Official news, first rumor reports and substantive progress. Each entry keeps the information published at that time.
- Cat Wu says Friday was her last day as Claude Code product lead at Anthropic
Cat Wu posted on X that Friday was her last day at Anthropic. Business Insider reports Anthropic confirmed the exit of the Claude Code / Cowork product lead; a destination was not announced.
- Claude Team and Enterprise plugins can auto-connect for teammates
Boris Cherny (Anthropic) said Team and Enterprise admins can set up company plugins so teammates auto-connect the first time they use the plugins, without signing in one by one.
- Claude Managed Agents can now use dynamic workflows, in beta
Anthropic's Claude Platform release notes say a Claude Managed Agents agent can now use dynamic workflows, in beta with the managed-agents-2026-04-01 beta header. For work with many pieces, such as reviewing hundreds of documents, the agent can write a workflow, a program that runs many agents in phases and combines their results, which the server runs in the background as a workflow run. It is turned on by setting the agent's multiagent field, and runs are followed through workflow_run.* events on the session event stream.
- Claude's Python and TypeScript SDKs add classes for running browser and computer use on your own automation
Claude Platform docs describe new SDK toolset classes for the browser use and computer use tools: developers subclass one and write a method per action, such as navigate or left_click, against their own browser or desktop automation, while the SDK routes each call and applies the policies they pass.
- Claude Code adds mods: small TypeScript files that change behavior and UI
Claude Code introduced mods — small TypeScript files that modify behavior and interface, distributed via plugins and installed with /plugin. Official examples include Blast Radius, which intercepts dangerous commands, and Replay Theater, which replays diffs. Mods run under the same permissions as Claude Code itself.
- Anthropic details Agent Skills for real-world agent deployments
Anthropic published 'Equipping agents for the real world with agent skills' on its site, covering skills for agent deployments.
- Claude Code adds an Analytics API
Anthropic published documentation for a Claude Code Analytics API on its platform docs, per the new docs page.
- Anthropic's claude-api skill for Claude Code adds an auto-tuning workflow
Anthropic's official claude-api skill for Claude Code gained an automatic tuning workflow, per the skill's update.
- Claude can now help build evaluations and hillclimb on them
Anthropic's Claude Devs account announced Claude can now help developers build evaluations and hillclimb on them.
- Claude Code 2.1.284 makes Sonnet 5.5 the default model
Claude Code v2.1.284 adds Claude Sonnet 5.5 (claude-sonnet-5-5) as the default Sonnet model on the Anthropic API, per the GitHub release notes. The release notes list 1M context for the model at $2/$10 per million tokens with $0.20 per million cache reads.
- Claude Sonnet 5.5 one-shots a 3D zombie FPS in 49 minutes for $1
A Reddit post shows Claude Sonnet 5.5 one-shot an entire 3D zombie FPS game in 49 minutes at a cost of $1.
- Epic Games' Unreal Engine skills plugin lets Claude Code control Unreal Editor over MCP
Epic Games' Unreal Engine Skills for Claude Code plugin, listed in Anthropic's official Claude Code plugin marketplace, connects Claude Code to Unreal Editor through the Model Context Protocol. It exposes hundreds of tools across more than 30 toolsets, including actors, Blueprints, materials, Niagara, Control Rigs, Sequencer, State Trees, widgets, the Gameplay Ability System and automation testing, and adds an unreal-mcp skill plus a session hook that tells Claude it is in an Unreal project. It requires Unreal Editor running with the ModelContextProtocol and AllToolsets plugins enabled and the MCP server started. The plugin repo has been public since June and was last updated on Sep 17.