Claude docs changes for April 24th, 2026 [diff]

Executive Summary

• Memory Stores API launched: A new set of beta API endpoints for managing persistent memory stores, individual memories, and memory versions — enabling agents to maintain state across sessions
• Sessions now support memory store resources: Agent sessions can attach memory stores with read/write or read-only access, with per-attachment instructions rendered into the system prompt
• Claude Code 2.1.119: Major release with 30+ improvements including /config settings now persisting to disk, multi-git-host PR support, and PostToolUse hooks gaining execution timing data
• New Claude Code Enterprise setup guide: A comprehensive admin-setup.md document walks organization admins through API provider selection, policy delivery, enforcement controls, usage visibility, and data handling

New Claude Code versions

2.1.119

New features

• /config settings (theme, editor mode, verbose, etc.) now persist to ~/.claude/settings.json and participate in the project/local/policy override precedence chain
• Added prUrlTemplate setting to point the footer PR badge at a custom code-review URL instead of github.com
• Added CLAUDE_CODE_HIDE_CWD environment variable to hide the working directory in the startup logo
• --from-pr now accepts GitLab merge-request, Bitbucket pull-request, and GitHub Enterprise PR URLs
• --print mode now honors the agent's tools: and disallowedTools: frontmatter, matching interactive-mode behavior
• --agent <name> now honors the agent definition's permissionMode for built-in agents
• PowerShell tool commands can now be auto-approved in permission mode, matching Bash behavior
• Hooks: PostToolUse and PostToolUseFailure hook inputs now include duration_ms (tool execution time)
• owner/repo#N shorthand links in output now use your git remote's host instead of always pointing at github.com
• Status line stdin JSON now includes effort.level and thinking.enabled
• OpenTelemetry: tool_result and tool_decision events now include tool_use_id; tool_result also includes tool_input_size_bytes

Existing feature improvements

• Subagent and SDK MCP server reconfiguration now connects servers in parallel instead of serially
• Plugins pinned by another plugin's version constraint now auto-update to the highest satisfying git tag
• Vim mode: Esc in INSERT no longer pulls a queued message back into the input
• Slash command suggestions now highlight the characters that matched your query
• Slash command picker now wraps long descriptions onto a second line instead of truncating
• Security: blockedMarketplaces now correctly enforces hostPattern and pathPattern entries
• Tool search is now disabled by default on Vertex AI to avoid an unsupported beta header error (opt in with ENABLE_TOOL_SEARCH)

Major bug fixes

• Fixed pasting CRLF content (Windows clipboards, Xcode console) inserting an extra blank line between every line
• Fixed multi-line paste losing newlines in terminals using kitty keyboard protocol sequences inside bracketed paste
• Fixed Glob and Grep tools disappearing on native macOS/Linux builds when the Bash tool is denied via permissions
• Fixed scrolling up in fullscreen mode snapping back to the bottom every time a tool finishes
• Fixed MCP HTTP connections failing with "Invalid OAuth error response" when servers returned non-JSON bodies for OAuth discovery requests
• Fixed auto mode overriding plan mode with conflicting "Execute immediately" instructions
• Fixed async PostToolUse hooks that emit no response payload writing empty entries to the session transcript
• Fixed ${ENV_VAR} placeholders in headers for HTTP/SSE/WebSocket MCP servers not being substituted before requests
• Fixed MCP OAuth client secret stored via --client-secret not being sent during token exchange for servers requiring client_secret_post
• Fixed verbose output setting not persisting after restart
• Fixed Agent tool with isolation: "worktree" reusing stale worktrees from prior sessions
• Fixed PR not linked to session when working in a git worktree
• Fixed /plan and /plan open not acting on the existing plan when entering plan mode
• Fixed skills invoked before auto-compaction being re-executed against the next user message
• Fixed TaskList returning tasks in arbitrary filesystem order instead of sorted by ID
• Fixed SDK/bridge read_file not correctly enforcing size cap on growing files
• Windows: removed false-positive "Windows requires 'cmd /c' wrapper" MCP config warning
• [VSCode] Fixed voice dictation's first recording producing nothing on macOS while the microphone permission prompt is showing

Claude Code changes

New Documents

admin-setup [Source]

New comprehensive guide for deploying Claude Code across an organization. Covers API provider selection (Teams/Enterprise, Console, Bedrock, Vertex AI, Foundry), the four mechanisms for delivering managed policy to developer machines (server-managed, plist/registry, file-based, Windows user registry), enforcement controls (permission rules, sandboxing, MCP/plugin restrictions, hooks, version floor), usage visibility setup, and data handling review. Includes a verification step using /status to confirm active enterprise settings.

API changes

New Documents

Memory Stores [Source]

New beta API section introducing Memory Stores — persistent, named stores of key-value memories that can be attached to agent sessions. Documents full CRUD endpoints for memory stores (/v1/memory_stores), individual memories within a store (/v1/memory_stores/{id}/memories), and memory versions (/v1/memory_stores/{id}/memory_versions). Memory versions support a redact operation. Available across all SDK languages (cURL, Python, TypeScript, Go, Java, Ruby, C#).

Changed documents

agent-skills/quickstart [Source]

• Simplified the file download API call: the explicit betas=["files-api-2025-04-14"] parameter was removed from client.beta.files.download(). [line 102] [Source]

api/beta [Source]

• Removed the user-profiles-2026-03-24 beta flag from the AnthropicBeta union type. [line 62] [Source]
• Removed the xhigh effort level from the BetaEffortCapability model, reducing it from 3 extra fields to 2. [line 290] [Source]

api/beta/agents/create [Source]

• Removed the user-profiles-2026-03-24 beta flag from the accepted AnthropicBeta values. [line 68] [Source]

api/beta/messages/create [Source]

• Removed the user-profiles-2026-03-24 beta flag from accepted beta values. [line 72] [Source]
• Removed xhigh from the effort field in output_config; valid effort levels are now low, medium, high, and max. [line 2849] [Source]
• Removed task_budget from output_config; the BetaOutputConfig object no longer accepts a token budget parameter. [line 2833] [Source]
• Removed encrypted_content from BetaCompactionBlock and BetaCompactionBlockParam; the opaque round-trip metadata field is no longer part of the compaction API. [line 2497] [Source]
• Removed user_profile_id request parameter. [line 4757] [Source]

api/beta/sessions [Source]

• Added BetaManagedAgentsMemoryStoreResourceParam as a new resource type for session creation, allowing memory stores to be attached with read_write or read_only access and optional per-attachment instructions. [line 136] [Source]
• BetaManagedAgentsSessionResource union type now includes BetaManagedAgentsMemoryStoreResource alongside GitHub repository and file resources. [line 6206] [Source]

api/beta/sessions/create [Source]

• resources parameter now accepts BetaManagedAgentsMemoryStoreResourceParam in addition to GitHub repository and file resources. Includes memory_store_id, access (read_write/read_only), and optional instructions fields. [line 102] [Source]
• New BetaManagedAgentsMemoryStoreResource response model documented, including mount_path (filesystem path derived from store name), description, name, and instructions fields. [line 544] [Source]

api/beta/sessions/resources [Source]

• BetaManagedAgentsSessionResource union type now includes BetaManagedAgentsMemoryStoreResource as a third variant alongside GitHub repository and file resources. [line 92] [Source]