brief

brief is an AI marketing skill for Claude that drafts copy, plans campaigns, and audits landing pages from a single SKILL.md-based prompt system. It uses a lightweight router that dispatches requests to nine deep-dive reference modules, so responses stay focused without front-loading every instruction at once. Two quality gates stop the model from guessing when key context is missing — it asks for the missing detail instead. A universal quality bar enforces specificity, reader-first framing, single-message discipline, proof over claims, and honesty throughout the output. The package ships with a 26-prompt evaluation suite and raw benchmark outputs showing a 20-percentage-point improvement over baseline. Because it is built on the SKILL.md format, it works with any tool that can load a SKILL.md file. brief is open source and suits marketers and founders who want guardrailed, higher-quality marketing output from Claude.

Marketers and founders use it to draft copy, plan campaigns, and audit landing pages with Claude under quality guardrails.