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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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What has changed since

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.

Events22,544dated, and never edited afterwards
Newestthe last time anything moved
Flag readings moved17,192a reading is one sample, for one account
Documentation arrived5,242a docs edit touched an entry's names
WhenEntryWhat happened
v2.1.284/model Documentation arrivedA small documentation edit on Claude Code on Amazon Bedrock touched a line naming /model after this was published.
the line in the docs

The [setup wizard](#sign-in-with-bedrock) offers a 1M context option when it pins models. To enable it for a manually pinned model instead, append `[1m]` to the model ID. See [Pin models for third-party deployments](/docs/en/model-config#p…

v2.1.284/model Documentation arrivedA small documentation edit on Claude Code on Amazon Bedrock touched a line naming /model after this was published.
the line in the docs

The [setup wizard](#sign-in-with-bedrock) offers a 1M context option when it pins models. To enable it for a manually pinned model instead, append `[1m]` to the model ID. See [Pin models for third-party deployments](/docs/en/model-config#p…

v2.1.281/model Documentation arrivedA small documentation edit on Claude Code on Amazon Bedrock touched a line naming /model after this was published.
the line in the docs

The [setup wizard](#sign-in-with-bedrock) offers a 1M context option when it pins models. To enable it for a manually pinned model instead, append `[1m]` to the model ID. See [Pin models for third-party deployments](/docs/en/model-config#p…

v2.1.281/model Documentation arrivedA small documentation edit on Claude Code on Amazon Bedrock touched a line naming /model after this was published.
the line in the docs

The [setup wizard](#sign-in-with-bedrock) offers a 1M context option when it pins models. To enable it for a manually pinned model instead, append `[1m]` to the model ID. See [Pin models for third-party deployments](/docs/en/model-config#p…

v2.1.259pins Documentation arrivedA small documentation edit on Claude Code on Amazon Bedrock touched a line naming pins after this was published.
the line in the docs

The [setup wizard](#sign-in-with-bedrock) offers a 1M context option when it pins models. To enable it for a manually pinned model instead, append `[1m]` to the model ID. See [Pin models for third-party deployments](/docs/en/model-config#p…

v2.1.259pins Documentation arrivedA small documentation edit on Claude Code on Amazon Bedrock touched a line naming pins after this was published.
the line in the docs

The [setup wizard](#sign-in-with-bedrock) offers a 1M context option when it pins models. To enable it for a manually pinned model instead, append `[1m]` to the model ID. See [Pin models for third-party deployments](/docs/en/model-config#p…

v2.1.281disableBypassPermissionsMode Documentation arrivedAnthropic's documentation has since written up disableBypassPermissionsMode, on Claude apps gateway configuration.
the line in the docs

`blockReadsOutsideWorkingDirectories`, `disableBypassPermissionsMode`, `configRecheckIntervalMinutes`, and `sshClientPath` need Claude Code v2.1.281 or later on the gateway server. So do the `required` value of `microsoftAuthBroker` and th…

v2.1.281microsoftAuthBroker Documentation arrivedAnthropic's documentation has since written up microsoftAuthBroker, on Claude apps gateway configuration.
the line in the docs

`blockReadsOutsideWorkingDirectories`, `disableBypassPermissionsMode`, `configRecheckIntervalMinutes`, and `sshClientPath` need Claude Code v2.1.281 or later on the gateway server. So do the `required` value of `microsoftAuthBroker` and th…

v2.1.281sshClientPath Documentation arrivedAnthropic's documentation has since written up sshClientPath, on Claude apps gateway configuration.
the line in the docs

`blockReadsOutsideWorkingDirectories`, `disableBypassPermissionsMode`, `configRecheckIntervalMinutes`, and `sshClientPath` need Claude Code v2.1.281 or later on the gateway server. So do the `required` value of `microsoftAuthBroker` and th…

v2.1.281continuousAccessEvaluation Documentation arrivedAnthropic's documentation has since written up continuousAccessEvaluation, on Claude apps gateway configuration.
the line in the docs

