modes
crux ships with 24 specialized modes. each configures the AI's system prompt, temperature, and tool access for a specific type of work.
see modes system docs for how to create custom modes.
coding
| mode | focus | temp | tools |
|---|
| build-py | Python development, security-first | 0.4 | full |
| build-ex | Elixir / Phoenix / Ash | 0.4 | full |
| test | test-first development | 0.4 | full |
architecture
| mode | focus | temp | tools |
|---|
| plan | software design and architecture | 0.6 | read-only |
| infra-architect | deployment, CI/CD, infrastructure | 0.6 | read-only |
quality
| mode | focus | temp | tools |
|---|
| review | code review | 0.6 | read-only |
| debug | root cause analysis | 0.6 | full |
| security | adversarial vulnerability analysis | 0.6 | full |
communication
| mode | focus | temp | tools |
|---|
| explain | teaching, mentoring | 0.4 | read-only |
| analyst | data analysis | 0.4 | full |
| writer | professional writing | 0.4 | limited |
| marketing | build-in-public content | 0.4 | limited |
| build-in-public | shipping updates, social content | 0.7 | limited |
decision-making
| mode | focus | temp | tools |
|---|
| psych | ACT, attachment theory, shadow work | 0.6 | read-only |
| legal | legal research, contracts | 0.6 | limited |
| strategist | first principles, pre-mortems | 0.6 | limited |
infrastructure
| mode | focus | temp | tools |
|---|
| ai-infra | LLM stack optimization | 0.5 | full |
| mac | macOS administration | 0.4 | limited |
| docker | containers, Linux | 0.4 | full |
design
| mode | focus | temp | tools |
|---|
| design-ui | UI component implementation | 0.4 | full |
| design-system | design system creation | 0.4 | full |
| design-review | design quality review | 0.6 | read-only |
| design-responsive | responsive layout | 0.4 | full |
| design-accessibility | WCAG compliance | 0.4 | full |