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April 7, 2026

Claude Code v2.1.94: 60% Faster Writes + 500K MCP

Update Claude Code to v2.1.94 for plugin executables, 500K MCP result overrides, Bedrock via Mantle, cross-worktree --resume, per-model /cost breakdowns, and 60% faster Write tool diffs.

Plugin and MCP Expansions Boost Extensibility

Plugins now ship executables in bin/ folders for direct command invocation without wrappers—declare skills with "skills": ["./"] to use the skill's YAML frontmatter name. YAML-defined plugin skill hooks fire reliably. MCP tools gain per-call result persistence overrides via _meta["anthropic/maxResultSizeChars"] up to 500,000 characters; set disableSkillShellExecution to block inline shell calls; Slack send-message shows compact #channel headers with clickable links. These let you scale agent outputs and secure executions without full reconfiguration.

Integrations and Defaults Enhance Provider Flexibility

Amazon Bedrock runs via Mantle with CLAUDE_CODE_USE_MANTLE=1, including an interactive AWS setup wizard. Default effort level rises from medium to high for API-key, Bedrock, Vertex, Foundry, Team, and Enterprise users, delivering more reasoning out-of-box; Sonnet 3.5 v2 invocation fixed. claude-cli://open handles multi-line prompts; plan mode survives container restarts; remote sessions prefix names with hostname. /cost now breaks down usage per model and cache hits for subscribers; /release-notes picks interactively; /tag and /vim removed. Run claude update to access.

Resume, Performance, and Reliability Fixes Accelerate Workflows

--resume works across git worktrees without manual navigation—transcript chain breaks fixed; userPromptSubmit hooks set session titles via output. Write tool diff computation speeds up 60% on large files; agents resume after 429 rate-limits; subagents persist through tmux switches; prompt-type stop hooks succeed. Terminal keybinds (Cmd+Delete, Ctrl+E) restored; CJK/multi-byte stream-json corruption fixed; cursor tracking, rendering bugs squashed. Security adds forceRemoteSettingsRefresh fail-closed policy and macOS keychain console login fixes. Across v2.1.91–2.1.94: 5 features, 20 bug fixes, 6 improvements deliver production-ready gains for agentic coding.

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Claude Code v2.1.91 to v2.1.94 ships around 5 new features, 20 bug fixes, and 6 improvements — including plugin bin/ executables, 500K MCP result size override, Amazon Bedrock on Mantle, cross-worktree --resume, /cost per-model breakdown, and a 60% faster Write tool. Full breakdown of every change across three back-to-back releases. ---- 🚀 Want to learn agentic coding with live daily events and workshops? Check out Dynamous AI: https://dynamous.ai/?code=646a60 Get 10% off here 👉 https://shorturl.smartcode.diy/dynamous_ai_10_percent_discount ---- Chapters 0:00 Plugin bin/ Executables, Skill Frontmatter Names, YAML Hooks Fire (Plugin Ecosystem) 0:25 MCP anthropic/maxResultSizeChars 500K + disableSkillShellExecution + Slack Channel Header 0:48 Amazon Bedrock on Mantle, Effort Level → High, Sonnet 3.5 v2 Invocation Fix 1:18 claude-cli://open Multi-Line Prompts, Plan Mode Container Restart, Hostname Prefixes 1:35 --resume Cross-Worktree Sessions, Transcript Chain Fix, UserPromptSubmit sessionTitle Hook 1:54 /cost Per-Model Breakdown, /release-notes Picker, /tag and /vim Removed 2:12 Write Tool 60% Faster, 429 Rate-Limit Agents Fix, Subagent tmux, Stop Hooks 2:31 Terminal Keybinds Restored, CJK stream-json Corruption Fix, Cursor Tracking 2:51 forceRemoteSettingsRefresh Fail-Closed Policy, macOS Keychain Console Login 3:10 claude update — Subscribe & Comment Key Changes in These Releases: - Plugin ecosystem: Plugins can now ship executables under `bin/` for bare-command invocation, plugin skills declared with `"skills": ["./"]` use the skill's own frontmatter `name`, and plugin skill hooks defined in YAML frontmatter finally fire correctly - MCP power-ups: Override tool result persistence per call via `_meta["anthropic/maxResultSizeChars"]` up to 500K characters, lock down inline shell execution with `disableSkillShellExecution`, and get a compact `Slacked #channel` header with clickable link on Slack MCP send-message - Bedrock leveled up: Run Claude Code on Amazon Bedrock through Mantle with `CLAUDE_CODE_USE_MANTLE=1`, default effort level jumped from medium to high for API-key/Bedrock/Vertex/Foundry/Team/Enterprise users, plus an interactive AWS setup wizard and a Sonnet 3.5 v2 invocation fix - --resume across worktrees: The transcript chain break on `--resume` is gone, and resume now jumps into sessions from other git worktrees directly with no manual navigation - Performance wins: Write tool diff computation is around 60% faster, agents no longer appear stuck after 429 rate-limit responses, subagent spawning survives tmux window changes, and prompt-type Stop hooks no longer fail incorrectly Release Notes (v2.1.91): https://github.com/anthropics/claude-code/releases/tag/v2.1.91 Release Notes (v2.1.92): https://github.com/anthropics/claude-code/releases/tag/v2.1.92 Release Notes (v2.1.94): https://github.com/anthropics/claude-code/releases/tag/v2.1.94 Claude Code on GitHub: https://github.com/anthropics/claude-code Update now: claude update Which of these fixes were you waiting for the most — the 500K MCP result size, cross-worktree --resume, or the 60% faster Write tool? Drop your pick in the comments. #ClaudeCode #Anthropic #ClaudeCodev2 #AICoding #DevTools #AgenticCoding #MCPServers #AmazonBedrock #AWS #Plugins #CLI #TerminalTools #AIAgents #PairProgramming #DeveloperExperience #DevOps #OpenSource #AIAssistant #CodeGeneration #SoftwareEngineering #Programming #DevCommunity