`blockReadsOutsideWorkingDirectories`, `disableBypassPermissionsMode`, `configRecheckIntervalMinutes`, and `sshClientPath` need Claude Code v2.1.281 or later on the gateway server. So do the `required` value of `microsoftAuthBroker` and th…

v2.1.281guardrail Documentation arrivedAnthropic's documentation has since written up guardrail, on Claude apps gateway configuration.
the line in the docs

##### Apply an Amazon Bedrock guardrail

v2.1.281guardrail Documentation arrivedAnthropic's documentation has since written up guardrail, on Claude apps gateway configuration.
the line in the docs

##### Apply an Amazon Bedrock guardrail

v2.1.281--setting-sources Documentation arrivedAnthropic's documentation has since written up --setting-sources, on Plugin loading reference.
the line in the docs

* A session you start with a [`--setting-sources`](/docs/en/cli-reference#cli-flags) list that leaves out `user`

v2.1.281--continue Documentation arrivedA small documentation edit on Hooks reference touched a line naming --continue after this was published.
the line in the docs

| `fork` | A new session forked from an existing one: `--fork-session` with `--resume` or `--continue`, the `/fork` background copy, `/branch`, or a conversation you [move to the background](/docs/en/agent-view#from-inside-a-session) |

v2.1.260--fork-session Documentation arrivedA small documentation edit on Hooks reference touched a line naming --fork-session after this was published.
the line in the docs

| `fork` | A new session forked from an existing one: `--fork-session` with `--resume` or `--continue`, the `/fork` background copy, `/branch`, or a conversation you [move to the background](/docs/en/agent-view#from-inside-a-session) |

v2.1.281/context Documentation arrivedA small documentation edit on Customize your status line touched a line naming /context after this was published.
the line in the docs

* The status line reports the counts from the last API response, while `/context` adds an estimate for messages added since that response, so `/context` can read higher until the next response

v2.1.281--plugin-dir Documentation arrivedAnthropic's documentation has since written up --plugin-dir, on All settings.
the line in the docs

Reject the `--plugin-dir`, `--plugin-url`, `--agents`, and `--mcp-config` CLI flags at startup, which users could otherwise pass to bypass [`strictKnownMarketplaces`](#strictknownmarketplaces) for a single run. Claude Code exits with an er…

v2.1.284--model Documentation arrivedAnthropic's documentation has since written up --model, on Model configuration.
the line in the docs

If you set the model with the `--model` flag, the `ANTHROPIC_MODEL` environment variable, or the `model` setting, Claude Code doesn't check it up front, and a mistyped value produces [There's an issue with the selected model](/docs/en/erro…

v2.1.281--agents Documentation arrivedA small documentation edit on Deploy managed settings touched a line naming --agents after this was published.
the line in the docs

| [`disableSideloadFlags`](/docs/en/settings-reference#disablesideloadflags) | Reject the `--plugin-dir`, `--plugin-url`, `--agents`, and `--mcp-config` flags at startup. In cloud sessions, Claude Code instead starts the session and drops …

v2.1.281--agents Documentation arrivedA small documentation edit on Deploy managed settings touched a line naming --agents after this was published.
the line in the docs

| [`disableSideloadFlags`](/docs/en/settings-reference#disablesideloadflags) | Reject the `--plugin-dir`, `--plugin-url`, `--agents`, and `--mcp-config` flags at startup. In cloud sessions, Claude Code instead starts the session and drops …

v2.1.281disableSideloadFlags Documentation arrivedA small documentation edit on Deploy managed settings touched a line naming disableSideloadFlags after this was published.
the line in the docs

| [`disableSideloadFlags`](/docs/en/settings-reference#disablesideloadflags) | Reject the `--plugin-dir`, `--plugin-url`, `--agents`, and `--mcp-config` flags at startup. In cloud sessions, Claude Code instead starts the session and drops …

v2.1.277disableSideloadFlags Documentation arrivedA small documentation edit on Deploy managed settings touched a line naming disableSideloadFlags after this was published.
the line in the docs

| [`disableSideloadFlags`](/docs/en/settings-reference#disablesideloadflags) | Reject the `--plugin-dir`, `--plugin-url`, `--agents`, and `--mcp-config` flags at startup. In cloud sessions, Claude Code instead starts the session and drops …

v2.1.280Esc Documentation arrivedA small documentation edit on Claude Code GitHub Actions touched a line naming Esc after this was published.
the line in the docs

