Agent skills that do not depend on one agent
38 of the 91 agent skills we list install with the open skills CLI and, by our reading of their instructions, use no feature that only one agent has (no subagents, slash commands or one vendor's tools). They should behave the same in Codex, Cursor, Gemini CLI, GitHub Copilot, Claude Code and the other agents that read SKILL.md files.
| Skill | Publisher | License | Last changed |
|---|---|---|---|
| AI SEO ai-seo is Corey Haines's agent skill for answer engine optimization: the agent audits whether AI assistants cite your site, then restructures content and site files so AI search can extract and cite it. | Corey Haines | MIT | 2026-09-05 |
| Brand Guidelines Brand Guidelines is Anthropic's open-source agent skill that holds Anthropic's own brand colors and fonts, so an agent can give a document, slide deck or web artifact the Anthropic look. | Anthropic | Apache-2.0 | 2026-04-20 |
| Canvas Design Canvas Design is Anthropic's open-source agent skill for static visual work: the agent writes a design philosophy, then makes a poster or art piece as a finished PNG or PDF file. | Anthropic | Apache-2.0 | 2026-04-20 |
| Code review code-review is Sentry's agent skill for reviewing pull requests by Sentry's engineering practices: runtime errors, performance, side effects, compatibility, security, design, tests and the tone of feedback. | Sentry | Apache-2.0 | 2026-04-19 |
| Database migration database-migration is an agent skill from Seth Hobson's wshobson/agents marketplace for writing schema and data migrations in Sequelize, TypeORM and Prisma, with zero-downtime patterns and rollback strategies. | Seth Hobson | MIT | 2026-05-22 |
| Design taste frontend design-taste-frontend, the main skill in Leon Lin's Taste Skill repository, makes an AI agent read the brief, pick a design direction and build landing pages, portfolios and redesigns that avoid templated defaults. | Leon Lin | MIT | 2026-05-26 |
| EAS app stores eas-app-stores is the Expo team's agent skill for shipping mobile apps with EAS: build profiles, signing, version numbers, TestFlight and submissions to the App Store and Google Play. | Expo | MIT | 2026-09-09 |
| Expo Router expo-router is the Expo team's agent skill for navigation in Expo apps: file-based routes, native stacks and tabs, links with previews and context menus, modals, form sheets, headers and search bars. | Expo | MIT | 2026-09-08 |
| Firebase security rules auditor firebase-security-rules-auditor is the Firebase team's agent skill for auditing Firestore and Cloud Storage security rules for privilege escalation, update bypasses and missing limits, returning a 1 to 5 score in JSON. | Firebase (Google) | Apache-2.0 | 2026-09-17 |
| Frontend Design Frontend Design is Anthropic's open-source agent skill that steers an AI agent toward a look made for your product and away from the templated pages AI tends to produce. | Anthropic | Apache-2.0 | 2026-09-03 |
| Hugging Face CLI hf-cli is Hugging Face's agent skill for its hf command-line tool: it lets an agent download and upload models and datasets, manage repos, Spaces and buckets, read papers and run jobs on the Hub. | Hugging Face | Apache-2.0 | 2026-10-01 |
| HyperFrames hyperframes is HeyGen's entry-point agent skill for HyperFrames, its open-source framework that renders HTML, CSS and animations into MP4 video; it captures your brief and routes to the right video workflow. | HeyGen | Apache-2.0 | 2026-09-28 |
| Internal Comms Internal Comms is Anthropic's open-source agent skill for writing inside a company: the agent drafts 3P updates, company newsletters, FAQs and other internal messages in set formats. | Anthropic | Apache-2.0 | 2026-04-20 |
| Mutation testing mutation-testing is Trail of Bits' agent skill for configuring mutation testing campaigns with its mewt or muton tools, reading surviving mutants, telling equivalent mutants from real test gaps, and hunting bugs they expose. | Trail of Bits | CC-BY-SA-4.0 | 2026-09-16 |
| Obsidian Markdown obsidian-markdown is Steph Ango's agent skill for writing Obsidian Flavored Markdown: notes with properties, wikilinks, embeds, callouts and block references that render correctly in an Obsidian vault. | Steph Ango | MIT | 2026-03-22 |
| Postgres Best Practices Postgres Best Practices is Supabase's agent skill of Postgres rules for any Postgres database, ranked by impact: indexes, connection pooling, row level security and schema design. | Supabase | MIT | 2026-07-30 |
| Prisma upgrade to v7 prisma-upgrade-v7 is Prisma's agent skill for upgrading a project from Prisma ORM 6 to 7, covering every breaking change: the new generator, driver adapters, prisma.config.ts, ESM and removed features. | Prisma | MIT | 2026-09-29 |
| Programmatic SEO programmatic-seo is Corey Haines's agent skill for building SEO pages at scale from templates and data, such as location, comparison or integration pages, without tripping search engine spam policies. | Corey Haines | MIT | 2026-05-14 |
