tandem-codex-plugin

v0.1.5

Tandem Workflow Architect for Codex. Plan-mode design partner that helps you shape Tandem workflows (V2 automations and workflow plans) and hands them to the Tandem engine for validation, preview, and run. Plan with Codex. Govern with Tandem. Run with receipts.

Codex1 Skill

By frumu-aiLicense: MIT1.1k GitHub starsUpdated 13 hours ago

Directory evidence

Runtimes: Codex
Parsed components: 1 skill or MCP entry
Source updated: Sep 23, 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 tandem-codex-plugin for Codex

Installs for the current user

codex plugin marketplace add hashgraph-online/awesome-codex-plugins
codex plugin marketplace upgrade awesome-codex-plugins
codex plugin add tandem-codex-plugin@awesome-codex-plugins

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

Compatibility: the page URL and API slug “tandem-codex-plugin” remain stable.

Codex: tandem-codex-plugin@agent-plugin-marketplace → tandem-codex-plugin@awesome-codex-plugins

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/hashgraph-online/awesome-codex-plugins

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/frumu-ai/tandem-codex-plugin/.

Plugin files

plugins/frumu-ai/tandem-codex-plugin/

├── .codex-plugin/plugin.json
└── skills/tandem-workflow-plan-mode/SKILL.md

Included Skills1

tandem-workflow-plan-modeskills/tandem-workflow-plan-mode/SKILL.md

Use when the user wants to design, revise, or validate a Tandem workflow (V2 automation, workflow plan, or mission). Acts as a Tandem Workflow Architect: shapes the workflow graph, asks only blocking questions, validates via the Tandem HTTP API, and never applies or runs without explicit user approval. Do not use for general agent-prompt scaffolding unrelated to Tandem, for non-Tandem orchestrators, or for tasks the user intends to execute directly inside Codex without involving the Tandem engine.

Plugin manifests1

plugins/frumu-ai/tandem-codex-plugin/.codex-plugin/plugin.json

{
  "name": "tandem-codex-plugin",
  "version": "0.1.5",
  "description": "Tandem Workflow Architect for Codex. Plan-mode design partner that helps you shape Tandem workflows (V2 automations and workflow plans) and hands them to the Tandem engine for validation, preview, and run. Plan with Codex. Govern with Tandem. Run with receipts.",
  "keywords": [
    "tandem",
    "workflow",
    "automation",
    "mcp",
    "architect",
    "plan-mode"
  ],
  "homepage": "https://github.com/frumu-ai/tandem-codex-plugin",
  "repository": "https://github.com/frumu-ai/tandem-codex-plugin",
  "license": "MIT",
  "author": {
    "name": "frumu-ai",
    "url": "https://github.com/frumu-ai"
  },
  "skills": "./skills/",
  "mcpServers": "./.mcp.json",
  "commands": "./commands/",
  "interface": {
    "displayName": "Tandem Workflow Architect",
    "shortDescription": "Plan Tandem workflows in Codex; govern and run them in Tandem.",
    "longDescription": "A Codex plugin for designing Tandem workflows with plan-mode guidance, bundled Tandem docs, validation, previews, and governed execution through the Tandem engine.",
    "developerName": "frumu-ai",
    "category": "Productivity",
    "capabilities": [
      "Interactive",
      "Read",
      "Write"
    ],
    "websiteURL": "https://github.com/frumu-ai/tandem-codex-plugin",
    "brandColor": "#2563EB",
    "defaultPrompt": [
      "Create a Tandem workflow from an intent",
      "Build a complex Tandem workflow DAG",
      "Preview or validate a Tandem workflow"
    ],
    "composerIcon": "./assets/icon.png",
    "logo": "./assets/icon.png"
  }
}

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.

[tandem-codex-plugin on Agent Plugins Marketplace](https://pluginsmp.com/plugins/tandem-codex-plugin)