write-prompt-guidelisted

# Write a Prompt Guide A skill pack's `SKILL.md` tells an **agent** what to do. Its `README.md` tells a reader what the pack **is**. Neither tells a **user** what to type, what context to hand over before the run starts, or which of the pack's known limitations they have to compensate for by hand. That gap is what this skill fills, for one named target pack at a time. This is not a prompt-engineering tutorial. A generic "be specific, give examples" page helps nobody who already installed the pack. The deliverable is specific to one pack: its real inputs, its real invocation triggers, its real output shape, and its real open bugs. ## Evidence basis The structure below is not invented. It is the intersection of the official prompting documentation of four model/agent providers — Anthropic, OpenAI, Google, and BytePlus — recorded with URLs and per-claim attribution in this repo's [`SOURCES.md`](../../../SOURCES.md) (`ANTHROPIC-PROMPTING-01`, `OPENAI-PROMPTING-01`, `GOOGLE-PROMPTING-01`, `BYTEPLUS-PROMPTING-01`). Two techniques appear in all four independently and a third in two of them independently, which is why these three are the non-negotiable spine of every guide this skill produces: 1. **Structural separation of instructions, context, examples, and input** — Anthropic via XML tags (`<instructions>`, `<context>`, `<input>`), OpenAI and BytePlus via the same four Markdown sections (`# Identity`, `# Instructions`, `# Examples`, `# Context`), Google via "XML tags or Mark