Plugins for Coding Agents

Install the official skills as plugins through the Claude Code, Cursor, and Codex marketplaces.

Overview

Confident AI's Agent Skills also ship as plugins — the packaging format Claude Code, Cursor, and Codex use to distribute skills through their plugin marketplaces. A plugin is a thin wrapper: a manifest in the SDK repository that points at its skills/ folder, so installing the plugin installs every skill in the repo at once and your client keeps it updated through its marketplace.

If you already installed the skills individually (for example with npx skills add), you don't need the plugins too — they deliver the same SKILL.md files. Plugins are the better choice when you want one-command installs, team-wide distribution, or your client's built-in update flow.

Available Plugins

Plugin	Repository	Bundles	Claude Code	Cursor	Codex
`confident-client`	`confident-ai/confident-client`	`confident-client`	Yes	Yes	Yes
`deepeval`	`confident-ai/deepeval`	`deepeval`, `deepeval-tracing`, `deepeval-otel`	Yes	Yes	No

Each repository doubles as its own plugin marketplace — deepeval-plugins for the DeepEval repo and confident-ai-plugins for the Admin SDK repo — so you add the repo as a marketplace source once, then install by plugin name.

Claude Code

Add the repo as a marketplace, install the plugin, and reload:

/plugin marketplace add confident-ai/deepeval
/plugin install deepeval@deepeval-plugins
/reload-plugins

/plugin marketplace add confident-ai/confident-client
/plugin install confident-client@confident-ai-plugins
/reload-plugins

Run /plugins afterwards to confirm the plugin appears under your installed plugins.

Cursor

Both repositories carry a Cursor plugin manifest (.cursor-plugin/plugin.json). Install either by pasting the repository URL into the plugin search in Cursor's Customize panel, or from the chat with the same marketplace commands Claude Code uses:

/plugin marketplace add https://github.com/confident-ai/deepeval

Swap in https://github.com/confident-ai/confident-client for the admin plugin. Once installed, Cursor discovers every skill in the repo's skills/ folder automatically — the agent activates them on matching prompts, or you can invoke one explicitly by typing / followed by the skill name.

Codex

The confident-client repository ships a Codex plugin and its own marketplace file (.agents/plugins/marketplace.json). Register the repo as a marketplace source, then install by name:

codex plugin marketplace add confident-ai/confident-client
codex plugin add confident-client

You can also browse and install it from the /plugins picker inside the Codex TUI. The DeepEval repo doesn't ship a Codex plugin yet — install its skills on Codex with the Skills CLI instead:

npx skills add confident-ai/deepeval --skill "deepeval"

FAQs

I already installed the skills — do I need the plugins too?

No. Plugins deliver the same SKILL.md files the Skills CLI does, so installing both just duplicates them. Pick plugins for one-command installs and marketplace updates; pick the Skills CLI for installing a single skill or for clients without a plugin system.

How do plugin updates work?

Your client tracks the repository as a marketplace source, so updates flow through its own mechanism — Claude Code and Cursor refresh from the marketplace, and Codex re-fetches with codex plugin marketplace upgrade. Skills installed by copy or CLI are static snapshots by comparison.

Why isn't there a Codex plugin for deepeval?

The DeepEval repo doesn't ship a Codex plugin manifest yet — only confident-client does. On Codex, install the DeepEval skills with the Skills CLI (npx skills add confident-ai/deepeval --skill "deepeval") until it lands.

Is installing straight from a GitHub repo safe?

Installing from a repo URL means trusting that repo rather than a curated marketplace review. Here the repos are the same public, Apache-2.0 Confident AI repositories the SDKs ship from, and every instruction the skills give your agent is readable in the repo before you install.

Next Steps

A plugin only delivers the skills — each skill still has its own prerequisites (the deepeval or confidentai package, and the right API key). See the individual skill pages for what to set up and example prompts:

Agent Skills Overview

What each skill does, which API key it needs, and every install method side by side.

MCP Server

Pair the plugins with live access to your project's traces, datasets, and evals.

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Last updated on August 14, 2026