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