Skills
Write a skill in Markdown.
Skills are reusable chunks of instruction — name + prompt + access config — that you can invoke with /skill invoke or reference as @skill:<name>. Here's the 4-minute tour of the creator.
~4 min·Beginner·12 steps
~/projects/centaurus
centaurus — type /help for commands
CWD: ~/projects/centaurus·Model: GPT-OSS 120BMode: Auto [Agent]
> Ask anything ...
Step 01/12Start at the main chat screen
Fork vs Inline execution
‘Fork’ runs the skill as an independent parallel agent with its own usage budget and tool access — best for multi-step tasks like reading files or running commands. ‘Inline’ expands the skill's instructions into your current conversation — faster, no isolation.
Prompt arguments
Skill prompts can reference ${ARG} placeholders. Declare the argument names in the Argument Names field, then pass them when invoking — /skill invoke summarise-issue ISSUE=123.
Prefer dropping a SKILL.md?
Any SKILL.md file in your repo's .centaurus/skills/ directory is picked up automatically on session start — no creator needed.