Codex skills: 1008 worth installing

Structures Dart command-line applications: entrypoints, exit codes, stream routing, argument parsing and subprocesses.

Runs dart analyze to find warnings and errors, and applies dart fix to resolve mechanical lint issues.

Applies Dart 3 pattern matching, switch expressions and destructuring to replace complex if-else chains.

Reference for building production Tavily integrations: web search, content extraction, crawling and research.

Sets up, authenticates and troubleshoots the Tavily CLI, and helps choose between its web commands.

Crawls a website and extracts content from many pages through the Tavily CLI.

Runs Tavily searches programmatically and filters large results before they enter the model's context.

Extracts clean markdown or text from specific URLs through the Tavily CLI.

Discovers and lists all the URLs on a website without extracting content, through the Tavily CLI.

Conducts in-depth research with citations through the Tavily CLI, for reports, comparisons and market analysis.

Searches the web through the Tavily CLI and returns results optimised for LLMs.

Builds voice AI agents with ElevenLabs, such as voice assistants and customer service bots with tools and workflows.

Dubs audio and video into other languages with the ElevenLabs Dubbing API, keeping the original speakers' voices.

Generates music with the ElevenLabs Music API: instrumental tracks, songs with lyrics, background music and jingles.

Generates sound effects from text descriptions with ElevenLabs: ambient sounds, cinematic impacts and UI sounds.

Transcribes audio and video to text with ElevenLabs Scribe v2, for subtitles and meeting transcripts.

Converts text to speech with ElevenLabs voices in more than 90 languages, for voiceovers and voice apps.

Changes the voice in a recording to a different target voice with ElevenLabs, keeping emotion, timing and delivery.

Removes background noise and isolates speech from audio with the ElevenLabs Voice Isolator API.

Provides CLI tools for looking up Svelte 5 documentation and analysing code while writing Svelte components.

Guidance on writing fast, modern Svelte code: reactivity, event handling, styling and library integration.

Security guidelines for writing code and reviewing it for vulnerabilities such as SQL injection.

Security guidelines for LLM applications, based on the OWASP Top 10 for LLM 2025.

Runs Semgrep static analysis scans and writes custom detection rules.