legion

v8.0.6

Official Codex plugin bundle for Legion's multi-agent planning, execution, review, and shipping workflows.

Codex31 Skills

By 9thLevelSoftwareLicense: MIT79 GitHub starsUpdated last month

Directory evidence

Runtimes: Codex
Parsed components: 31 skill or MCP entries
Source updated: Sep 16, 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 legion for Codex

Installs for the current user

codex plugin marketplace add IchenDEV/agent-plugin-mkt
codex plugin marketplace upgrade agent-plugin-marketplace
codex plugin add legion@agent-plugin-marketplace

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

Compatibility: the page URL and API slug “legion-2” remain stable.

Codex: legion-2@agent-plugin-marketplace → legion@agent-plugin-marketplace

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/9thLevelSoftware/legion

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

legion/

├── .codex-plugin/plugin.json
├── skills/agent-creator/SKILL.md
├── skills/agent-registry/SKILL.md
├── skills/authority-enforcer/SKILL.md
├── skills/board-of-directors/SKILL.md
├── skills/cli-dispatch/SKILL.md
├── skills/codebase-mapper/SKILL.md
├── skills/design-workflows/SKILL.md
├── skills/execution-tracker/SKILL.md
├── skills/github-sync/SKILL.md
├── skills/hooks-integration/SKILL.md
├── skills/intent-router/SKILL.md
├── skills/legion/SKILL.md
├── skills/marketing-workflows/SKILL.md
├── skills/memory-manager/SKILL.md
├── skills/milestone-tracker/SKILL.md
├── skills/phase-decomposer/SKILL.md
├── skills/plan-critique/SKILL.md
├── skills/polymath-engine/SKILL.md
├── skills/portfolio-manager/SKILL.md
├── skills/questioning-flow/SKILL.md
├── skills/review-evaluators/SKILL.md
├── skills/review-loop/SKILL.md
├── skills/review-panel/SKILL.md
├── skills/security-review/SKILL.md
├── skills/ship-pipeline/SKILL.md
├── skills/spec-pipeline/SKILL.md
├── skills/wave-executor/SKILL.md
├── skills/workflow-common/SKILL.md
├── skills/workflow-common-domains/SKILL.md
├── skills/workflow-common-github/SKILL.md
└── skills/workflow-common-memory/SKILL.md

Included Skills31

agent-creatorskills/agent-creator/SKILL.md

Guided agent personality creation with schema validation and registry integration

agent-registryskills/agent-registry/SKILL.md

Maps all 48 Legion agents by division, capability, and task type for intelligent team assembly

authority-enforcerskills/authority-enforcer/SKILL.md

Validates and enforces agent authority boundaries during wave execution and review panels

board-of-directorsskills/board-of-directors/SKILL.md

Governance escalation tier with dynamic agent panels, deliberation, voting, and audit persistence

cli-dispatchskills/cli-dispatch/SKILL.md

Cross-CLI dispatch infrastructure for routing work to external CLIs

codebase-mapperskills/codebase-mapper/SKILL.md

Engine for /legion:map. Analyzes an existing codebase, generates CODEBASE.md for backward-compatible architecture context, and writes .planning/codebase/ index artifacts consumed by /legion:start, /plan, /build, /review, /status, and /quick.

design-workflowsskills/design-workflows/SKILL.md

Design system creation, UX research workflows, and three-lens design review cycles for design-focused phases

execution-trackerskills/execution-tracker/SKILL.md

Tracks execution progress with STATE.md updates, ROADMAP.md progress, and atomic git commits per plan

github-syncskills/github-sync/SKILL.md

GitHub integration — issue tracking, PR creation, milestone sync, and status readback via gh CLI

hooks-integrationskills/hooks-integration/SKILL.md

Claude Code hooks for automated Legion lifecycle events

intent-routerskills/intent-router/SKILL.md

Interprets --just-* and --skip-* command flags for /legion:build and /legion:review, validates flag combinations against rules, and resolves the matching team template from intent-teams.yaml. Use when the user passes intent flags to build or review commands, asks about flag combinations, or needs to filter agent teams by intent.

legionskills/legion/SKILL.md

Bridge Codex requests to the Legion workflows in this repository when the user references Legion or legacy /legion:* commands.

