What is 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.
What is brief used for?
Marketers and founders use it to draft copy, plan campaigns, and audit landing pages with Claude under quality guardrails.
How much does brief cost?
Pros and cons
Pros
• Router dispatches to 9 deep-dive reference modules to keep responses focused • Two quality gates make the model ask instead of guessing when context is missing • Quality bar enforces specificity, reader-first framing, and proof over claims • Ships with a 26-prompt evaluation suite and benchmark outputs • Open source and works with any tool that loads a SKILL.md file
Cons
• Requires a tool that can load SKILL.md files (such as Claude) • Setup is more technical than a hosted app • Scope is limited to marketing copy, campaigns, and page audits
Questions about brief
What is brief?
brief is a SKILL.md-based prompt system for marketing work — drafting copy, planning campaigns, and critiquing landing pages — with built-in guardrails.
How does brief stay focused?
It uses a lightweight router that dispatches to nine deep-dive reference modules, so it does not front-load every instruction at once.
Is brief free?
Yes. brief is an open-source GitHub project that works with any tool capable of loading a SKILL.md file.
Does brief have benchmark results?
It ships with a 26-prompt evaluation suite and raw benchmark outputs showing a 20-percentage-point improvement over baseline.
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