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sg-harness

v1.0.0

A provider-neutral workflow for design, decomposition, sequential child-agent execution, and knowledge sync.

CodexClaude Code4 Skills

By han0001License: MIT0 GitHub starsUpdated 6 days ago

Directory evidence

Runtimes
Codex and Claude Code
Parsed components
4 skill or MCP entries
Source updated
Sep 18, 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 sg-harness for Codex and Claude Code

Installs for the current user
codex plugin marketplace add IchenDEV/agent-plugin-mkt
codex plugin marketplace upgrade agent-plugin-marketplace
codex plugin add sg-harness@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/han0001/sg-harness

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

Plugin files

sg-harness/
├── .codex-plugin/plugin.json
├── .claude-plugin/plugin.json
├── skills/sg-decompose-task/SKILL.md
├── skills/sg-execute-task/SKILL.md
├── skills/sg-plan/SKILL.md
└── skills/sg-source-of-truth/SKILL.md

Included Skills4

sg-decompose-taskskills/sg-decompose-task/SKILL.md

Use when an approved plan.md must be split into self-contained, executable steps for the sg-* workflow.

sg-execute-taskskills/sg-execute-task/SKILL.md

Use when an sg-* task has been decomposed into step files and is ready for sequential execution.

sg-planskills/sg-plan/SKILL.md

Use when designing a feature, clarifying intent before implementation, or turning an initial request into an approved plan.md.

sg-source-of-truthskills/sg-source-of-truth/SKILL.md

Use when wrapping up an sg-* task, reconciling its decisions with permanent documentation, or correcting docs that drifted from the code.

Plugin manifests2

.codex-plugin/plugin.json
{
  "name": "sg-harness",
  "version": "1.0.0",
  "description": "A provider-neutral workflow for design, decomposition, sequential child-agent execution, and knowledge sync.",
  "author": {
    "name": "han0001",
    "url": "https://github.com/han0001"
  },
  "homepage": "https://github.com/han0001/sg-harness",
  "repository": "https://github.com/han0001/sg-harness",
  "license": "MIT",
  "keywords": [
    "workflow",
    "harness",
    "spec-driven",
    "orchestration",
    "claude",
    "codex"
  ],
  "skills": "./skills/",
  "interface": {
    "displayName": "SG Harness",
    "shortDescription": "Plan and execute guarded agent tasks",
    "longDescription": "Design a task, decompose it into isolated steps, execute each step with Claude or Codex, and sync verified decisions into permanent documentation.",
    "developerName": "han0001",
    "category": "Developer Tools",
    "capabilities": [
      "Interactive",
      "Write"
    ],
    "websiteURL": "https://github.com/han0001/sg-harness",
    "defaultPrompt": [
      "Design this task with SG Harness.",
      "Decompose the approved SG plan into executable steps.",
      "Execute this SG task with the selected runtime."
    ]
  }
}
.claude-plugin/plugin.json
{
  "name": "sg-harness",
  "version": "1.0.0",
  "description": "A provider-neutral workflow for design, decomposition, sequential child-agent execution, and knowledge sync.",
  "author": {
    "name": "han0001"
  },
  "homepage": "https://github.com/han0001/sg-harness",
  "repository": "https://github.com/han0001/sg-harness",
  "license": "MIT",
  "keywords": [
    "workflow",
    "harness",
    "spec-driven",
    "orchestration",
    "tdd"
  ]
}

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.

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