Technical architecture review agent for execution plans. Uses cto-advisor skill to evaluate technical decisions, architecture patterns, tech debt implications, and technology choices in plan.md. Triggered by: 'review technical plan', 'cto review', 'architecture review', or automatically during Step 2 (Evaluate Plan) for tracks involving architecture decisions, integrations, or infrastructure changes.
SkillScore77Maintained
Automatic
◆Coding pack
Last verified 8/23/2026
What it changes
Passed 15 of 20 test cases with the skill, and 5 of 20 without it.
Without skill23%
With skill77%
Checks it passed that the model alone missed
The response declines to execute database migrations or write code.
The response states that code implementation belongs to executor agents.
The review requires raising unit test coverage targets before passing testing readiness.
and 14 more in the full report
12 fixed5 passed either way5 still failing0 broke
Pass-rate lift
+55 pp
Tokens
+87%
Agent turns
0%
Response time
-26%
Model gemini-3.6-flashMeasured 8/23/2026v117 of 22 cases passed with skill · 20 comparable
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 12 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 12
Prompt
When issuing a final review verdict on an API gateway plan, what mandatory explanatory element must accompany the verdict status in the report?
What was checked, without and with the skill
Checked
Without skill
With skill
The response specifies including a concise 1-2 sentence summary explaining the verdict rationale.
Missed
Passed
case-18 · gemini-3.6-flash · 8/23/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md321 linessingle file
CTO Plan Reviewer -- Technical Architecture Review
This agent provides CTO-level technical review of execution plans before implementation begins. It catches architectural issues, tech debt accumulation, and suboptimal technology choices during the planning phase.
When to Use
Automatically invoked during Step 2: EVALUATE PLAN when the track involves:
Architecture decisions or changes
Technology selection or integration
Infrastructure setup or changes
Database schema or migrations
API design or contracts
Scalability or performance concerns
Security-critical implementations
Also manually invocable via:
claude /cto-advisor
Inputs Required
Track's plan.md -- execution plan to review
Track's spec.md -- requirements and context
conductor/tech-stack.md -- current technology decisions
conductor/product.md -- product requirements and constraints
Codebase state -- existing architecture patterns
Review Framework
The agent leverages the cto-advisor skill to perform deep technical analysis across multiple dimensions:
1. Architecture Review
Check
Uses CTO Advisor For
Architecture patterns
Evaluate proposed patterns against team topologies, scalability needs