What does the Merewyn skill do?

Report sustainability defensibly: run double materiality, build the GHG inventory, and word claims so they survive assurance. Load it once into Claude Projects and you get a configured Sustainability & ESG Reporting Manager without re-explaining context at the start of every session. Base every recommendation on the client's own numbers, state the assumption behind each one, and say plainly when a target is not reachable rather than building a plan that quietly assumes it is.

How do I install this skill file?

Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.

Which AI tools does this skill work with?

Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.

What is included in this download?

One .skill package delivered instantly after purchase: the full SKILL.md role configuration plus a worked-example file with a real scenario so you see the quality before you rely on it. No subscription, yours permanently.

How is this different from using Claude without the Merewyn skill?

Without a skill file your AI starts every session as a general assistant. With Merewyn loaded it applies Sustainability & ESG Reporting Manager methodology from the first message, with consistent quality every time. Base every recommendation on the client's own numbers, state the assumption behind each one, and say plainly when a target is not reachable rather than building a plan that quietly assumes it is.

Sustainability & ESG Reporting Manager AI Skill for Claude & ChatGPT

Name: Merewyn — Sustainability & ESG Reporting Manager AI Skill
Brand: KissMySkills
Price: 14.99 USD
Availability: InStock

Merewyn — Sustainability & ESG Reporting Manager AI Skill

$14.99

Merewyn — Sustainability & ESG Reporting Manager AI Skill

$14.99 this skill vs $140+/hr, hiring an ESG reporting manager

⚡ Instant download ◆ Claude & ChatGPT ∞ Keep forever

Instant download · 30-day money-back guarantee. Pay once, keep forever — no subscription. Refund policy

Report sustainability defensibly: run double materiality, build the GHG inventory, and word claims so they survive assurance.

CSRD/ESRS, GRI, ISSB and TCFD and how they actually differ
Double materiality done properly, not as a survey exercise
GHG Protocol Scope 1, 2 and 3 with data quality stated
Assurance readiness, controls, and defensible claim wording

Companies facing a first mandatory sustainability disclosure with data scattered across spreadsheets.An ESG reporting manager bills $140+/hr, this is one file, yours forever.

// what's inside

Drop Merewyn into Claude and get an ESG reporting manager who will withdraw a claim the evidence does not support, because a greenwashing finding costs more than the disclosure did.

Merewyn produces corporate sustainability reporting that survives assurance: the frameworks and how they genuinely differ across CSRD and ESRS, GRI, ISSB with IFRS S1 and S2, TCFD and SASB; double materiality assessment done properly; greenhouse gas accounting under the GHG Protocol across Scope 1, 2 and 3 with the emission-factor and data-quality problems stated rather than hidden; Scope 3 category screening and where estimates are genuinely weak; science-based targets and what committing obliges you to do; decarbonisation levers and marginal abatement cost; the data architecture and internal controls a reporting obligation requires; limited versus reasonable assurance and what an auditor will challenge; greenwashing risk and defensible claim wording; and supply chain data collection.

What you get

→CSRD/ESRS, GRI, ISSB and TCFD and how they actually differ
→Double materiality done properly, not as a survey exercise
→GHG Protocol Scope 1, 2 and 3 with data quality stated
→Assurance readiness, controls, and defensible claim wording

📄 merewyn-sustainability-esg-reporting-manager.skill Under 2 min install Works with Claude, ChatGPT & any AI chat

How to install

Download the .skill package → open Claude → paste SKILL.md into your Project Instructions or system prompt → describe your requirement → Merewyn builds the answer. Includes a full worked example so you see exactly what you get.

merewyn-sustainability-esg-reporting-manager.skill

# Merewyn - Sustainability & ESG Reporting Manager

You are Merewyn, a sustainability and ESG reporting manager. The report has to survive an auditor, so data quality is stated, not implied.

## How you work
1. Establish which frameworks genuinely apply and by when
2. Run double materiality as evidence, not as a stakeholder survey
3. Build the GHG inventory and grade the data quality per category
4. Design controls for assurance; word every claim to be defensible

Never state an emissions figure without its data quality, and withdraw a public claim the evidence does not support.

Excerpt from the actual file you'll download.

// try it

prompt

$CSRD hits us next year and our ESG data is a mess. Get us ready.

Merewyn returns a framework applicability assessment, a double materiality process with the outcome documented defensibly, a GHG inventory across all three scopes with data quality graded per category, a Scope 3 screening naming where the estimates are weak, a data architecture and control design an auditor will accept, an assurance readiness gap list, and a review of existing public claims with any that must be withdrawn named explicitly.

// how to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot — whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.