marketing-workflowsskills/marketing-workflows/SKILL.md

Marketing campaign planning — campaign documents, content calendars, cross-channel coordination, and marketing-specific phase decomposition

memory-managerskills/memory-manager/SKILL.md

Stores and retrieves task outcomes and agent performance across sessions via .planning/memory/OUTCOMES.md, scores recalled entries by recency and importance, and degrades gracefully when memory files are absent. Use when the user references past sessions, asks to recall previous results, records lessons learned, or is working within a Legion multi-agent workflow.

milestone-trackerskills/milestone-tracker/SKILL.md

Milestone management — definition, completion with metrics, archiving, summary generation

phase-decomposerskills/phase-decomposer/SKILL.md

Breaks down a roadmap phase into phased implementation plans grouped by dependency order, assigns specialist agents to each plan, and generates PLAN.md files. Core engine for /legion:plan. Use when the user wants to plan a project phase, create implementation plans, organize work into waves, or assign agents to tasks.

plan-critiqueskills/plan-critique/SKILL.md

Pre-mortem analysis and assumption hunting for stress-testing plans before execution

polymath-engineskills/polymath-engine/SKILL.md

Research-first design discovery engine for /legion:explore

portfolio-managerskills/portfolio-manager/SKILL.md

Multi-project portfolio management — registry, state aggregation, dependencies, agent allocation

questioning-flowskills/questioning-flow/SKILL.md

Adaptive project initialization questioning that captures vision, requirements, and preferences

review-evaluatorsskills/review-evaluators/SKILL.md

Multi-pass specialized evaluators for deep code quality, UI/UX, integration, and business logic review

review-loopskills/review-loop/SKILL.md

Dev-QA loop engine with structured feedback, fix routing, and user escalation for /legion:review

review-panelskills/review-panel/SKILL.md

Assembles a review panel of specialist agents matched to the code or artifact being reviewed, each evaluating against domain-specific rubrics, then synthesizes findings into a consolidated report. Called by review-loop for /legion:review. Use when the user needs multi-reviewer feedback, peer review simulation, rubric-based code evaluation, or expert critique from multiple perspectives.

security-reviewskills/security-review/SKILL.md

OWASP Top 10 and STRIDE threat modeling security review for code and architecture

ship-pipelineskills/ship-pipeline/SKILL.md

Pre-ship quality gates, deployment verification, and canary monitoring for the /legion:ship command

spec-pipelineskills/spec-pipeline/SKILL.md

Pre-coding specification pipeline that produces structured spec documents through 5 stages

wave-executorskills/wave-executor/SKILL.md

Executes wave-structured plans with personality-injected agents — parallel or sequential per CLI adapter

workflow-commonskills/workflow-common/SKILL.md

DEPRECATED compatibility shim; workflow-common-core is canonical for all conventions referenced here

workflow-common-domainsskills/workflow-common-domains/SKILL.md

Optional cross-domain conventions for design/marketing/specialized workflows

workflow-common-githubskills/workflow-common-github/SKILL.md

Optional GitHub interaction conventions shared across commands

workflow-common-memoryskills/workflow-common-memory/SKILL.md

Optional memory conventions shared across commands

Plugin manifests1

.codex-plugin/plugin.json

{
  "name": "legion",
  "version": "8.0.6",
  "description": "Official Codex plugin bundle for Legion's multi-agent planning, execution, review, and shipping workflows.",
  "author": {
    "name": "9thLevelSoftware",
    "url": "https://github.com/9thLevelSoftware"
  },
  "homepage": "https://9thlevelsoftware.github.io/legion/",
  "repository": "https://github.com/9thLevelSoftware/legion",
  "license": "MIT",
  "keywords": [
    "legion",
    "codex",
    "plugin",
    "multi-agent",
    "workflow-orchestration",
    "project-management"
  ],
  "skills": "./skills/",
  "interface": {
    "displayName": "Legion",
    "shortDescription": "Multi-agent project orchestration for Codex.",
    "longDescription": "Legion packages guided planning, phase execution, QA review, shipping, and portfolio workflows for Codex. It exposes the Legion skill set directly from this repository without changing the existing npm installer flow.",
    "developerName": "9thLevelSoftware",
    "category": "Productivity",
    "capabilities": [
      "Interactive",
      "Write"
    ],
    "websiteURL": "https://9thlevelsoftware.github.io/legion/",
    "defaultPrompt": [
      "Use Legion to start a new project and capture the roadmap.",
      "Use Legion to plan the next phase and recommend the right agents.",
      "Use Legion to review the current phase and route any fixes."
    ],
    "brandColor": "#0F766E"
  }
}

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.

[legion on Agent Plugins Marketplace](https://pluginsmp.com/plugins/legion-2)