To stop setup partway through, press Esc. A step already in progress finishes, and no later step starts. The closing message lists what already happened in the repository, such as a pushed branch or a saved secret.

v2.1.280Esc Documentation arrivedA small documentation edit on Claude Code GitHub Actions touched a line naming Esc after this was published.
the line in the docs

To stop setup partway through, press Esc. A step already in progress finishes, and no later step starts. The closing message lists what already happened in the repository, such as a pushed branch or a saved secret.

v2.1.281/desktop Documentation arrivedAnthropic's documentation has since written up /desktop, on Error reference.
the line in the docs

The string you passed to a model switch isn't one Claude Code can use as a model, so it refused the switch without sending a request and the session keeps its current model. You can get this error when a model is set through the [Agent SDK…

v2.1.284sonnet Documentation arrivedAnthropic's documentation has since written up sonnet, on Error reference.
the line in the docs

Model "Sonnet5" is not a recognized model id. Did you mean 'claude-sonnet-5'?

v2.1.284sonnet Documentation arrivedAnthropic's documentation has since written up sonnet, on Error reference.
the line in the docs

Model "Sonnet5" is not a recognized model id. Did you mean 'claude-sonnet-5'?

v2.1.284sonnet Documentation arrivedAnthropic's documentation has since written up sonnet, on Error reference.
the line in the docs

Model "Sonnet5" is not a recognized model id. Did you mean 'claude-sonnet-5'?

v2.1.283http.sslCAInfo Documentation arrivedAnthropic's documentation has since written up http.sslCAInfo, on Deploy self-hosted environments to production.
the line in the docs

* **Git inside the session**: gets `http.sslCAInfo` configuration naming your file in place of the variable, plus `http.<url>.sslCAInfo` entries that check Anthropic-managed git against the per-session file.

v2.1.283GIT_SSL_CAINFO Documentation arrivedAnthropic's documentation has since written up GIT_SSL_CAINFO, on Deploy self-hosted environments to production.
the line in the docs

This section applies if you set `GIT_SSL_CAINFO` or `GIT_SSL_NO_VERIFY` in the environment of a runner whose sessions use Anthropic-managed git. The handling it describes requires the runner to run Claude Code v2.1.283 or later.

v2.1.283GIT_SSL_CAINFO Documentation arrivedAnthropic's documentation has since written up GIT_SSL_CAINFO, on Deploy self-hosted environments to production.
the line in the docs

This section applies if you set `GIT_SSL_CAINFO` or `GIT_SSL_NO_VERIFY` in the environment of a runner whose sessions use Anthropic-managed git. The handling it describes requires the runner to run Claude Code v2.1.283 or later.

v2.1.284sonnet Documentation arrivedA small documentation edit on Model configuration touched a line naming sonnet after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.284sonnet Documentation arrivedA small documentation edit on Model configuration touched a line naming sonnet after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.284sonnet Documentation arrivedA small documentation edit on Model configuration touched a line naming sonnet after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.284availableModels Documentation arrivedA small documentation edit on Model configuration touched a line naming availableModels after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.283availableModels Documentation arrivedA small documentation edit on Model configuration touched a line naming availableModels after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.283availableModels Documentation arrivedA small documentation edit on Model configuration touched a line naming availableModels after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.283availableModels Documentation arrivedA small documentation edit on Model configuration touched a line naming availableModels after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.283availableModels Documentation arrivedA small documentation edit on Model configuration touched a line naming availableModels after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.277claude-fable-5-1 Documentation arrivedA small documentation edit on Model configuration touched a line naming claude-fable-5-1 after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.284fable Documentation arrivedA small documentation edit on Model configuration touched a line naming fable after this was published.
the line in the docs

