Is this skill suitable for production environments?

Yes, it is specifically designed to create production-grade scaffolding, including evaluation rubrics and audit-ready notes.

How does it protect against prompt injection?

It generates a dedicated test suite and enforces a strict hierarchy of instructions to ensure the model prioritizes developer intent over potentially malicious user input.

What does the Greybeard skill actually do?

It acts as a senior security reviewer to help you write system prompts that are resistant to prompt injection and consistent in their output.

What is the source of the Greybeard pattern?

This skill is an adaptation of the 'greybeard_secure_prompt_engineer' pattern from Daniel Miessler's Fabric project, optimized for use within Claude Code.

Greybeard Secure Prompt Engineer

Name: Greybeard Secure Prompt Engineer
Author: bdmorin

bybdmorin

•

安全与测试

Generates production-grade, injection-resistant system prompts using NASA-level mission assurance principles.

Greybeard transforms vague or unsafe prompting into robust, production-ready system instructions by applying rigorous security engineering and mission-critical discipline. Acting as a principal-level systems engineer, this skill enforces strict instruction hierarchies, preserves data privacy, and generates built-in prompt-injection test suites and evaluation rubrics. It is ideal for developers building customer-facing AI agents who need to ensure their models remain secure, predictable, and resistant to adversarial manipulation.

主要功能

01Mitigates data leakage and adversarial instruction risks

02Generates secure, auditable system and developer prompts

03Provides comprehensive prompt-injection test suites

04Enforces strict instruction hierarchy (System > Developer > User)

05Includes evaluation rubrics for mission assurance

061 GitHub stars

使用场景

01Hardening production AI agents against prompt injection attacks

02Standardizing internal prompt engineering workflows for security compliance

03Auditing existing system prompts for privacy risks and instructional clarity

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add bdmorin/the-no-shop greybeard-secure-prompt-engineer

For use in Claude.ai and ChatGPT

主要功能

01Mitigates data leakage and adversarial instruction risks

02Generates secure, auditable system and developer prompts

03Provides comprehensive prompt-injection test suites

04Enforces strict instruction hierarchy (System > Developer > User)

05Includes evaluation rubrics for mission assurance

061 GitHub stars

使用场景

01Hardening production AI agents against prompt injection attacks

02Standardizing internal prompt engineering workflows for security compliance

03Auditing existing system prompts for privacy risks and instructional clarity

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add bdmorin/the-no-shop greybeard-secure-prompt-engineer

For use in Claude.ai and ChatGPT