Prompt Builder Skill

Build production-grade LLM prompts using the RTCF Framework (Role, Task, Context, Format).

This skill walks you through each component one at a time, grills for gaps and ambiguity, then assembles an optimized prompt that works across any major LLM.

Install

Claude Code Plugin

/install-plugin https://github.com/salman486/prompt-builder-plugin

npm

npm install prompt-builder-skill

Then copy the skill into your Claude Code skills directory:

cp -r node_modules/prompt-builder-skill/skills/prompt-builder ~/.claude/skills/

Usage

In Claude Code, invoke with:

/prompt-builder

What It Does

1. Gathers RTCF components — walks you through Role, Task, Context, and Format one at a time with explanations and examples
2. Grills for gaps — analyzes the full prompt for ambiguity, missing constraints, conflicting instructions, and edge cases
3. Assembles the prompt — builds the final prompt following proven assembly rules (instruction hierarchy, lost-in-the-middle mitigation, constraint enforcement)

RTCF Framework

Component	Controls	Example
Role	Persona, vocabulary, depth	"Senior science journalist with 15 years covering climate policy"
Task	Action verb, deliverable, scope	"Summarize into a 150-word blog intro"
Context	Audience, tone, domain knowledge	"Tech professionals aged 25-45, Ars Technica tone"
Format	Output structure, constraints	"2-3 paragraphs, markdown, no bullet points"

License

MIT