---
name: architecture
description: Create or evaluate an architecture decision record (ADR). Use when choosing between technologies (e.g., Kafka vs SQS), documenting a design decision with trade-offs and consequences, reviewing a system design proposal, or designing a new component from requirements and constraints.
argument-hint: "<decision or system to design>"
---
# /architecture
> If you see unfamiliar placeholders or need to check which tools are connected, see [CONNECTORS.md](../../CONNECTORS.md).
Create an Architecture Decision Record (ADR) or evaluate a system design.
## Usage
```
/architecture $ARGUMENTS
```
## Modes
**Create an ADR**: "Should we use Kafka or SQS for our event bus?"
**Evaluate a design**: "Review this microservices proposal"
**System design**: "Design the notification system for our app"
See the **system-design** skill for detailed frameworks on requirements gathering, scalability analysis, and trade-off evaluation.
## Output — ADR Format
```markdown
# ADR-[number]: [Title]
**Status:** Proposed | Accepted | Deprecated | Superseded
**Date:** [Date]
**Deciders:** [Who needs to sign off]
## Context
[What is the situation? What forces are at play?]
## Decision
[What is the change we're proposing?]
## Options Considered
### Option A: [Name]
| Dimension | Assessment |
|-----------|------------|
| Complexity | [Low/Med/High] |
| Cost | [Assessment] |
| Scalability | [Assessment] |
| Team familiarity | [Assessment] |
**Pros:** [List]
**Cons:** [List]
### Option B: [Name]
[Same format]
## Trade-off Analysis
[Key trade-offs between options with clear reasoning]
## Consequences
- [What becomes easier]
- [What becomes harder]
- [What we'll need to revisit]
## Action Items
1. [ ] [Implementation step]
2. [ ] [Follow-up]
```
## If Connectors Available
If **~~knowledge base** is connected:
- Search for prior ADRs and design docs
- Find relevant technical context
If **~~project tracker** is connected:
- Link to related epics and tickets
- Create implementation tasks
## Tips
1. **State constraints upfront** — "We need to ship in 2 weeks" or "Must handle 10K rps" shapes the answer.
2. **Name your options** — Even if you're leaning one way, I'll give a more balanced analysis with explicit alternatives.
3. **Include non-functional requirements** — Latency, cost, team expertise, and maintenance burden matter as much as features.