An entry is only as true as the day it was written.
Flags move on the server after a release ships. Anthropic's own notes land days later and their documentation later still. Sometimes an entry turns out to be wrong and gets corrected by hand. All of that is recorded against the entry it happened to, and this is the whole of it in the order it happened.
Nothing here replaces an entry. Every line links to the page its release published, still saying what that release said, because a correction is added and dated rather than swapped in.
| When | Entry | What happened |
|---|---|---|
v2.1.246opus-5 |
Documentation arrivedA small documentation edit on Models overview touched a line naming opus-5 after this was published.
the line in the docs| [Claude Platform on AWS ID](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-1` | `claude-opus-5` | `claude-sonnet-5` | `claude-haiku-4-5` | |
|
v2.1.269claude-haiku-4-5 |
Documentation arrivedA small documentation edit on Models overview touched a line naming claude-haiku-4-5 after this was published.
the line in the docs| [Claude Platform on AWS ID](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-1` | `claude-opus-5` | `claude-sonnet-5` | `claude-haiku-4-5` | |
|
v2.1.257claude-haiku-4-5 |
Documentation arrivedA small documentation edit on Models overview touched a line naming claude-haiku-4-5 after this was published.
the line in the docs| [Claude Platform on AWS ID](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-1` | `claude-opus-5` | `claude-sonnet-5` | `claude-haiku-4-5` | |
|
v2.1.257claude-fable-5-1 |
Documentation arrivedA small documentation edit on Models overview touched a line naming claude-fable-5-1 after this was published.
the line in the docs| [Claude Platform on AWS ID](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-1` | `claude-opus-5` | `claude-sonnet-5` | `claude-haiku-4-5` | |
|
v2.1.257claude-fable-5-1 |
Documentation arrivedA small documentation edit on Models overview touched a line naming claude-fable-5-1 after this was published.
the line in the docs| [Claude Platform on AWS ID](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-1` | `claude-opus-5` | `claude-sonnet-5` | `claude-haiku-4-5` | |
|
v2.1.257claude-fable-5-1 |
Documentation arrivedA small documentation edit on Models overview touched a line naming claude-fable-5-1 after this was published.
the line in the docs| [Claude Platform on AWS ID](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-1` | `claude-opus-5` | `claude-sonnet-5` | `claude-haiku-4-5` | |
|
v2.1.257claude-sonnet-5 |
Documentation arrivedA small documentation edit on Models overview touched a line naming claude-sonnet-5 after this was published.
the line in the docs| [Claude Platform on AWS ID](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-1` | `claude-opus-5` | `claude-sonnet-5` | `claude-haiku-4-5` | |
|
v2.1.247claude-sonnet-5 |
Documentation arrivedA small documentation edit on Models overview touched a line naming claude-sonnet-5 after this was published.
the line in the docs| [Claude Platform on AWS ID](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws) | `claude-fable-5-1` | `claude-opus-5` | `claude-sonnet-5` | `claude-haiku-4-5` | |
|
v2.1.248/version |
Documentation arrivedA small documentation edit on get-started touched a line naming /version after this was published.
the line in the docs<version>2.63.0</version> |
|
v2.1.265onBlock |
Documentation arrivedAnthropic's documentation has since written up onBlock, on sent_count = len(messages sent in the compaction request).
the line in the docsuse Anthropic\Beta\Messages\BetaCompactionBlock; |
|
v2.1.265onBlock |
Documentation arrivedAnthropic's documentation has since written up onBlock, on sent_count = len(messages sent in the compaction request).
the line in the docsuse Anthropic\Beta\Messages\BetaCompactionBlock; |
|
v2.1.265Pane |
Documentation arrivedAnthropic's documentation has since written up Pane, on Compliance API.
the line in the docs- `OrgCoworkBrowserPaneDisabled object` |
|
v2.1.265Pane |
Documentation arrivedAnthropic's documentation has since written up Pane, on Compliance API.
the line in the docs- `OrgCoworkBrowserPaneDisabled object` |
|
v2.1.265Pane |
Documentation arrivedAnthropic's documentation has since written up Pane, on Compliance API.
