--- title: "Agent skills that work the same in Codex, Cursor, Claude Code and more" canonical_url: https://cookiesforai.app/skills/cross-agent last_updated: 2026-10-02T03:01:13+02:00 type: index summary: "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)." --- # 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 | License | Last changed | |---|---|---| | [AI SEO](https://cookiesforai.app/skills/coreyhaines31/ai-seo) | MIT | 2026-09-05 | | [Brand Guidelines](https://cookiesforai.app/skills/anthropics/brand-guidelines) | Apache-2.0 | 2026-04-20 | | [Canvas Design](https://cookiesforai.app/skills/anthropics/canvas-design) | Apache-2.0 | 2026-04-20 | | [Code review](https://cookiesforai.app/skills/getsentry/code-review) | Apache-2.0 | 2026-04-19 | | [Database migration](https://cookiesforai.app/skills/wshobson/database-migration) | MIT | 2026-05-22 | | [Design taste frontend](https://cookiesforai.app/skills/leonxlnx/design-taste-frontend) | MIT | 2026-05-26 | | [EAS app stores](https://cookiesforai.app/skills/expo/eas-app-stores) | MIT | 2026-09-09 | | [Expo Router](https://cookiesforai.app/skills/expo/expo-router) | MIT | 2026-09-08 | | [Firebase security rules auditor](https://cookiesforai.app/skills/firebase/firebase-security-rules-auditor) | Apache-2.0 | 2026-09-17 | | [Frontend Design](https://cookiesforai.app/skills/anthropics/frontend-design) | Apache-2.0 | 2026-09-03 | | [Hugging Face CLI](https://cookiesforai.app/skills/huggingface/hf-cli) | Apache-2.0 | 2026-10-01 | | [HyperFrames](https://cookiesforai.app/skills/heygen-com/hyperframes) | Apache-2.0 | 2026-09-28 | | [Internal Comms](https://cookiesforai.app/skills/anthropics/internal-comms) | Apache-2.0 | 2026-04-20 | | [Mutation testing](https://cookiesforai.app/skills/trailofbits/mutation-testing) | CC-BY-SA-4.0 | 2026-09-16 | | [Obsidian Markdown](https://cookiesforai.app/skills/kepano/obsidian-markdown) | MIT | 2026-03-22 | | [Postgres Best Practices](https://cookiesforai.app/skills/supabase/supabase-postgres-best-practices) | MIT | 2026-07-30 | | [Prisma upgrade to v7](https://cookiesforai.app/skills/prisma/prisma-upgrade-v7) | MIT | 2026-09-29 | | [Programmatic SEO](https://cookiesforai.app/skills/coreyhaines31/programmatic-seo) | MIT | 2026-05-14 | | [React Best Practices](https://cookiesforai.app/skills/vercel-labs/vercel-react-best-practices) | MIT | 2026-04-14 | | [React Composition Patterns](https://cookiesforai.app/skills/vercel-labs/vercel-composition-patterns) | MIT | 2026-01-28 | | [React Native](https://cookiesforai.app/skills/vercel-labs/vercel-react-native-skills) | MIT | 2026-01-27 | | [React View Transitions](https://cookiesforai.app/skills/vercel-labs/vercel-react-view-transitions) | MIT | 2026-08-28 | | [Refactor module](https://cookiesforai.app/skills/hashicorp/refactor-module) | MPL-2.0 | 2026-08-26 | | [Remotion best practices](https://cookiesforai.app/skills/remotion-dev/remotion-best-practices) | No license file in the skills repo | 2026-10-01 | | [Semgrep rule creator](https://cookiesforai.app/skills/trailofbits/semgrep-rule-creator) | CC-BY-SA-4.0 | 2026-09-16 | | [SEO audit](https://cookiesforai.app/skills/coreyhaines31/seo-audit) | MIT | 2026-08-19 | | [Slack GIF Creator](https://cookiesforai.app/skills/anthropics/slack-gif-creator) | Apache-2.0 | 2026-04-20 | | [Supabase](https://cookiesforai.app/skills/supabase/supabase) | MIT | 2026-09-28 | | [Supply chain risk auditor](https://cookiesforai.app/skills/trailofbits/supply-chain-risk-auditor) | CC-BY-SA-4.0 | 2026-09-16 | | [TDD](https://cookiesforai.app/skills/mattpocock/tdd) | MIT | 2026-09-17 | | [Terraform policy](https://cookiesforai.app/skills/hashicorp/terraform-policy) | MPL-2.0 | 2026-09-28 | | [Terraform skill](https://cookiesforai.app/skills/antonbabenko/terraform-skill) | Apache-2.0 | 2026-06-03 | | [Terraform style guide](https://cookiesforai.app/skills/hashicorp/terraform-style-guide) | MPL-2.0 | 2026-08-10 | | [Terraform test](https://cookiesforai.app/skills/hashicorp/terraform-test) | MPL-2.0 | 2026-08-10 | | [Theme Factory](https://cookiesforai.app/skills/anthropics/theme-factory) | Apache-2.0 | 2026-04-20 | | [Vercel CLI with Tokens](https://cookiesforai.app/skills/vercel-labs/vercel-cli-with-tokens) | MIT, stated only in the repository README (no license file) | 2026-04-17 | | [Webapp Testing](https://cookiesforai.app/skills/anthropics/webapp-testing) | Apache-2.0 | 2026-04-20 | | [Workers best practices](https://cookiesforai.app/skills/cloudflare/workers-best-practices) | 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.