Two new Claude Code capabilities shipped in the April sprint that have received almost no coverage despite being significant workflow expansions: Ultraplan, a cloud-hosted agentic planning workflow, and Ultrareview, a deep multi-pass code review command. Together they represent Claude Code’s first serious steps toward being an agentic planning tool, not just an interactive coding assistant.
Ultraplan: Cloud-Hosted Agentic Planning
Ultraplan is currently in early preview. The workflow is three steps:
- Draft in the CLI — from your terminal, describe the task or project you want Claude Code to plan. Ultraplan generates a structured execution plan: steps, dependencies, tool calls, expected outputs, error-handling branches.
- Review in the browser — the plan is pushed to a cloud-hosted web editor where you can read it in a structured interface, add comments, modify steps, flag concerns, and approve or reject sections. This is the human-in-the-loop gate that makes agentic execution trustworthy.
- Run remotely or pull back local — once approved, the plan can execute in Anthropic’s cloud infrastructure (no local machine required, runs while your laptop is off) or be pulled back to execute locally with full observability in your terminal.
The remote execution capability is the most significant aspect. This is Claude Code’s first “runs while your laptop is closed” feature — distinct from Cowork Routines (which are consumer-facing) and designed specifically for developer workflows. A migration plan, a batch refactoring job, a test suite generation task, or a dependency upgrade across a large codebase can be approved, handed to cloud execution, and completed overnight without a machine staying on.
When to Use Ultraplan
Ultraplan is designed for tasks where you want to review the approach before committing to execution — not for quick, single-step tasks. The review step adds 5–15 minutes to the workflow. That is worth it when:
- The task spans multiple files, services, or systems where a wrong step has cascading effects
- You are working in a production codebase where mistakes have real consequences
- The task will take more than 30 minutes to execute and you want human review before investing that time
- You are using remote execution and cannot monitor progress in real time
- You are delegating the task to a junior developer or teammate who will execute the plan
For quick tasks — generate a function, fix a specific bug, explain this code — use standard Claude Code. Ultraplan’s value scales with task complexity and execution risk.
Ultrareview: Deep Multi-Pass Code Review
The claude ultrareview subcommand applies multiple sequential review passes to code, each with a different evaluation focus:
- Security review — injection vulnerabilities, authentication gaps, trust boundary violations, insecure dependencies, secrets exposure
- Performance review — algorithmic complexity, unnecessary allocations, database query patterns, caching opportunities, concurrency issues
- Maintainability review — naming clarity, function size and cohesion, documentation gaps, test coverage, coupling and cohesion
Each pass generates findings, and Ultrareview synthesizes them into a prioritized report with severity ratings and specific remediation recommendations. The output is designed to go directly into a pull request review comment or a team review document.
Ultrareview vs. Standard Review
Standard claude review applies a single review pass optimized for breadth — it catches obvious issues quickly across all dimensions. Ultrareview applies specialized depth in each dimension sequentially. The trade-off is token cost and time: Ultrareview consumes 3–5× more tokens than standard review and takes proportionally longer.
The recommended workflow: use standard review on every pull request as part of your CI pipeline. Reserve Ultrareview for high-stakes merges — releases, security-sensitive features, architecture changes, any code that will touch production payment or authentication flows.
Both features are available now to Claude Code users on Pro and above. Ultraplan is in early preview — activate it via claude ultraplan --enable-preview. Ultrareview is generally available — run claude ultrareview [file or directory] from any Claude Code session.









