Thursday, April 2, 2026
Daily picks
28
articles scored
#1 GOLDReleaseClaude Code Releases (GitHub)
v2.1.90
- Claude Code v2.1.90 ships `/powerup` — an interactive, animated tutorial system that teaches you Claude Code features in-context; great onboarding shortcut if you've been skipping the docs
- The long-running `--resume` cache bug is fixed: since v2.1.69, resuming a session with MCP servers, deferred tools, or custom agents triggered a full prompt-cache miss on the first request, quietly burning up to 11.5× more tokens than expected every single time
- Auto mode now correctly honors explicit user boundaries ('don't push', 'wait for X before Y') — before this fix those instructions were silently ignored even when the action was otherwise allowed
- Three quadratic-time performance regressions fixed in one release: SSE transport large-frame handling, SDK session transcript writes, and per-turn MCP tool schema lookups are all now linear
- PowerShell security hardened: four distinct bypass techniques (background job `&`, `-ErrorAction Break` debugger hang, archive-extraction TOCTOU, parse-fail deny-rule degradation) were all patched simultaneously
#2 SILVERReleaseGitHub anthropics/anthropic-sdk-python & anthropic-sdk-typescript
anthropic-sdk-python v0.88.0 / anthropic-sdk-typescript v0.82.0
- Both the Python and TypeScript SDKs now return `structured stop_details` on message responses — instead of inferring why a generation stopped, you get a typed object telling you exactly whether it was `tool_use`, `end_turn`, `max_tokens`, or another reason
- Bedrock now supports API key authentication in both SDKs, removing the AWS credential ceremony for teams that want simpler Bedrock access
- A new `aws-sdk` package lands in the TypeScript SDK (v0.2.0) for first-class AWS-native integration
#3 BRONZEGuideReddit r/ClaudeAI
I investigated Claude Code's --resume cache bug. Here's what was actually happening
- A developer traced the v2.1.69–v2.1.90 `--resume` regression to its root cause: session state was silently dropping `deferred_tools_delta` and `mcp_instructions_delta` records on save, so resume reconstructed a different cache key and triggered a full miss every time
- Real cost numbers: ~11.5× higher token spend on the first resumed request; one heavy MCP user estimated 12.6M extra tokens burned and ~$43.56 in wasted API value over 27 days — with a broader community midpoint around $285K