Terminal CLI
Codex
OpenAI's Codex is a command-line coding agent built for autonomous software engineering tasks. It runs locally, executes tools in a sandbox, and pairs with GPT-class models.
Codex plugins on BuySkills
All comparisons
Codex vs OpenCode
A head-to-head look at Codex and OpenCode — two popular AI coding agents — and how BuySkills fits into each workflow.
Terminal CLI
OpenCode
OpenCode is an open-source, terminal-based AI coding agent that works with any provider — Anthropic, OpenAI, local models, and more. Its provider-agnostic design makes it a favorite for developers who want portability.
OpenCode plugins on BuySkillsSide-by-side
| Dimension | Codex | OpenCode |
|---|---|---|
| Surface | Terminal CLI | Terminal CLI |
| In a nutshell | OpenAI's coding agent CLI | Open-source terminal AI coding agent |
| BuySkills install command | npx buyskills install <skill> | npx buyskills install <skill> |
| Cross-agent skill sharing | Yes — via BuySkills | Yes — via BuySkills |
Use both with a single skill catalog
You don't have to pick. BuySkills lets you install a skill once and use it across Codex, OpenCode, and every other supported AI coding agent — without repurchasing or reconfiguring.
- One command to install in either agent:
npx buyskills install <skill> - Skills pinned to a version you choose — Codex or OpenCode updates won't break your loop
- Explore plugins by category: testing, refactoring, documentation, git workflows, and more
Codex vs OpenCode — FAQ
Should I pick Codex or OpenCode?
It depends on where you work. Codex is openai's coding agent cli, while OpenCode is open-source terminal ai coding agent. Many developers use both and share skills across them via BuySkills — so the choice is less binary than it used to be.
Can I use the same plugins in Codex and OpenCode?
Yes. BuySkills is designed for cross-agent portability. Install a skill once with the BuySkills CLI and it becomes available in both Codex and OpenCode — and every other supported agent — without a second purchase or install.
How is installing BuySkills skills different between Codex and OpenCode?
It isn't, from your side. You run `npx buyskills install <skill>`, and the CLI writes the skill to the directory each agent reads from. Codex and OpenCode pick up the skill without any extra config.
Are BuySkills skills compatible with Codex's sandbox?
Yes. BuySkills skills are packaged as portable prompt + tool definitions that run inside Codex's sandbox the same way a local skill would. No special permissions are required beyond the ones the skill itself declares.
Does OpenCode support MCP alongside BuySkills skills?
Yes. OpenCode supports MCP servers and BuySkills skills in parallel. You can use MCP for long-running services and BuySkills for bundled, versioned capabilities — they do not conflict.
Still deciding?
Install BuySkills CLI once and the skills you discover today work in whichever agent you pick tomorrow.
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