Every build, month by month
Every published build with a read, grouped by the month npm dated it. One row each: what came out, how much of it there was, and whether Anthropic ever wrote it up themselves.
16 entries, 4 of them switched off
This build carries six pieces of a system for letting a session receive events pushed in from outside, none of them switched on. A new Poll tool drains queued harness events and…
200 entries, 32 of them switched off
Thirty-nine entries are in this build but not switched on. A startup tip pointing at a /design command for UI mockups needs both an account entitlement and a feature flag that…
135 entries, 22 of them switched off
This build carries 22 entries that are present but unreachable, 12 of them detailed here. A "storage v5" backend picks up four more subsystems even though its backend factory…
332 entries, 45 of them switched off
A large amount of unfinished work sits in this build without a way to reach it, 50 entries in all. Groundwork for a Slack tagging integration is wired through session state…
180 entries, 27 of them switched off
Thirty-nine entries sit in this build without being switched on. Todo tools are now decided per model, and for opus 4/8, sonnet 5, fable 5 and mythos 5 they are off unless you set…
405 entries, 43 of them switched off
Sixty-eight entries in this build are present but not switched on, most of them clustered around cross-session messaging. @-mentioning another Claude session, the @-mention…
2 entries, 0 of them switched off
205 entries, 31 of them switched off
Thirty-nine entries are present but not switched on. A large /design skill drafts multi-artboard canvases published as an editable Artifact, but it needs the…
245 entries, 29 of them switched off
Thirty-nine entries are in this build without being reachable. A diff panel lives inside the REPL, with a file list, a noise filter and an "Ask about selection" action, and…
358 entries, 51 of them switched off
A large amount of cloud-session machinery landed switched off. A device_bash tool would let a session running in the cloud execute shell commands on your machine inside its OS…
1 entry, 0 of them switched off
Claude Code v2.1.226 is a maintenance release. The only change in this build is the version bump itself, from 2.1.225 to 2.1.226. There are no new features, bug fixes, or behavior…
155 entries, 18 of them switched off
A device bridge that registers this machine with claude.ai over WebSocket, exposing an MCP server for remote tools, is present but stays off unless the remote gate turns on, and…
352 entries, 48 of them switched off
A large amount of unreachable groundwork sits in this build, 59 entries in all. Cross-session messaging is the bulk of it: a ListAgents tool (alias ListPeers), a startup inbox…
201 entries, 24 of them switched off
Thirty-two entries in this build are present but not switched on. Two read-only tools, memory_list and memory_read, would let Claude browse documents in connected org and project…
121 entries, 13 of them switched off
Fourteen features sit in this build without being switched on. A predicate that would let destructive MCP tools run under remote auto mode is present but disabled, still routing…
308 entries, 49 of them switched off
A large amount of artifact comment machinery sits in this build without a way to reach it: the artifact tool has new comments and reply actions, a subsystem that reads and…
9 entries, 1 of them switched off
A retry path that would drop the classifier beta after an HTTP 400 and a successful bare retry is present in the build but inert: it keys off a beta constant that is null in both…
166 entries, 35 of them switched off
Thirty-nine entries in this build are present but not switched on. Plan mode can carry an interactive workshop page whose choices feed back into the session through a…
21 entries, 0 of them switched off
Version 2.1.218 is a large infrastructure and capability release. The most visible addition is a new whiteboard bundled skill that lets users sketch freehand architecture…
27 entries, 0 of them switched off
This release introduces MCP tool errors that now throw typed exceptions in workflow scripts (a behavioral change to be aware of), a new emoji shortcode typeahead feature with a…
15 entries, 0 of them switched off
Version 2.1.216 introduces the /workshop skill for running interactive decision workshops through published artifacts, adds JWT-aware credential masking for sandbox…
10 entries, 0 of them switched off
This release introduces a new subagent delegation steering system that lets operators control how aggressively Claude suggests or uses subagents, controlled by the…
1 entry, 0 of them switched off
This is a small internal patch release. The only functional change is a memory allocator tuning fix applied to bash subprocesses running under sandbox mode. No new user-facing…
22 entries, 0 of them switched off
This release introduces two major new capabilities: native support for Claude Platform on Google Cloud as a first-class provider, and a /import command that migrates…
27 entries, 0 of them switched off
This release introduces a major feedback system where Claude can draft bug reports and feature requests for user review, adds a /fork command to split a conversation into a…
14 entries, 0 of them switched off
This release adds a new RefreshMcpTools built-in tool for re-syncing MCP server tool lists, a --forward-subagent-text CLI flag for streaming subagent output in print mode, and…
15 entries, 0 of them switched off
This is a large architectural release. The memory sync backend has been completely replaced — old personal and team sync is gone, replaced by an org memory discovery system that…
7 entries, 0 of them switched off
This release introduces runtime capabilities for published Artifacts, allowing pages to call the user's claude.ai MCP connectors live from within a published Artifact. It also…
20 entries, 0 of them switched off
Version 2.1.208 introduces Vim INSERT-mode key remaps, a new CLAUDE_CODE_PROCESS_WRAPPER environment variable for wrapping Claude Code process launches, shell history context…
24 entries, 0 of them switched off
Version 2.1.207 upgrades the default model to Claude Opus 4.8 (claude-opus-4-8), introduces a Morning Brief skill for cowork sessions, and significantly hardens security around…
