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development-system

v5.4.0

John's consolidated development workflow, engineering standards, worktree, task, review, and agentic-system tooling.

CodexClaude Code8 Skills

By John WilgerLicense: AGPL-3.0-or-later4 GitHub starsUpdated 2 hours ago

Directory evidence

Runtimes
Codex and Claude Code
Parsed components
8 skill or MCP entries
Source updated
Aug 29, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install plugin

Installs for the current user
codex plugin marketplace add IchenDEV/agent-plugin-mkt
codex plugin marketplace upgrade agent-plugin-marketplace
codex plugin add development-system@agent-plugin-marketplace

Paste and run these commands in a terminal with Codex. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/jwilger/ai-plugins

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/development-system/.

Plugin files

plugins/development-system/
├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
├── skills/agentic-systems/SKILL.md
├── skills/delivery/SKILL.md
├── skills/development-workflow/SKILL.md
├── skills/engineering-standards/SKILL.md
├── skills/eval-case-reporting/SKILL.md
├── skills/setup/SKILL.md
├── skills/tasks/SKILL.md
└── skills/worktrees/SKILL.md

Included Skills8

agentic-systemsskills/agentic-systems/SKILL.md

Use when designing, scaffolding, evaluating, or delivering LLM and agent systems, including eval harnesses, RAG, structured output, model tool use, orchestration, AI observability, provider comparison or routing, AI security, cost, and stochastic evaluation, when agentic_systems is enabled.

deliveryskills/delivery/SKILL.md

Use when committing, pushing, opening or babysitting a PR/MR, merging, or deciding whether verified work is complete under the configured delivery mode.

development-workflowskills/development-workflow/SKILL.md

Use when making repository changes, debugging, handling review feedback, verifying work, conducting final review, recovering CI, deciding the next development lifecycle step, or handling a missing or weaker final_review_protocol attestation or coordinator clean-iteration minimum.

engineering-standardsskills/engineering-standards/SKILL.md

Use when starting or substantially changing a serious project that should follow the configured architecture, typing, testing, linting, documentation, and CI quality regime.

eval-case-reportingskills/eval-case-reporting/SKILL.md

Use when assistant, skill, prompt, hook, tool, or agent behavior is surprising, unsafe, brittle, partial, or worth preserving as an eval case and eval_case_reporting is enabled.

setupskills/setup/SKILL.md

Use when initializing or reconfiguring a repository with the development-system plugin, including semantic path scopes and named direct-argv commands.

tasksskills/tasks/SKILL.md

Use for shared repository task tracking, backlog admission or prioritization, task history/search, dashboard or scaffold setup, and whenever Tiber or origin/tiber is mentioned, including EventCore publication conflicts, ambiguous pushes, tiber sync recovery, force-push safety, and cross-worktree coordination.

worktreesskills/worktrees/SKILL.md

Use when separate mutable tasks need concurrent isolation, the user explicitly requests a linked worktree, or worktree setup, cleanup, or diagnosis is needed.

Plugin manifests2

plugins/development-system/.codex-plugin/plugin.json
{
  "name": "development-system",
  "version": "5.4.0",
  "description": "John's consolidated development workflow, engineering standards, worktree, task, review, and agentic-system tooling.",
  "author": {
    "name": "John Wilger",
    "email": "[email protected]"
  },
  "license": "AGPL-3.0-or-later",
  "keywords": [
    "development",
    "workflow",
    "worktrees",
    "tiber",
    "quality"
  ],
  "hooks": "./hooks/codex.json",
  "interface": {
    "displayName": "Development System",
    "shortDescription": "One configured development workflow for Codex and Claude Code.",
    "longDescription": "Use Development System for John's consolidated development discipline, engineering standards, worktree isolation, Tiber coordination, final review, and optional agentic-system workflows.",
    "developerName": "John Wilger",
    "category": "Developer Tools",
    "capabilities": [
      "Read"
    ],
    "websiteURL": "https://git.johnwilger.com/Slipstream/ai-plugins",
    "privacyPolicyURL": "https://git.johnwilger.com/Slipstream/ai-plugins/src/branch/main/README.md",
    "termsOfServiceURL": "https://git.johnwilger.com/Slipstream/ai-plugins/src/branch/main/README.md",
    "defaultPrompt": [
      "Set up this project with my standard development system.",
      "Use my configured development workflow for this change.",
      "Check this project for conflicting plugins and settings."
    ]
  }
}
plugins/development-system/.claude-plugin/plugin.json
{
  "name": "development-system",
  "description": "John's consolidated development workflow, engineering standards, worktree, task, review, and agentic-system tooling.",
  "version": "5.4.0",
  "author": {
    "name": "John Wilger",
    "email": "[email protected]"
  },
  "license": "AGPL-3.0-or-later",
  "keywords": [
    "development",
    "workflow",
    "worktrees",
    "tiber",
    "quality"
  ]
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[development-system on Agent Plugins Marketplace](https://pluginsmp.com/plugins/development-system)