the line in the docs- `OrgCoworkBrowserPaneDisabled object` |
|
v2.1.273audience |
Documentation arrivedAnthropic's documentation has since written up audience, on Compliance API.
the line in the docs- `audience: array of Organization or Users or AnyoneWithLink` |
|
v2.1.265str_replace |
Documentation arrivedAnthropic's documentation has since written up str_replace, on text-editor-tool.
the line in the docscase "str_replace": |
|
v2.1.268navigate |
Documentation arrivedA small documentation edit on browser-use-tool touched a line naming navigate after this was published.
the line in the docs4. In your `navigate` handler, accept the history keywords `"back"`, `"forward"`, and `"reload"`, treat a URL without a scheme as `https://`, then parse the URL and refuse any scheme other than `http` or `https` (`javascript:`, `file:`, `d… |
|
v2.1.265policyHelper |
Documentation arrivedA small documentation edit on Configure server-managed settings touched a line naming policyHelper after this was published.
the line in the docsWhen a [`policyHelper`](/docs/en/settings-reference#policyhelper) supplies managed settings, its output is the only source these checks read, apart from [`forceRemoteSettingsRefresh`](/docs/en/settings-reference#forceremotesettingsrefresh)… |
|
v2.1.265policyHelper |
Documentation arrivedA small documentation edit on Configure server-managed settings touched a line naming policyHelper after this was published.
the line in the docsWhen a [`policyHelper`](/docs/en/settings-reference#policyhelper) supplies managed settings, its output is the only source these checks read, apart from [`forceRemoteSettingsRefresh`](/docs/en/settings-reference#forceremotesettingsrefresh)… |
|
v2.1.257policyHelper |
Documentation arrivedA small documentation edit on Configure server-managed settings touched a line naming policyHelper after this was published.
the line in the docsWhen a [`policyHelper`](/docs/en/settings-reference#policyhelper) supplies managed settings, its output is the only source these checks read, apart from [`forceRemoteSettingsRefresh`](/docs/en/settings-reference#forceremotesettingsrefresh)… |
|
v2.1.273disableClaudeAiConnectors |
Documentation arrivedAnthropic's documentation has since written up disableClaudeAiConnectors, on Deploy managed settings.
the line in the docs* `deniedMcpServers` and [`disableClaudeAiConnectors`](/docs/en/settings-reference#disableclaudeaiconnectors): an entry or a `true` in any admin source applies. Requires Claude Code v2.1.273 or later |
|
v2.1.248MCP_CONNECTION_NONBLOCKING |
Documentation arrivedAnthropic's documentation has since written up MCP_CONNECTION_NONBLOCKING, on Environment variables.
the line in the docs| `MCP_CONNECTION_NONBLOCKING` | Controls whether startup waits for MCP servers to connect before the first query. MCP startup is non-blocking by default: servers connect in the background and their tools become available as they finish. S… |
|
v2.1.248MCP_CONNECTION_NONBLOCKING |
Documentation arrivedAnthropic's documentation has since written up MCP_CONNECTION_NONBLOCKING, on Environment variables.
