prompt
Installation
SKILL.md
task = $ARGUMENTS
Design a production-grade prompt. If $task is clear, draft immediately; ask only when a blocking fact is missing.
Four facts before drafting
Infer from $task when obvious.
- Surface — system prompt (first-person, structure-heavy), user message, tool description (~200-token ceiling, second-person imperative, markdown renders as raw text), few-shot exemplar, agent-loop instruction. Craft differs by surface.
- Target model class — reasoning (Opus 4.8/4.7, Sonnet 4.x, GPT-5.x, o-series) / instruction-tuned chat (GPT-4o, Gemini) / small or open-weights (<32B, local). Techniques that help one family hurt another.
- Task shape — classifier, generator, extractor, agent/tool-user, judge. Each has distinct failure modes.
- Output contract — format, boundaries, error-state, length.