Anthropic previews Cloud implementation plans
Anthropic added a '/ultraplan' feature to Claude Code as a preview: it generates detailed cloud implementation plans for software development that can be edited in a web interface with diagrams and executed via a cloud PR or local CLI. The demo and preview posts show the feature aimed at turning design outlines into executable engineering plans. (x.com 1) (x.com 2)
Anthropic has started previewing a Claude Code feature called Ultraplan that moves software planning from the terminal into a browser-based cloud workflow. (code.claude.com) Anthropic’s documentation says Ultraplan starts from the Claude Code command line tool, drafts the plan in a web session, then lets users comment on sections, request revisions, and choose where to run the work. The company labels it a “research preview” and says it requires Claude Code version 2.1.91 or later. (code.claude.com) The same docs say the feature needs a Claude Code on the web account and a GitHub repository. After review, users can either run the approved plan on the web and open a pull request or send it back to the local command line interface for execution. (code.claude.com) In plain terms, the product is aimed at a common software bottleneck: turning a rough build request into a step-by-step implementation plan before code changes begin. Anthropic describes Claude Code itself as a system that can read a codebase, edit files, run tests, and deliver committed code. (anthropic.com) That puts Ultraplan in the middle of a broader shift in coding tools from autocomplete toward agents that plan and execute larger chunks of work. Anthropic introduced Claude Code publicly in February 2025 as a research preview for delegating substantial engineering tasks from the terminal. (anthropic.com) Anthropic’s Ultraplan page says the cloud handoff is meant to free the terminal while the plan is being drafted. The browser view adds a richer review surface than the terminal, including targeted comments on specific sections instead of one long back-and-forth. (code.claude.com) The company’s product page frames Claude Code as useful both for experienced developers and for “builders without an engineering background.” Ultraplan extends that pitch by separating planning, review, and execution into distinct steps that look closer to a design review than a chat session. (anthropic.com) (code.claude.com) Anthropic has not, in the public Ultraplan documentation reviewed here, published separate pricing for the feature or said when the preview will leave research status. For now, the release looks like a test of whether developers want cloud-generated plans they can edit and then turn directly into pull requests or local runs. (code.claude.com) (anthropic.com)