| React Best Practices React Best Practices is Vercel Engineering's agent skill of 70 performance rules for React and Next.js, ranked by impact, which the agent applies when it writes or reviews code. | Vercel | MIT | 2026-04-14 |
| React Composition Patterns React Composition Patterns is Vercel's agent skill for React component APIs: compound components, lifted state and explicit variants instead of a growing list of boolean props. | Vercel | MIT | 2026-01-28 |
| React Native React Native is Vercel's agent skill of React Native and Expo rules, ranked by impact: list performance, animations, native navigation and UI patterns for faster mobile apps. | Vercel | MIT | 2026-01-27 |
| React View Transitions React View Transitions is Vercel's agent skill for animating route changes, shared elements and list reorders with React's ViewTransition component, in Next.js and other React apps. | Vercel | MIT | 2026-08-28 |
| Refactor module refactor-module is HashiCorp's agent skill for turning a monolithic Terraform configuration into reusable modules, with typed interfaces, documentation, tests and a state migration that recreates no resources. | HashiCorp | MPL-2.0 | 2026-08-26 |
| Remotion best practices remotion-best-practices is Remotion's own agent skill and the entry point to its other video skills: it routes an agent to the right guide for creating, previewing, captioning and rendering Remotion videos in React. | Remotion | No license file in the skills repo | 2026-10-01 |
| Semgrep rule creator semgrep-rule-creator is Trail of Bits' agent skill for writing custom Semgrep rules that detect vulnerabilities and bug patterns, test-first, with taint mode preferred and every test required to pass. | Trail of Bits | CC-BY-SA-4.0 | 2026-09-16 |
| SEO audit seo-audit is Corey Haines's agent skill for diagnosing why a site is not ranking: the agent checks crawling, indexing, speed, on-page elements and content quality, then writes a prioritized fix list. | Corey Haines | MIT | 2026-08-19 |
| Slack GIF Creator Slack GIF Creator is Anthropic's open-source agent skill for animated GIFs sized for Slack: the agent draws the frames in Python, adds motion and checks the file meets Slack's limits. | Anthropic | Apache-2.0 | 2026-04-20 |
| Supabase Supabase is Supabase's own agent skill for any Supabase task, with a security checklist for auth and row level security and a rule to check the current docs first. | Supabase | MIT | 2026-09-28 |
| Supply chain risk auditor supply-chain-risk-auditor is Trail of Bits' agent skill for auditing a project's npm, PyPI and Go dependencies for known advisories, abandoned upstreams, publisher concentration and install scripts, measured by bundled scripts. | Trail of Bits | CC-BY-SA-4.0 | 2026-09-16 |
| TDD tdd is Matt Pocock's agent skill for test-driven development: the agent agrees which public interfaces to test with you, then works one failing test and one minimal fix at a time. | Matt Pocock | MIT | 2026-09-17 |
| Terraform policy terraform-policy is HashiCorp's agent skill for writing Terraform Policy files (.policy.hcl), testing them with .policytest.hcl, and converting Sentinel policies to the new format. | HashiCorp | MPL-2.0 | 2026-09-28 |
| Terraform skill terraform-skill is Anton Babenko's agent skill for writing, testing and reviewing Terraform and OpenTofu, which names the risk before it writes code and never recommends a production apply without a reviewed plan. | Anton Babenko | Apache-2.0 | 2026-06-03 |
| Terraform style guide terraform-style-guide is HashiCorp's agent skill for writing and reviewing Terraform HCL to the official style conventions: file layout, formatting, naming, typed variables, version pinning and a review checklist. | HashiCorp | MPL-2.0 | 2026-08-10 |
| Terraform test terraform-test is HashiCorp's agent skill for writing and running Terraform's built-in tests: .tftest.hcl files with run blocks, assertions, expected failures, mock providers and CI pipelines. | HashiCorp | MPL-2.0 | 2026-08-10 |
| Theme Factory Theme Factory is Anthropic's open-source agent skill with 10 ready color and font themes, plus custom ones on request, that an agent applies to slides, documents and web pages. | Anthropic | Apache-2.0 | 2026-04-20 |
| Vercel CLI with Tokens Vercel CLI with Tokens is Vercel's agent skill for running the Vercel CLI with an access token instead of vercel login: deploys, environment variables, logs and domains. | Vercel | MIT, stated only in the repository README (no license file) | 2026-04-17 |
| Webapp Testing Webapp Testing is Anthropic's open-source agent skill for testing local web apps: the agent writes Python Playwright scripts that click through your app, take screenshots and read console logs. | Anthropic | Apache-2.0 | 2026-04-20 |
| Workers best practices workers-best-practices is Cloudflare's agent skill for writing, reviewing and configuring production Cloudflare Workers, built around a table of anti-patterns to flag and current docs over memorized APIs. | Cloudflare | Apache-2.0 | 2026-10-01 |
This is a reading of each SKILL.md, not a test in every agent. Skills that rely on one agent's features say so on their own page.