WIGTN Plugin v2: Codex

WIGTN Plugin v2 for Codex reached v0.5.1 on 25 August 2026. v0.5.0 moved session knowledge capture into a separate optional plugin and left nine skills in Core. v0.5.1 added checks for the diagrams, decks and wireframes those skills produce.

What changed since v0.4.0

v0.5.0 moved Knowledge Wiki out of Core. Product Spec now starts with the Compact format. Screen Spec writes only the requested files and the files they depend on. Work Planner steps in only when a plan must be saved or resumed. Verified Delivery still requires an explicit call and asks for only the evidence the change needs.

v0.5.1 added checks for Mermaid source, SVG and PNG output before visual review. WIGTN Presentation now leaves file generation to Codex and applies the WIGTN brand. HTML decks are built only when requested. Screen wireframes no longer use a CDN, and the validator checks their viewport setting, internal links and remote resources.

Get it

Two lines, verbatim from the v0.5.1 README:

• codex plugin marketplace add wigtn/wigtn-plugins-codex
• codex plugin add wigtn-plugins-with-codex@wigtn

The Core package contains no lifecycle hook. Session knowledge capture is available as a separate optional install:

codex plugin add wigtn-knowledge-wiki@wigtn

Installing that plugin still captures nothing until a local configuration enables it and defines the allowed repositories and personal wiki path.

What shipped

Core and Knowledge Wiki now ship as two plugins in the same marketplace. Core contains the skills and validators for product and release work. Knowledge Wiki remains optional.

• Core ships nine skills for PRDs, screen files, saved plans, acceptance checks, design direction, verified delivery, Git releases, diagrams and WIGTN decks.
• Knowledge Wiki stays outside Core. Its repository, secret, semantic-audit and output checks still apply when it is installed.
• Product Spec starts with Compact, Screen Spec writes only the requested files, and Verified Delivery runs only when called by name.
• v0.5.1 checks diagram files, decks, wireframes and bundled resources before they are handed off.
• WorkGraph, evidence and Git-authority contracts remain in Core.
• Apache 2.0.
• This release does not claim that the plugin improves coding quality or efficiency. The published evaluation does not show a general improvement.

Read the report

The Codex tech report explains why these workflows stay selective. The repository contains the v0.5.1 code, its validators and the full release history. Both links are at the top of this page.