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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

Angular Developer

AngularOfficial

Generates Angular code and gives architectural guidance on components, services, signals, forms and HTTP communication.

DevelopmentGitHub stars: 662Installs: 40.1k

Angular New App

AngularOfficial

Creates a new Angular application with the Angular CLI, following the team's guidelines for a modern setup.

DevelopmentGitHub stars: 662Installs: 16.7k

Firecrawl Agent

FirecrawlOfficial

Navigates websites on its own with Firecrawl and extracts structured data across pages.

DataGitHub stars: 643Installs: 80.4k

Firecrawl Crawl

FirecrawlOfficial

Extracts many pages from one site or section in bulk with Firecrawl.

DataGitHub stars: 643Installs: 80.3k

Firecrawl Download

FirecrawlOfficial

Saves a site or section as local markdown files and screenshots with Firecrawl, for offline reference.

DataGitHub stars: 643Installs: 79.5k

Firecrawl Interact

FirecrawlOfficialAudit warning

Drives a live browser on a scraped page with Firecrawl: click, fill forms, log in and paginate.

AutomationGitHub stars: 643Installs: 64.8k

Firecrawl Map

FirecrawlOfficial

Discovers and lists a site's URLs with Firecrawl, with search filtering.

DataGitHub stars: 643Installs: 79.8k

Firecrawl Monitor

FirecrawlOfficial

Sends a webhook or email alert when watched URLs change or new results appear on the web, using Firecrawl.

AutomationGitHub stars: 643Installs: 32.9k

Firecrawl Parse

FirecrawlOfficial

Converts a local PDF, DOCX, XLSX or HTML file to markdown with Firecrawl, or answers questions about its content.

DocumentsGitHub stars: 643Installs: 50.7k

Firecrawl Scrape

FirecrawlOfficial

Reads a known webpage with Firecrawl and returns its content or structured results.

DataGitHub stars: 643Installs: 82.8k

Firecrawl Search

FirecrawlOfficial

Finds web sources with Firecrawl, returning page excerpts relevant to the query and optionally the full page content.

ResearchGitHub stars: 643Installs: 83.2k

Firecrawl

FirecrawlOfficialAudit warning

Handles any live-web task through the Firecrawl CLI: search, page extraction, site mapping, bulk crawls and change alerts.

ResearchGitHub stars: 643Installs: 102k

DuckDB Attach DB

DuckDBOfficial

Attaches a DuckDB database file, explores its schema and saves the session state for later queries.

DataGitHub stars: 596Installs: 920

DuckDB Convert File

DuckDBOfficial

Converts a data file between formats such as CSV, Parquet, JSON, Excel and GeoJSON with DuckDB.

DataGitHub stars: 596Installs: 677

DuckDB Docs

DuckDBOfficial

Searches the DuckDB and DuckLake documentation and blog posts through a locally cached full-text index.

DataGitHub stars: 596Installs: 1.2k

DuckDB Query

DuckDBOfficial

Runs SQL, or answers natural-language questions, against an attached DuckDB database or directly against files.

DataGitHub stars: 596Installs: 1.3k

DuckDB Read File

DuckDBOfficial

Reads and profiles a data file or remote URL in CSV, JSON, Parquet, Avro, Excel, spatial or SQLite format with DuckDB.

DataGitHub stars: 596Installs: 1.1k

DuckDB S3 Explore

DuckDBOfficial

Explores and queries data on S3, Cloudflare R2, GCS, MinIO and other S3-compatible storage with DuckDB.

DataGitHub stars: 596Installs: 610

Shopify

ShopifyOfficialAudit warning

Covers every Shopify developer surface in one skill: the CLI, Admin and Storefront APIs, Functions, Polaris and themes.

DevelopmentGitHub stars: 584Installs: 994

UCP

ShopifyOfficial

Uses the UCP CLI to find, compare, buy and track products from online merchants.

ProductivityGitHub stars: 584Installs: 6k

chDB SQL

ClickHouseOfficial

Runs analytical SQL on local files, URLs, S3 paths and remote databases with chDB, without setting up a server.

DataGitHub stars: 543Installs: 7.8k

Helps design ClickHouse architectures and choose between ingestion and modelling patterns for a given workload.

DataGitHub stars: 543Installs: 8.6k

ClickHouse Best Practices

ClickHouseOfficial

Reviews ClickHouse schemas, queries and configurations against 31 documented rules.

DataGitHub stars: 543Installs: 11.7k

Dart Add Unit Test

DartOfficial

Writes and organises Dart unit tests for functions, methods and classes with package:test.

DevelopmentGitHub stars: 509Installs: 17k

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