Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.91 Home All releases olderv2.1.90 v2.1.92newer
Claude Code v2.1.91

Ultraplan Cloud Planning UI [Gradual Rollout]

Feature flag
tengu_ultraplan_config Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.91: no gate table built for this version

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.91. It isn't a statement about your account. What a flag value here can and cannot tell you

What

The Ultraplan feature — which launches a planning session in Claude Code on the web — now has a fully functional interactive UI in the CLI.

Status

Feature-flagged via tengu_ultraplan_config (must have enabled: true)

Details
  • Typing "ultraplan" in a prompt triggers keyword detection and launches the /ultraplan flow
  • "Run ultraplan in the cloud?" dialog with time estimates and option to disable Remote Control
  • Plan approval UI with three choices: "Implement here" (inject into current conversation), "Start new session" (clear and start fresh with the plan), or "Cancel" (save plan to file)
  • Scrollable plan preview with ctrl+u/ctrl+d to scroll
  • If Remote Control is active, launching ultraplan disables it with a warning
  • Rejected plans are saved to {session}-ultraplan.md
Evidence

Ultraplan config and UI (gated by tengu_ultraplan_config, search for "Run ultraplan in the cloud?" and "Ultraplan approved")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.91 →