01 · SUBMIT EVIDENCE

This tool uses artificial intelligence to analyse your content. Results are AI-generated and should be reviewed by a qualified professional before acting on them.

How is my data handled? FAQ

0 / 500 — free trial limit. Upgrade for up to 8,000.
Try an example:

Free account — up to 3 pages. Upgrade to Pro to scan up to 10 pages. Counts as one Message Scan, however many pages are read.

Submissions are sent to an AI model for analysis. Don’t upload private or sensitive material.

The Verdict

Step 02 / Review findings
Submit text or an image above to see flags, severity, and recommendations.

STEP 02 · THE VERDICT

This is what a real Mossy scan looks like.

Our products are made with sustainable materials and have a reduced environmental impact.

HIGH RISK90/100

This claim combines two unqualified environmental assertions with no supporting evidence. “Sustainable materials” is undefined, and “reduced environmental impact” gives no baseline, scope or verification — a combination regulators commonly treat as a vague, unsubstantiated green claim.

Definition

What is greenwashing?

The practice of making a product, service or company appear more environmentally friendly than it really is — through vague claims, fake eco-labels, selective data, misleading imagery or unsupported promises.

Mossy is a communication tool, not a courtroom. It surfaces the gaps so brands can communicate sustainability more honestly.

1
Be specific

Numbers, scope, dates — no vague hand-waving.

2
Show the evidence

Link to data, methods, or third-party assurance.

3
Mind the imagery

Green leaves don't equal a green product.

4
Talk trade-offs

Honest beats heroic. Acknowledge what you haven't solved.

+ 4 more principles in the full guide

Who uses Mossy?

From marketing teams checking claims before publication to agencies auditing client websites — Mossy fits where sustainability communications get reviewed.

Pre-publication reviewBrand riskCampaigns

Marketing & Communications

Check claims before they go live. Catch risky language in ads, packaging, social posts and press releases before it becomes a liability.

Scan a claim — free →
CSRD reportingESG disclosuresEvidence

Sustainability Teams

Connect your sustainability claims to evidence. Identify gaps between what you report and what you communicate publicly.

Audit your website →
Client workScalable reviewShareable reports

Consultants & Agencies

Add a defensible methodology to your sustainability advisory work. Scan client content, share results, and deliver faster.

See Pro plans →

“We used Mossy to check the sustainability communications across the websites of our Group companies, advertising campaigns and product packaging labels. The tool showed us the non-compliance risk for each item against the main regulatory references. We received a concrete, easy-to-implement action plan — which helped us share findings across responsible teams more effectively. For the agri-food sector, Mossy promotes transparency in an industry strongly affected by climate change and growing sustainability demands from both clients and consumers.”

Clara Rodrigues
Corporate Sustainability Strategy & Reporting
Grupo Lusiaves
Lusiaves

Both tools are grounded in the PhD research of Dr. S. Rêgo, Universidade do Minho.

Aligned withISO 14021FTC Green GuidesUK Green Claims CodeCSRDEU 2024/825CSDDDEU Green Claims Directive (proposed)Australian Consumer Law — ACCCDutch ACM Sustainability Claims Guidelines

Trusted by

Lusiaves

As seen in

Greensavers
Pro · From €149 single / €349 yr

Mossy Website Audit

A communication tool, not a courtroom. Drop in a company URL — Mossy crawls up to 120 pages of your public website — including homepage, about page, sustainability hub, governance pages, and linked reports — and shows where the sustainability story is strong, where it is vague, and exactly what to improve.

Built on Rêgo, S. (2024). Comunicação para a Sustentabilidade, PhD thesis, Universidade do Minho.

Step 03 / Audit a company
CContent

What you say, and how clearly you say it.

AAim

Whether sustainability sits in your purpose, mission and values.

RReporting

Targets, governance and transparent disclosure.

EEngagement

Real two-way dialogue with your stakeholders.

How it works
  1. 1. Crawl. Mossy reads up to 14 pages — homepage, about, mission, ESG, reports.
  2. 2. Score. Each pillar gets a 0–100 score against ISO 14021 (International), FTC Green Guides (US), UK Green Claims Code — CMA (UK), CSRD / ESRS (EU), EU Directive 2024/825 — ECGT (EU), CSDDD (EU), EU Green Claims Directive (proposed) (EU), Australian Consumer Law — ACCC (AU), and Dutch ACM Sustainability Claims Guidelines (NL).
  3. 3. Improve. You get strengths, gaps, quotes and prioritised next steps you can act on this week.
Verdict scale
Weak0–34

Cliché claims, no evidence.

Developing35–59

Some commitments, key gaps.

Credible60–79

Substantiated, governed claims.

Exemplary80–100

Mature, assured, two-way.

Paste the homepage URL — Mossy will find the sustainability pages automatically.

Is this company subject to CSRD mandatory reporting??

Crawls up to 120 pages of your public website — including homepage, about page, sustainability hub, governance pages, and linked reports — and analyses text, images, and claims across the full sustainability web presence. A full website audit typically takes 5–10 minutes.

FAQ

Pricing, privacy, supported frameworks and how the score is calculated — answered.

See FAQ →
Ready for the full audit?

Unlimited audits, history & PDF exports from €49.

Go Pro

Talk to us.

Enterprise enquiry, partnership, research collaboration, or just a question — we're here.

In partnership withEarthwise Alliance