Agent tools that work with Codex

Google's open-source AI agent that brings Gemini into the terminal.

OpenHands: an open-source platform for AI-driven software development.

HeyGen's open-source framework that renders HTML, CSS and seekable animations to MP4 video, with agent skills and a Claude Code plugin.

Reference repository of Claude Code practices for subagents, commands, skills, hooks, MCP, settings and memory, with example implementations.

A framework for orchestrating role-playing, autonomous AI agents.

Web app, desktop app and MCP server for creating and editing draw.io diagrams by chatting with an AI model; exports .drawio, .png or .svg.

Trail-code (formerly graft): local code index and team-learnings layer that gives Claude Code, Cursor, Codex and other agents codebase context; optional Trail workspace.

Open-source AI memory platform that turns documents and conversations into a searchable knowledge graph for agents.

Local, browser-based review surface where you annotate coding-agent plans, specs and code diffs and send the feedback back to the agent via hooks.

designlang: CLI that extracts a website's design system into DTCG tokens, Tailwind, Figma variables and more, with an MCP server for coding agents.

NVIDIA's security scanner for agent skills: static analysis plus optional LLM review for prompt injection, data exfiltration and other risks.

OpenAI's lightweight coding agent that runs in your terminal.

GitHub CLI extension that compiles Markdown agentic workflows into GitHub Actions, running engines such as Copilot, Claude Code or Codex in sandboxed jobs.

Hook that blocks destructive Git and file-system commands and access to secrets before a coding agent runs a tool call; per its README, it is not a sandbox.

A CLI for analyzing coding-agent token usage and cost from local logs.

Semantic memory for coding agents, kept as Markdown files with a Milvus index; plugins for Claude Code, Codex, OpenCode and others, plus a CLI and Python API.

Hivemind by Activeloop: cloud-backed shared memory that turns agent session traces into reusable skills across Claude Code, Codex, Cursor and others.

A Claude Code guide covering workflows, hooks, skills and MCP servers, with templates and a stdio MCP server for querying it; guide licensed CC BY-SA 4.0.

Indexes past Claude Code, Codex, pi and Hermes sessions into durable searchable memory publishable on Hugging Face Hub.