adr-management
Create and manage Architecture Decision Records (ADRs). Use when documenting technology choices, design decisions, or architectural changes that need to be tracked over time. This is the CANONICAL ADR skill - all ADR-related work should use this skill.
What this skill does
# ADR Management
> **Note:** This is the canonical ADR skill for the plugin ecosystem. For detailed ADR templates (Nygard, MADR, Enterprise), use MCP tools (`perplexity`, `context7`) to research current best practices.
## When to Use This Skill
Use this skill when you need to:
- Document a technology choice or design decision
- Record why a particular approach was selected over alternatives
- Track the history of architectural decisions
- Create a searchable record of decisions for team onboarding
**Keywords:** adr, architecture decision record, decision log, why we chose, alternatives considered, design decision, technology choice
## ADR Workflow
### Creating a New ADR
1. **Determine the next ADR number**
- Check existing ADRs in `/architecture/adr/`
- Use sequential numbering: 0001, 0002, 0003, etc.
2. **Create the ADR file**
- Location: `/architecture/adr/NNNN-title-in-kebab-case.md`
- Use the template from `references/adr-template.md`
3. **Fill in required sections**
- Status: Start with "Proposed"
- Date: Current date in YYYY-MM-DD format
- Context: Describe the problem and constraints
- Decision: State the decision clearly
- Consequences: List positive, negative, and neutral outcomes
4. **Document alternatives**
- List each alternative considered
- Include pros, cons, and why it was rejected
5. **Optional: Generate context diagram**
- If visualization plugin is available, generate a diagram showing the decision's context
- Spawn the `visualization:diagram-generator` agent for C4 or component diagrams
- Or use the `visualization:diagram-patterns` skill for diagram type guidance
### ADR Status Lifecycle
| Status | Meaning |
| --- | --- |
| Proposed | Decision is under discussion |
| Accepted | Decision has been approved and implemented |
| Deprecated | Decision is no longer relevant but kept for history |
| Superseded | Decision has been replaced by a newer ADR |
When superseding an ADR:
1. Update the old ADR's status to "Superseded by ADR-XXXX"
2. Reference the old ADR in the new ADR's "Related Decisions" section
### Searching Existing ADRs
Before creating a new ADR, search for existing relevant decisions:
```bash
# Search ADR titles
ls /architecture/adr/
# Search ADR content for keywords
grep -r "keyword" /architecture/adr/
```
## Integration with Architecture Principles
Link ADRs to architecture principles when the decision:
- Implements a principle
- Makes a trade-off against a principle
- Establishes a new principle
Reference format: "This decision implements Principle P1: [Principle Name]"
## Template Reference
The ADR template is available at `references/adr-template.md`. Key sections:
- **Status**: Current state of the decision
- **Date**: When the decision was made
- **Deciders**: Who was involved
- **Context**: Problem and constraints
- **Decision**: What was decided
- **Consequences**: Outcomes (positive, negative, neutral)
- **Alternatives Considered**: What else was evaluated
- **Related Decisions**: Links to related ADRs
- **References**: Supporting documentation
## Best Practices
1. **One decision per ADR** - Keep ADRs focused
2. **Immutable history** - Never delete ADRs, only supersede
3. **Link decisions** - Reference related ADRs
4. **Include context** - Future readers need to understand the constraints
5. **Be honest about trade-offs** - Document negative consequences too
## Related: Specification-Driven ADRs
If you're extracting decisions FROM specifications, consider using the `spec-driven-development` plugin's `/spec:adr:create` which links ADRs directly to specification IDs (SPEC-xxx). Those ADRs are stored in `docs/adr/` (linked to specification IDs).
Both approaches use MADR format and can coexist in the same project.
## Repository Structure
Ensure your project has the standard architecture directory:
```text
/architecture/
/adr/
0001-record-template.md
0002-first-decision.md
...
```
If the directory doesn't exist, create it before adding ADRs.
## User-Facing Interface
When invoked directly by the user, this skill creates a new ADR.
### Execution Workflow
1. **Determine next ADR number** by scanning existing ADRs in `/architecture/adr/` (sequential: 0001, 0002, etc.)
2. **Create the ADR file** using the standard template with sequential numbering, initial status "Proposed", current date (UTC), and title from arguments
3. **Report the created file path** so the user can complete the Context, Decision, and Consequences sections
### Example Usage
```text
/ea:adr-management Use PostgreSQL for persistence
/ea:adr-management Adopt microservices architecture
```
## Version History
- **v1.0.0** (2025-12-05): Initial release
- ADR creation and management workflow
- Status lifecycle documentation
- Integration with architecture principles
- Template reference and best practices
---
## Last Updated
**Date:** 2025-12-05
**Model:** claude-opus-4-5-20251101
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