claim-check

Validates marketing claims against evidence from reviews, case studies, and transcripts.

Updated Aug 28, 2026
One-click install
npx skills add https://github.com/nugiwabot/marketing-branding-selling-ads-skills --skill claim-check-nugiwabot
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: claim-check
Source: https://github.com/nugiwabot/marketing-branding-selling-ads-skills/tree/main/.agents/skills/claim-check
Command: npx skills add https://github.com/nugiwabot/marketing-branding-selling-ads-skills --skill claim-check-nugiwabot

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Marketing and sales messaging often contains claims that no evidence actually supports, creating risk with skeptical buyers, sales teams who cannot prove them, and legal reviewers who cannot sign off. This Skill audits every claim in your messaging against your proof base and flags the ones running on faith. ## Core Features & Use Cases - Claim Extraction: Pulls every disputable assertion from homepages, product pages, sales decks, battlecards, ads, and email copy. - Evidence Cross-Referencing: Searches reviews, case studies, call transcripts, product data, and analyst mentions for support, assigning each claim a verdict of supported, thin, or unsupported. - Fix Recommendations: Suggests evidence-backed rewordings or removals for weak claims, and flags regulated or comparative claims that may need legal review. - Use Case: Before a website refresh, run the audit to discover that your "3x faster onboarding" headline has no supporting case study, then reword it to match the customer quote you actually have. ## Quick Start Review the claims on our homepage and sales deck against our case studies and G2 reviews, and tell me which claims are unsupported.

Frequently Asked Questions about claim-check

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I check if my marketing claims are supported by evidence?

Extract every disputable claim from your messaging, then search your proof base of reviews, case studies, transcripts, and data for support. Assign each claim a verdict of supported, thin, or unsupported, and record the specific proof or its absence.

What counts as a claim in marketing copy?

A claim is any assertion a buyer could dispute: a number, a superiority statement, an outcome promise, or a category claim. These appear on homepages, product pages, pricing pages, sales decks, battlecards, ads, and email copy.

What evidence sources can substantiate product claims?

Valid proof includes customer reviews and testimonials from G2 or Capterra, case studies, sales call transcripts where customers describe results, product data and benchmarks, and analyst mentions. A claim is only supported when a specific named source is cited.

When should I run a claims audit on my messaging?

Run it before a launch or website refresh, when tightening messaging, or when you need to know which claims would survive a skeptical buyer or legal review. It is also useful when sales teams report they cannot prove specific claims.

What happens to claims that have no supporting evidence?

Unsupported and thin claims are flagged with options: gather the missing evidence, reword the claim to something the existing evidence can carry, or remove it. Regulated or comparative claims are separately flagged for legal or compliance review.