the line in the docs| `MCP_CONNECTION_NONBLOCKING` | Controls whether startup waits for MCP servers to connect before the first query. MCP startup is non-blocking by default: servers connect in the background and their tools become available as they finish. S… |
|
v2.1.273allowManagedMcpServersOnly |
Documentation arrivedAnthropic's documentation has since written up allowManagedMcpServersOnly, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
the line in the docs* **`allowedMcpServers`**: Claude Code honors a parent-supplied allowlist when no admin list is in force. `allowManagedMcpServersOnly` doesn't block it, because the lock enforces whichever list wins as the managed value, including a parent… |
|
v2.1.273allowManagedMcpServersOnly |
Documentation arrivedAnthropic's documentation has since written up allowManagedMcpServersOnly, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
the line in the docs* **`allowedMcpServers`**: Claude Code honors a parent-supplied allowlist when no admin list is in force. `allowManagedMcpServersOnly` doesn't block it, because the lock enforces whichever list wins as the managed value, including a parent… |
|
v2.1.273allowedMcpServers |
Documentation arrivedAnthropic's documentation has since written up allowedMcpServers, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
the line in the docsFrom an admin source below the winner, the two sandbox locks still apply, and `allowManagedPermissionRulesOnly` still blocks parent-supplied allow rules and `additionalDirectories`. On Claude Code v2.1.273 or later, the MCP server lock als… |
|
v2.1.273allowedMcpServers |
Documentation arrivedAnthropic's documentation has since written up allowedMcpServers, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
the line in the docsFrom an admin source below the winner, the two sandbox locks still apply, and `allowManagedPermissionRulesOnly` still blocks parent-supplied allow rules and `additionalDirectories`. On Claude Code v2.1.273 or later, the MCP server lock als… |
|
v2.1.265policyHelper |
Documentation arrivedAnthropic's documentation has since written up policyHelper, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
the line in the docsThe hooks lock and `allowManagedPermissionRulesOnly`'s effect on the developer's own rules need the winning source by default; under the `managedSourcesBehavior` merge opt-in in [how Claude Code combines managed sources](/docs/en/managed-s… |
|
v2.1.265managedSourcesBehavior |
Documentation arrivedAnthropic's documentation has since written up managedSourcesBehavior, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
the line in the docsThe hooks lock and `allowManagedPermissionRulesOnly`'s effect on the developer's own rules need the winning source by default; under the `managedSourcesBehavior` merge opt-in in [how Claude Code combines managed sources](/docs/en/managed-s… |
|
v2.1.265managedSourcesBehavior |
Documentation arrivedAnthropic's documentation has since written up managedSourcesBehavior, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
the line in the docsThe hooks lock and `allowManagedPermissionRulesOnly`'s effect on the developer's own rules need the winning source by default; under the `managedSourcesBehavior` merge opt-in in [how Claude Code combines managed sources](/docs/en/managed-s… |
|
v2.1.248managedSourcesBehavior |
Documentation arrivedAnthropic's documentation has since written up managedSourcesBehavior, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
the line in the docsThe hooks lock and `allowManagedPermissionRulesOnly`'s effect on the developer's own rules need the winning source by default; under the `managedSourcesBehavior` merge opt-in in [how Claude Code combines managed sources](/docs/en/managed-s… |
|
v2.1.242managedSourcesBehavior |
Documentation arrivedAnthropic's documentation has since written up managedSourcesBehavior, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.
the line in the docsThe hooks lock and `allowManagedPermissionRulesOnly`'s effect on the developer's own rules need the winning source by default; under the `managedSourcesBehavior` merge opt-in in [how Claude Code combines managed sources](/docs/en/managed-s… |
|
v2.1.246command: |
Documentation arrivedA small documentation edit on Extend agents with skills touched a line naming command: after this was published.
the line in the docsA `/<name>` that matches neither a command in the session nor a built-in Claude Code command doesn't fail the query. Claude Code sends the prompt to Claude as an ordinary message, with a note that the command didn't run, so the query spend… |
|
v2.1.259permissionPromptToolName |
Documentation arrivedAnthropic's documentation has since written up permissionPromptToolName, on Connect to external tools with MCP.
the line in the docsIf you set `permissionPromptToolName`, the first turn also waits for that tool's server in every case, up to `MCP_TIMEOUT`. |
|
v2.1.273/install-github-app |
Documentation arrivedAnthropic's documentation has since written up /install-github-app, on Error reference.
the line in the docsYou ran [`/install-github-app`](/docs/en/github-actions#quick-setup) and chose a repository whose organization enforces SAML single sign-on. Before setup, Claude Code checks your access to the repository with the GitHub CLI, and GitHub ref… |
|
v2.1.273NODE_EXTRA_CA_CERTS |
Documentation arrivedAnthropic's documentation has since written up NODE_EXTRA_CA_CERTS, on Error reference.