18 entries, 0 of them switched off
This release delivers a significantly revamped Claude in Chrome setup experience with an interactive wizard and multi-browser detection, introduces a new EndConversation tool…
18 entries, 0 of them switched off
This release delivers a major overhaul of the /doctor command — transformed from a passive diagnostics display into a comprehensive 8-check setup repair tool — along with a new…
1 entry, 0 of them switched off
This is a same-day patch release (built ~22 hours after 2.1.203) containing a single behavioral fix for the --output-format stream-json mode when combined with --verbose…
24 entries, 0 of them switched off
This release tightens break reminder defaults to 30-minute intervals (down from 2 hours), improves proxy URL validation with actionable error messages, and adds detailed…
15 entries, 0 of them switched off
This release adds audio file transcription via @-mention, a new "Dynamic workflow size" setting in /config, and an explicit stop: true mechanism for ending /loop sessions…
2 entries, 0 of them switched off
Version 2.1.201 is a same-day hotfix release built approximately 16 hours after 2.1.200 (build timestamp advances from 03:43 UTC to 19:53 UTC on 2026-07-03). The only substantive…
21 entries, 0 of them switched off
Version 2.1.200 ships full infrastructure for background observer agents — a new experimental capability where a second agent silently watches a main agent's activity and can send…
20 entries, 0 of them switched off
Version 2.1.199 introduces a major integration with Claude Design (claude.ai/design) for collaborative design work, a full suite of plugin/skill/connector discovery tools for the…
26 entries, 0 of them switched off
This release removes the /agents interactive wizard and the speculation engine, raises the Node.js minimum to 22, and ships an early-access claude plugin eval command for…
6 entries, 0 of them switched off
This release introduces Claude Sonnet 5 (claude-sonnet-5) as the new default Sonnet model for Claude Code, replacing Claude Sonnet 4.6. The model picker gains a promotional…
21 entries, 0 of them switched off
This release delivers a substantial refactoring of the model catalog (moving from hardcoded constants to a data-driven catalog with alias support), introduces a new…
16 entries, 0 of them switched off
This release is headlined by an interactive cloud gateway login flow with full OAuth device-code authentication and TLS certificate pinning, and a new WebSocket source mode for…
19 entries, 0 of them switched off
Version 2.1.193 is a security and reliability-focused release. Key highlights include a new disableSideloadFlags enterprise setting that closes CLI-flag bypasses of marketplace…
21 entries, 0 of them switched off
This release introduces an AI-powered contextual tips system that surfaces relevant feature suggestions mid-session based on what you are doing, a team discovery feature that…
7 entries, 0 of them switched off
This release introduces a new "Fable 5 included" rate limit tier that tracks weekly Fable 5 usage separately from the main weekly limit, with tailored messaging when that included…
24 entries, 0 of them switched off
This release renames the /toggle-memory command to /pause-memory, introduces a --bg/--background CLI flag for launching background agent sessions, and adds…
19 entries, 0 of them switched off
This release adds mcp login and mcp logout subcommands for managing OAuth credentials for MCP servers (with a --no-browser flag for SSH sessions), introduces the…
3 entries, 0 of them switched off
This is a small patch release with two user-facing messaging improvements for slow or stalled API connections, a thinking-budget UI change that restricts an advanced display to…
2 entries, 0 of them switched off
This release removes the /migrate command and claude migrate CLI that imported configurations from OpenAI Codex and Google Gemini CLI. In its place, the /init command…
21 entries, 0 of them switched off
Version 2.1.182 introduces /migrate, a new command for importing configuration from OpenAI Codex and Google Gemini CLI into Claude Code — covering MCP servers, slash commands…
18 entries, 0 of them switched off
This release ships accessibility screen-reader mode (new --ax-screen-reader flag and axScreenReader setting), a new /design command for Claude Design integration, and the…
23 entries, 0 of them switched off
This release adds Claude Design MCP integration, a HIPAA compliance indicator, and a "not used recently" section in the model picker. It also brings multiple reliability…
21 entries, 0 of them switched off
This release replaces the explicit TeamCreate/TeamDelete tools with a simpler named-agent model, introduces a standalone /design-login command for design-system access…
3 entries, 0 of them switched off
This is a small patch release focused on internal infrastructure. The main addition is a new model error override system that allows server-side customization of error messages…
14 entries, 0 of them switched off
This release introduces footer link badges — a new way to configure regex patterns that turn output into clickable links in the REPL footer. It also significantly expands project…
9 entries, 0 of them switched off
This release introduces a comprehensive model allowlist enforcement system for organizations, allowing admins to restrict which Claude models users and agents can access. Users…
19 entries, 0 of them switched off
Version 2.1.174 introduces the Projects Tool, a major new capability that lets Claude Code read and write claude.ai Project documents directly from a session. The release also…
3 entries, 0 of them switched off
This release improves the clarity of safety-refusal messages by making them context-aware: requests blocked for cybersecurity or biology topics continue to name those topics…
22 entries, 0 of them switched off
Version 2.1.172 ships the Artifact tool — a new capability letting Claude publish HTML and Markdown files to private claude.ai web pages — alongside improved ultra (cloud review)…
15 entries, 0 of them switched off
This release introduces Claude Fable 5, a new highest-tier model for the hardest and longest-running tasks, replacing the previous Opus 4.8 launch announcement with a Fable 5…
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