This writes client proposals for service businesses: the full document from project understanding through pricing and terms. It's opinionated about structure (understanding before solution, concrete deliverables, no weasel words on pricing) and pushes you to restate the client's problem in their own language, not consultant speak. The scope section alone is worth it: forces numbered deliverables plus explicit exclusions so you're not arguing about what was included six weeks later. Works for web dev, trades, consulting, anything B2B services. Covers quotes, SOWs, engagement letters, the whole range.
npx skills add https://github.com/jezweb/claude-skills --skill proposal-writer