the line in the docsUnable to connect to API: SSL certificate verification failed (UNABLE_TO_GET_ISSUER_CERT_LOCALLY). The certificate comes from an authority Claude Code doesn't trust, usually a TLS-inspecting corporate proxy or a gateway signed by a private… |
|
v2.1.206tengu_umber_kestrel |
Flag reading movedThe flag server now returns on for tengu_umber_kestrel, read as this account. | |
v2.1.239tengu_toasty_breeze |
Flag reading movedThe flag server now returns {"allowanceNote":"{percent} allowance left","budgetExhaustedCopy":"You've used this week's lower-priority allowance","cooloffMinutes":10,"enabled":true,"label":"Continue now at lower priority","noticeLine":"/low-priority to continue now at lower priority · uses your weekly limit","statusLine":"Lower priority until {reset}","version":3,"waitBanner":"Working at lower priority · waiting for capacity"} for tengu_toasty_breeze, read as this account. | |
v2.1.239tengu_toasty_breeze |
Flag reading movedThe flag server now returns {"allowanceNote":"{percent} allowance left","budgetExhaustedCopy":"You've used this week's lower-priority allowance","cooloffMinutes":10,"enabled":true,"label":"Continue now at lower priority","noticeLine":"/low-priority to continue now at lower priority · uses your weekly limit","statusLine":"Lower priority until {reset}","version":3,"waitBanner":"Working at lower priority · waiting for capacity"} for tengu_toasty_breeze, read as this account. | |
v2.1.248tengu_nifty_lemur |
Flag reading movedThe flag server now returns {"autoContinue":true,"enabled":true,"label":"Reset your session limit now","noticeLine":"/limit-reset to reset your session limit now · uses weekly limit · 1/week","spentLine":"Weekly reset used · available again {date}","successLine":"Session limit reset · next reset available {date} · your weekly limit still applies","unavailableLine":"Couldn't reset your session limit right now · try again in a moment","version":1} for tengu_nifty_lemur, read as this account. | |
v2.1.248tengu_nifty_lemur |
Flag reading movedThe flag server now returns {"autoContinue":true,"enabled":true,"label":"Reset your session limit now","noticeLine":"/limit-reset to reset your session limit now · uses weekly limit · 1/week","spentLine":"Weekly reset used · available again {date}","successLine":"Session limit reset · next reset available {date} · your weekly limit still applies","unavailableLine":"Couldn't reset your session limit right now · try again in a moment","version":1} for tengu_nifty_lemur, read as this account. | |
v2.1.223tengu_juniper_relay |
Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. | |
v2.1.251tengu_juniper_relay |
Flag reading movedThe flag server now returns on for tengu_juniper_relay, read as this account. | |
v2.1.273declare |
Documentation arrivedAnthropic's documentation has since written up declare, on Configuration reference.
the line in the docsWhen set, Cowork, Chat and Code sessions connect the managed list above and the servers the desktop serves from the administrator's org-plugins directory, plus only servers declared by other plugins (user-installed or marketplace) that mat… |
|
v2.1.273declare |
Documentation arrivedAnthropic's documentation has since written up declare, on Configuration reference.
the line in the docsWhen set, Cowork, Chat and Code sessions connect the managed list above and the servers the desktop serves from the administrator's org-plugins directory, plus only servers declared by other plugins (user-installed or marketplace) that mat… |
|
v2.1.265Salesforce |
Documentation arrivedAnthropic's documentation has since written up Salesforce, on Changelog.
the line in the docs* Added a Salesforce preset to the plugin marketplace picker in the Setup window. |
|
v2.1.267safeguards |
Documentation arrivedA small documentation edit on Claude Science changelog touched a line naming safeguards after this was published.
the line in the docs* If your organization is in Anthropic's Life Sciences Verification Program (beta), you can now [choose a use case](/docs/claude-science/safeguards#choose-a-use-case) for your sessions |
|
v2.1.267safeguards |
Documentation arrivedA small documentation edit on Claude Science changelog touched a line naming safeguards after this was published.
the line in the docs* If your organization is in Anthropic's Life Sciences Verification Program (beta), you can now [choose a use case](/docs/claude-science/safeguards#choose-a-use-case) for your sessions |
|
v2.1.206tengu_umber_kestrel |
Flag reading movedThe flag server now returns off for tengu_umber_kestrel, read as this account. | |
v2.1.239tengu_toasty_breeze |
Flag reading movedThe flag server now returns {"enabled":false,"version":0} for tengu_toasty_breeze, read as this account. |