Skills
A skill is a Markdown file with structured front-matter that describes a behavior the agent can perform. Skills sit between "the model knows how to write code" and "the model can press buttons" — they encode reusable workflows that the agent can pick up and execute.
30 bundled skills
The desktop client ships with 30 skills out of the box, in resources/bundled-skills/. They fall into clusters:
Productivity
tasks— create and manage conversation-scoped todostodo— legacy todo supportscheduler— schedule prompts to run on a cron-style intervalnotebook— persistent text notes inside a workspacework-log— time-track and summarise daily activityplan-mode— structured planning before execution
Automation & tools
computer-use— drive macOS apps (paired with the Computer Use daemon)browser— drive Chrome via the Ghast Browser Relay extensionscreenshot— capture screen or windowweb-fetch— HTTP GET/POST, parse HTML/JSONweb-search— web search (Bing, custom engines) with screenshot capturesurf— a higher-level web browsing toolkitfile-manager— browse and open filessend-file— attach a file to an outgoing message
Memory & introspection
memory-management— create / recall / delete memoriesself-management— reflection on conversation context and goalsself-reflection— scheduled self-analysis of user behaviour
Skill & conversation management
skill-hub— discover and install skills from a marketplaceskill-search— search installed skillsconversation-management— archive, search, rename, fork conversations
Messaging
telegram— send / receive in Telegram bridgesdiscord— send / receive in Discord bridgesreactions— emoji reactions on remote messagesvoice— voice recording + transcription (Whisper), TTS playback
Finance & markets
market-intel— crypto / stock market data fetchingokx-review— OKX exchange trade reviewbtc-grid-buy-okb— BTC / OKB grid trading (automated buy orders)kline-indicator— candlestick chart analysis
Social search
x-search— Twitter / X searchrednote-search— Xiaohongshu / Red Note search
The Skill Picker
In the composer, the skill picker is a grouped browser:
| Group | What's in it |
|---|---|
| Built-in | The 30 bundled skills above |
| Personal | Skills you authored or imported |
| Claude Code | Skills discovered in ~/.claude/skills/ |
| Codex | Skills discovered in ~/.codex/skills/ |
| Marketplace | Skills downloaded from the Ghast skill marketplace via skill-hub |
| Project | Skills declared in a project workspace's .ghast/skills/ |
| Custom | Anything else added through Settings → Skills |
You can pick a skill explicitly per turn, or enable Auto-select to let Ghast decide based on your prompt.
How a skill is invoked
When a skill is active for a turn:
- The skill's prompt fragment is prepended to the system prompt.
- The skill's declared tools are made available to the agent.
- The agent decides whether and how to use the skill based on your request.
If the agent calls a tool the skill exposes, you'll see a tool call card with the arguments and the result, just like any other tool. Skill execution is not hidden — every step is visible in the chat.
Installing additional skills
Three ways:
| Way | Steps |
|---|---|
| Marketplace | Use skill-hub in chat ("install the X skill") or browse Settings → Skills → Marketplace |
| Local file | Drop a *.md file into <profile>/skills/personal/ and the scanner picks it up |
| From a neighbour | If you have Claude Code or Codex skills at ~/.claude/skills/ or ~/.codex/skills/, they appear automatically |
Writing your own skill
A skill is a single Markdown file. Front-matter declares its name, description, tool list, and activation hints. The body is the prompt fragment that's prepended when the skill is active.
Authoring is covered in the developer documentation, not this manual.
Disabling skills
Settings → Skills lists every installed skill. Toggle individual skills off, or use the Skill Picker's per-turn override. Disabled skills don't appear in Auto-select.