Administrators can use `availableModels` in [managed or policy settings](/docs/en/managed-settings) to restrict which models users can select. Entries match a model family such as `sonnet`, a version prefix such as `claude-sonnet-4-5`, or …

v2.1.283claude update Documentation arrivedA small documentation edit on Model configuration touched a line naming claude update after this was published.
the line in the docs

Sonnet 5.5 requires Claude Code v2.1.284 or later, and Opus 5.5 requires v2.1.280 or later. If a request for one of them from an older version fails, see [Claude Code does not support this model](/docs/en/errors#claude-code-does-not-suppor…

v2.1.274claude update Documentation arrivedA small documentation edit on Model configuration touched a line naming claude update after this was published.
the line in the docs

Sonnet 5.5 requires Claude Code v2.1.284 or later, and Opus 5.5 requires v2.1.280 or later. If a request for one of them from an older version fails, see [Claude Code does not support this model](/docs/en/errors#claude-code-does-not-suppor…

v2.1.282strictKnownMarketplaces Documentation arrivedA small documentation edit on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry touched a line naming strictKnownMarketplaces after this was published.
the line in the docs

A plugin marketplace allowlist also reaches embedded sessions only as parent settings. When you turn user-added plugin marketplaces off in Claude Desktop's managed configuration, Claude Desktop 2.16120.0 or later hides marketplaces your or…

v2.1.282strictKnownMarketplaces Documentation arrivedA small documentation edit on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry touched a line naming strictKnownMarketplaces after this was published.
the line in the docs

A plugin marketplace allowlist also reaches embedded sessions only as parent settings. When you turn user-added plugin marketplaces off in Claude Desktop's managed configuration, Claude Desktop 2.16120.0 or later hides marketplaces your or…

v2.1.282strictKnownMarketplaces Documentation arrivedA small documentation edit on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry touched a line naming strictKnownMarketplaces after this was published.
the line in the docs

A plugin marketplace allowlist also reaches embedded sessions only as parent settings. When you turn user-added plugin marketplaces off in Claude Desktop's managed configuration, Claude Desktop 2.16120.0 or later hides marketplaces your or…

v2.1.281otelHeadersHelper Documentation arrivedAnthropic's documentation has since written up otelHeadersHelper, on Configuration reference.
the line in the docs

Absolute path to an executable that prints a single JSON object of HTTP headers on stdout, e.g. `{"Authorization": "Bearer …"}`. The desktop runs it (no arguments; output cached for a few minutes, and a failure is not retried for 30 second…

v2.1.284claude mcp add Documentation arrivedAnthropic's documentation has since written up claude mcp add, on Configuration reference.
the line in the docs

When set, Cowork, Chat and Code sessions do not connect a plugin's remote server whose URL matches an entry. The key works with or without `allowedPluginMcpServers`; a server that matches both lists stays blocked. In a Code session that re…

v2.1.281parentSettingsBehavior Documentation arrivedAnthropic's documentation has since written up parentSettingsBehavior, on Configuration reference.
the line in the docs

Scoped `Bash(…)` rules apply in Code sessions only; Cowork's shell follows only a bare `Bash` entry. Start absolute file paths with `//`, not `/`: a relative pattern such as `Read(**/.env)` covers only a Code session's project folder and n…

v2.1.281allowedPluginMarketplaces Documentation arrivedAnthropic's documentation has since written up allowedPluginMarketplaces, on Configuration reference.
the line in the docs

When on (default), users can add plugin marketplaces from the plugin browser. Set to `false` to restrict plugins to your organization's marketplaces: the add-marketplace surfaces are hidden, and the app refuses adds that still reach it (de…

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