What is RFC 2119 in the context of this skill?

RFC 2119 is a technical standard that defines specific keywords like MUST, SHOULD, and MAY to indicate requirement levels in documentation to ensure clear, unambiguous interpretation.

Why should I use RFC 2119 in my SOPs for Claude?

It eliminates linguistic ambiguity, allowing Claude and other AI agents to understand exactly which steps are mandatory versus optional, leading to more predictable and reliable behavior.

Can I use this for security and safety-critical protocols?

Yes, it is ideal for security as it allows you to use MUST NOT for absolute prohibitions and MUST for critical safety checks that cannot be skipped.

How does this skill help with error handling?

By defining MUST requirements, Claude recognizes that failure to complete a specific step constitutes a process failure, allowing for immediate error detection and rollback triggers.

RFC 2119 SOP Standards

Name: RFC 2119 SOP Standards
Author: TheBushidoCollective

byTheBushidoCollective

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Learning & Documentation

Standardizes Standard Operating Procedures using RFC 2119 requirement levels for deterministic AI agent execution.

The sop-rfc2119 skill implements the internet standard RFC 2119 within software documentation and SOPs to eliminate ambiguity for both AI agents and human developers. By enforcing strict definitions for keywords like MUST, SHOULD, and MAY, this skill ensures that instructions are interpreted consistently across all environments. It is particularly useful for high-stakes workflows such as deployments, security audits, and automated testing, where the distinction between mandatory requirements and optional enhancements is critical for system integrity.

Key Features

01Improved AI agent reliability through unambiguous constraint definitions

02Deterministic instruction mapping with MUST, SHOULD, and MAY keywords

03Best practice patterns for negative constraints using MUST NOT and SHOULD NOT

04Standardized requirement levels for safety-critical and security steps

05Clear distinction between mandatory actions and optional enhancements

0695 GitHub stars

Use Cases

01Defining code review guidelines that separate stylistic preferences from functional requirements

02Creating high-stakes deployment SOPs where specific safety steps are non-negotiable

03Standardizing security audit checklists to ensure absolute compliance with protocols

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add thebushidocollective/han sop-rfc2119

For use in Claude.ai and ChatGPT

Download Skill