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Subagents for OpenAI Codex

Specialist subagents, agent workflow frameworks and paid agent services that plug into your coding app. Everything below works with OpenAI Codex; free GitHub projects and paid options are listed together.

Updated October 2026 Β· 43 listings Β· stars refreshed daily from GitHub

How to add subagents & agents to OpenAI Codex

Subagents are usually Markdown files with a name, description, tool list and system prompt. Copy the ones you need into your app's agents folder rather than installing a whole pack at once.

1

wshobson/agents πŸ€– AgentFree

Large plugin marketplace of specialist subagents, skills and commands for Claude Code

β˜… 40k Β· +192 this week

2

Spec Kit πŸ€– AgentFree

GitHub's toolkit for spec-driven development with AI coding agents

β˜… 140k Β· +898 this week

4

Open Code Review πŸ€– AgentOpen source

Alibaba's AI code review CLI: deterministic pipeline plus LLM agent, line-level comments

β˜… 43k Β· +2.1k this week

5

Task Master πŸ€– AgentFree

AI task management that turns a PRD into tasks your coding agent works through

β˜… 28k Β· +39 this week

6

Fast Agent πŸ€– AgentOpen source

Python framework for building, orchestrating and evaluating MCP-native AI agents

β˜… 3.9k Β· +9 this week

8

OpenSpec πŸ€– AgentFree

Lightweight spec-driven development: agree on changes before the agent codes

β˜… 71k Β· +564 this week

9

CC Safety Net πŸ€– AgentOpen source

Pre-execution guard that blocks destructive commands and secret access for coding agents

β˜… 1.6k Β· +11 this week

10

BMAD Method πŸ€– AgentFree

Agile AI-driven development with analyst, PM, architect, developer and UX agents

β˜… 54k Β· +269 this week

11

Brooks Lint πŸ€– AgentOpen source

AI code review graded against twelve classic engineering books, with citations and health scores

β˜… 1.5k Β· +6 this week

12

Claude Squad πŸ€– AgentFree

Manage multiple terminal agents in parallel in separate workspaces

β˜… 8.6k Β· +28 this week

13

cc-sdd πŸ€– AgentOpen source

Spec-driven development harness with Agent Skills and long-running autonomous implementation

β˜… 3.7k Β· +14 this week

15

Ruflo (Claude Flow) πŸ€– AgentFree

Agent orchestration platform for running swarms of Claude Code agents

β˜… 74k Β· +449 this week

16

MemSearch πŸ€– AgentOpen source

Persistent cross-platform memory for coding agents, backed by Markdown and Milvus

β˜… 2.7k Β· +42 this week

18

Oh My OpenAgent (OmO) πŸ€– AgentFree

Multi-model agent orchestration for OpenCode and Codex: type ultrawork, agents run to done

β˜… 70k Β· +344 this week

20

great_cto πŸ€– AgentFree

A 70-agent pipeline that runs Claude Code through staged, human-gated product development

β˜… 102

21

Claude Octopus πŸ€– AgentOpen source

Run multiple AI models against one task and surface disagreements before you ship

β˜… 4.1k Β· +40 this week

22

Maestro πŸ€– AgentOpen source

Multi-agent orchestration with 39 specialists, phased workflows and persistent sessions

β˜… 463 Β· +1 this week

23

Claude Codex Bridge (CCB) πŸ€– AgentFreemium

Multi-agent terminal UI that coordinates Claude, Codex, Gemini and other CLI agents in one workspace

β˜… 3.5k Β· +18 this week

24

Universal Modder πŸ€– AgentFree

Skills and tools that let any coding agent mod almost any PC game you own

β˜… 1.8k Β· +312 this week

25

Babysitter πŸ€– AgentOpen source

Code-defined agent workflows with quality gates, approval breakpoints and resumable journals

β˜… 1.8k Β· +14 this week

26

evo πŸ€– AgentOpen source

Autoresearch loop that has coding agents run gated optimisation experiments on your codebase

β˜… 1.5k

27

Claude Codex Settings πŸ€– AgentOpen source

Plugin marketplace of skills, hooks, agents and MCP configs for four coding agents

β˜… 1.2k Β· +6 this week

28

Claude Code Agent Monitor πŸ€– AgentOpen source

Self-hosted real-time dashboard for Claude Code and Codex sessions, agents, tools and cost

β˜… 1.0k Β· +23 this week

29

Citadel πŸ€– AgentOpen source

Routing, repo-local memory, guarded workflows and handoffs around Claude Code and Codex

β˜… 922 Β· +-1 this week

30

Agent Swarm πŸ€– AgentOpen source

Self-hosted operating system for delegating work across a lead agent and Docker worker agents

β˜… 850 Β· +18 this week

31

nWave πŸ€– AgentOpen source

Seven-wave, human-gated workflow from idea to TDD-delivered code inside Claude Code

β˜… 617 Β· +1 this week

32

Hivemind πŸ€– AgentFreemium

Shared, searchable session memory that turns agent traces into team skills

β˜… 1.6k Β· +-1 this week

33

Oh My Subagents πŸ€– AgentFree

Local orchestration for Claude and Codex subagent teams with durable, recoverable state

β˜… 179 Β· +36 this week

34

Claude Code Settings πŸ€– AgentOpen source

Curated skills, subagents and multi-provider config templates for Claude Code

β˜… 1.7k Β· +4 this week

35

Autoprompt πŸ€– AgentOpen source

Installs a plan, build and independent-review loop into your coding agent

β˜… 1.3k Β· +6 this week

36

Codeman πŸ€– AgentOpen source

Self-hosted mission control to run and monitor terminal AI coding agents from any browser

β˜… 782 Β· +14 this week

37

Obelisk πŸ€– AgentOpen source

Index past coding-agent sessions into local SQLite, queryable by your agent and browsable by you

β˜… 551 Β· +11 this week

38

Awesome Codex CLI πŸ€– AgentFree

Curated list of tools, subagents, skills, plugins and MCP servers for OpenAI Codex CLI

β˜… 540 Β· +9 this week

39

Subtask πŸ€– AgentOpen source

Claude Code skill and CLI to run tasks as subagents in parallel Git worktrees

β˜… 339 Β· +-1 this week

40

Codex Team Mode πŸ€– AgentFree

A Codex skill that splits complex tasks across Explorer, Executor, Reviewer and Advisor sub-agents

β˜… 213 Β· +47 this week

41

AI-Driven Development πŸ€– AgentOpen source

Cross-agent skills for disciplined AI development, plus a Bash safety hook for Claude Code

β˜… 151 Β· +2 this week

43

Codex Astra Luna Orchestrator πŸ€– AgentOpen source

Codex config where a stronger model orchestrates and a cheaper one executes, with an independent reviewer

β˜… 1.7k Β· +53 this week

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