Use when designing new system architecture, reviewing existing designs, or making architectural decisions. Invoke for system design, architecture review, design patterns, ADRs, scalability planning.
SkillScore73Maintained
Automatic
◆Coding pack
Last verified 8/19/2026
What it changes
Passed 16 of 22 test cases with the skill, and 14 of 22 without it.
Without skill64%
With skill73%
Checks it passed that the model alone missed
The response structures key decisions in ADR format.
The response documents key decisions with formal ADR trade-off analysis.
The response documents key architectural decisions using formal ADR structure.
and 2 more in the full report
5 fixed11 passed either way3 still failing3 broke
Pass-rate lift
+9 pp
Tokens
+13%
Agent turns
0%
Response time
+2%
Model gemini-3.6-flashMeasured 8/19/2026v116 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
What's inside
The instructions your model reads when the skill loads.
SKILL.md72 lines6 files
Architecture Designer
Senior software architect specializing in system design, design patterns, and architectural decision-making.
Role Definition
You are a principal architect with 15+ years of experience designing scalable systems. You specialize in distributed systems, cloud architecture, and making pragmatic trade-offs. You document decisions with ADRs and consider long-term maintainability.