Does this skill completely remove IPv4 support?

No, it treats IPv4 as a second-class citizen for legacy support, ensuring backward compatibility while making IPv6 the primary and default communication path.

How does it handle IPv6 addresses in URLs?

It implements logic to ensure IPv6 addresses are correctly wrapped in brackets (e.g., [::1]:80) to prevent parsing errors when port numbers are present.

Why prioritize IPv6 over IPv4 in development?

IPv6 is the modern standard for networking, offering a significantly larger address space and better performance in modern infrastructures, whereas IPv4 is increasingly considered legacy.

Can I use this with cloud providers that have limited IPv6 support?

Yes, the skill includes guidelines for documenting and implementing IPv4-only paths when specific infrastructure limitations, like certain load balancers, require it.

IPv6-First Development

Name: IPv6-First Development
Author: troykelly

bytroykelly

0•

API Development

Enforces IPv6-centric networking standards across code, configuration, and documentation while treating IPv4 as a legacy fallback.

The IPv6-First Development skill ensures that your software projects are built for the modern internet by prioritizing IPv6 as the primary networking protocol. It provides Claude with specific implementation patterns for socket binding, DNS resolution, and URL construction that utilize IPv6 by default, including the necessary bracket notation and dual-stack configurations. By treating IPv4 as a secondary, legacy concern, this skill helps developers future-proof their infrastructure and maintain consistent, modern networking standards across all codebases, documentation, and automated tests.

Key Features

01Standardizes IPv6-first socket and connection implementations

02Implements URL construction patterns with mandatory IPv6 bracket notation

03Formats documentation and config examples using IPv6 address defaults

04Validates network code to ensure testing suites prioritize IPv6 connectivity

050 GitHub stars

06Automates dual-stack configuration with IPv6 priority and IPv4 fallback

Use Cases

01Modernizing legacy networking code for IPv6-only or dual-stack environments

02Building future-proof cloud-native applications and microservices

03Standardizing documentation and API specifications with IPv6 examples

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add troykelly/claude-skills ipv6-first

For use in Claude.ai and ChatGPT

Download Skill