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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

Creates and revises agent skills by structuring SKILL.md files with valid frontmatter, clear guidance, references and optional validation.

DevelopmentGitHub stars: 599Installs: 27k

Diagnoses GitHub Actions failures for a pull request, extracts logs, categorises errors and produces a fix plan without changing code.

DevelopmentGitHub stars: 599Installs: 27k

Guides the creation and review of Warp- and Oz-branded assets using the canonical hosted brand guidance for style, voice and implementation.

DesignGitHub stars: 599Installs: 26.7k

Better Typography

Jakub Krehel

Improves CSS typography with type scales, font loading and wrapping rules for consistent interfaces.

DesignGitHub stars: 7.4kInstalls: 26.8k

Ponytail Help

DietrichGebert

Lists ponytail's modes, commands, skills, deactivation phrases, configuration options and update steps in a one-shot reference card.

ProductivityGitHub stars: 151kInstalls: 26.7k

Ponytail Debt

DietrichGebert

Harvests ponytail comments into a grouped debt ledger, showing each shortcut's ceiling, upgrade trigger and missing trigger risks.

DevelopmentGitHub stars: 151kInstalls: 26.6k

Compares a pull request with approved product and technical specifications, adding material mismatches to the existing review output.

DevelopmentGitHub stars: 599Installs: 25.6k

Better Colors

Jakub Krehel

Builds project colour systems with semantic tokens, generated ramps, format conversion, gradient guidance and measured contrast checks.

DesignGitHub stars: 7.4kInstalls: 25.3k

Ponytail Gain

DietrichGebert

Shows Ponytail's benchmark impact on code volume, cost and speed as a compact one-shot scoreboard.

DevelopmentGitHub stars: 151kInstalls: 25.2k

Show Me

HumanLayer

Creates concise diagrams, code sketches and focused HTML artefacts to make algorithms, architecture, control flow and UI structure easier to understand.

ProductivityGitHub stars: 4.8kInstalls: 24.1k

Better Layout

Jakub Krehel

Improves interface layouts by organising space, alignment, reading order, responsive behaviour and progressive disclosure across screen sizes.

DesignGitHub stars: 7.4kInstalls: 23.6k

Better Interface

Jakub Krehel

Coordinates accessibility, layout, writing, typography, colour and UI-polish reviews into one evidence-based interface verdict.

DesignGitHub stars: 7.4kInstalls: 23.3k

WeCom CLI Doc

企业微信开发者

Creates, imports, reads and updates WeCom online documents through the wecom-cli command-line tool, with append and overwrite handling.

DocumentsGitHub stars: 3.2kInstalls: 22.5k

Reviews and fixes web interfaces for accessible semantics, keyboard use, focus management, forms, motion and screen-reader support.

DevelopmentGitHub stars: 7.4kInstalls: 22.7k

Better Writing

Jakub Krehel

Improves product interface copy in a codebase with clear language, consistent terminology, accessible labels and actionable errors.

WritingGitHub stars: 7.4kInstalls: 22.4k

Lavish

Kun Chen

Turns complex agent responses into reviewable HTML pages with lavish-axi, allowing annotations and feedback in the browser.

ProductivityGitHub stars: 3.9kInstalls: 20k

Agent Reach

PnantAudit warning

Routes internet research through Agent Reach across 16 platforms, using CLI, API and browser backends for search, social, jobs, code, video and finance.

ResearchGitHub stars: 87.8kInstalls: 17.9k

Drafts Warp feature documentation from product and technical specs, verifies claims in the codebase, and produces an MDX page with a review-ready draft PR.

WritingGitHub stars: 599Installs: 17.8k

Diagnoses and reduces Neon Postgres egress by finding high-transfer queries and fixing overfetching, unbounded results and repeated data.

DataGitHub stars: 98Installs: 15.9k

Provides branch-aware S3-compatible object storage for Neon projects, with buckets, uploads, downloads, presigned URLs and standard AWS tooling.

DevelopmentGitHub stars: 98Installs: 14.7k

Neon Functions

NeonOfficial

Deploys long-running Node.js HTTP functions on Neon branches for APIs, streaming, WebSockets, webhooks and scheduled or storage-triggered workloads.

DevelopmentGitHub stars: 98Installs: 14.5k

Guides developers through Google Cloud account authentication, project selection or creation, billing setup and deployment verification.

DevelopmentGitHub stars: 20.6kInstalls: 14.1k

Explains how to authenticate and authorise Google Cloud users, services and external workloads with secure credential and IAM choices.

DevelopmentGitHub stars: 20.6kInstalls: 14k

Neon AI Gateway

NeonOfficial

Connects Neon projects to multiple LLM providers through one branch-scoped credential, supporting SDK calls, model switching and agent workflows.

DevelopmentGitHub stars: 98Installs: 14.4k

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.

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