Skip to main content

By agent · Codex

Codex skills: 1008 worth installing

Skills in the open SKILL.md format that Codex reads. Each one has a plain-language summary and the command to install it.

Installing a skill in Codex

$ npx skills add <author>/<skill> --agent codex

Replace the placeholder with the author and skill name from the skill's page. Start a new Codex session afterwards so the skill is picked up.

Skills for Codex

All skills

Auth0

Auth0Official

Adds or fixes Auth0 authentication in an app: sign-in, sessions and tokens, route protection, MFA and passwordless login.

DevelopmentGitHub stars: 52Installs: 3.2k

HyperFrames Registry

HeyGenOfficial

Finds, installs and wires reusable HyperFrames blocks and components for visual effects, transitions, charts and other video elements.

Video and mediaGitHub stars: 55.6kInstalls: 661k

Media Use

HeyGenOfficial

Resolves, generates and transforms media for HyperFrames projects, including audio, visual assets, voiceover and colour treatments.

Video and mediaGitHub stars: 55.6kInstalls: 633k

HyperFrames Core

HeyGenOfficial

Defines the HyperFrames HTML contract for renderable video compositions, including timed clips, media, tracks, sub-compositions and validation.

Video and mediaGitHub stars: 55.6kInstalls: 623k

HyperFrames Animation

HeyGenOfficial

Guides HyperFrames animation work with reusable motion rules, scene blueprints and runtime adapters for GSAP, Lottie, Three.js and more.

Video and mediaGitHub stars: 55.6kInstalls: 612k

HyperFrames Creative

HeyGenOfficial

Directs non-animated HyperFrames video design with palettes, typography, narration, beat planning, composition and audio-reactive visual guidance.

Video and mediaGitHub stars: 55.6kInstalls: 586k

HyperFrames Keyframes

HeyGenOfficial

Authors seek-safe 2D and 3D keyframes in HyperFrames for zooms, reframes and camera moves.

Video and mediaGitHub stars: 55.6kInstalls: 478k

Writing Beats

Matt Pocock

Walks a writer through Markdown source material one beat at a time, explaining each concept before moving on and letting the writer choose where to go next.

WritingGitHub stars: 274kInstalls: 405k

Writing Shape

Matt Pocock

Shapes raw material from a markdown file into an article through chosen openings, grounded concepts and paragraph-by-paragraph drafting.

WritingGitHub stars: 274kInstalls: 405k

Expands a writer's raw ideas into saved Markdown fragments through a relentless interview, without imposing an outline or article structure.

WritingGitHub stars: 274kInstalls: 405k

Scaffolds ai-hero-cli course exercise directories with numbered sections, variants and lint-ready readme files.

DevelopmentGitHub stars: 274kInstalls: 405k

Loop Me

Matt Pocock

Interviews a user about recurring work and turns the answers into complete workflow specifications in a workspace.

ProductivityGitHub stars: 274kInstalls: 361k

HyperFrames Audio

HeyGenOfficial

Mixes placed audio in HyperFrames with fades, automation, effects, ducking and voiceover carving for clearer relationships between tracks.

Video and mediaGitHub stars: 55.6kInstalls: 333k

Sets up dependency-cruiser in a TypeScript repository to enforce package entry points, hide subfolder implementation, and verify the boundary rules.

DevelopmentGitHub stars: 274kInstalls: 291k

HyperFrames Figma

HeyGenOfficial

Imports Figma assets, brand tokens and components into HyperFrames, then reconstructs motion and storyboard frames as deterministic video compositions.

Video and mediaGitHub stars: 55.6kInstalls: 193k

HyperFrames Studio

HeyGenOfficial

Organises HyperFrames Studio projects into editable film timelines with scene structure, caption tracks, element grouping and safe-zone placement.

Video and mediaGitHub stars: 55.6kInstalls: 137k

Caveman Learn

Julius Brussee

Reviews Caveman token-cost reports and applies consent-gated edits to reduce repeated context and heavy configuration.

ProductivityGitHub stars: 109kInstalls: 80k

Caveman Optimize

Julius Brussee

Reviews Caveman's report-only optimisation findings, then designs an operator-approved change and measures it against a paired baseline.

DevelopmentGitHub stars: 109kInstalls: 79.9k

Reviews Caveman Cloud evidence to explain LLM spend through costs, traces and verified savings.

DataGitHub stars: 109kInstalls: 78.9k

Caveman Discover

Julius Brussee

Labels LLM call sites by human-named workflow for Caveman Cloud, proposes the mapping for approval, applies minimal changes, and verifies a path.

DevelopmentGitHub stars: 109kInstalls: 78.8k

Caveman Manage

Julius Brussee

Inspects Caveman Cloud experiments, evaluates evidence and guardrails, and recommends safe lifecycle actions without executing mutations.

ProductivityGitHub stars: 109kInstalls: 78.6k

Caveman Setup

Julius Brussee

Wires LLM clients through the Caveman Cloud gateway to measure requests and spend without changing model behaviour.

DevelopmentGitHub stars: 109kInstalls: 77.9k

GWS Shared

Google WorkspaceOfficial

Standardises authentication, flags, request syntax and output handling for the gws CLI, including pagination, uploads and dry-run validation.

ProductivityGitHub stars: 31.2kInstalls: 63.2k

GSAP Core

GreenSock

Builds GSAP animations with core tweens, easing and responsive reduced-motion handling.

DevelopmentGitHub stars: 15.9kInstalls: 62k

Questions

Codex and skills.

Do Claude skills work in Codex?

Often. A skill is a folder of instructions and scripts in the open SKILL.md format, which Codex reads. A skill that depends on tools only one agent provides will not carry over, so read the skill's source before you rely on it.

How do I install a skill in Codex?

Each skill page has an install command. Run it in a terminal, then start a new Codex session so the skill is picked up.

What is the difference between a skill and an instructions file such as AGENTS.md?

An instructions file is loaded in every session and describes the project. A skill is loaded only when a task calls for it, so it can be long and specific without costing context on every turn.

Other agents