--- title: "@anthropic-ai/sdk Breaking Changes on npm | Since.dev" description: "What each @anthropic-ai/sdk release removed, renamed or changed: 264 breaking changes in 10 versions on npm, each with its source." canonical_url: https://since.dev/packages/npm/@anthropic-ai/sdk last_updated: 2026-10-21 --- # @anthropic-ai/sdk breaking changes Every breaking API change we have recorded in @anthropic-ai/sdk on npm: 264 breaking changes in 10 versions. Below are its newest 6 versions, removals and renames first, each with its source. Newest change October 21, 2026 ## 1.0.0 1 breaking change, first published October 21, 2026. - **Signature changed** `messages.create` Code that passes temperature, top_p and top_k fails once it upgrades to 1.0.0 or later. Recommended replacement: Omit and use prompting to guide model behavior. [platform.claude.com](https://platform.claude.com/docs/en/api/migration-2026-10-21) ## 0.68.0 8 breaking changes, first published October 28, 2025. - **Signature changed** `Anthropic.Beta.BetaContextManagementConfig.edits` Was edits?: Array; now edits?: Array. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.68.0) - **Signature changed** `Anthropic.Beta.BetaContextManagementResponse.applied_edits` Was applied_edits: Array; now applied_edits: Array. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.68.0) - **Signature changed** `Anthropic.Beta.Messages.BetaContextManagementConfig.edits` Was edits?: Array; now edits?: Array. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.68.0) - **Signature changed** `Anthropic.Beta.Messages.BetaContextManagementResponse.applied_edits` Was applied_edits: Array; now applied_edits: Array. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.68.0) - **Signature changed** `default.Beta.BetaContextManagementConfig.edits` Was edits?: Array; now edits?: Array. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.68.0) - **Signature changed** `default.Beta.BetaContextManagementResponse.applied_edits` Was applied_edits: Array; now applied_edits: Array. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.68.0) - **Signature changed** `default.Beta.Messages.BetaContextManagementConfig.edits` Was edits?: Array; now edits?: Array. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.68.0) - **Signature changed** `default.Beta.Messages.BetaContextManagementResponse.applied_edits` Was applied_edits: Array; now applied_edits: Array. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.68.0) ## 0.67.0 24 breaking changes, first published October 16, 2025. - **Signature changed** `Anthropic.AnthropicBeta` Was type AnthropicBeta = (string & {}) | 'message-batches-2024-09-24' | 'prompt-caching-2024-07-31' | 'computer-use-2024-10-22' | 'computer-use-2025-01-24' | 'pdfs-2024-09-25' | 'token-counting-2024-11-01' |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) - **Signature changed** `Anthropic.Beta.AnthropicBeta` Was type AnthropicBeta = (string & {}) | 'message-batches-2024-09-24' | 'prompt-caching-2024-07-31' | 'computer-use-2024-10-22' | 'computer-use-2025-01-24' | 'pdfs-2024-09-25' | 'token-counting-2024-11-01' |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) - **Signature changed** `Anthropic.Beta.MessageCreateParams.MessageCreateParamsNonStreaming.container` Was container?: string | null; now container?: BetaContainerParams | string | null. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) - **Signature changed** `Anthropic.Beta.MessageCreateParams.MessageCreateParamsStreaming.container` Was container?: string | null; now container?: BetaContainerParams | string | null. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) - **Signature changed** `Anthropic.Beta.MessageCreateParamsNonStreaming.container` Was container?: string | null; now container?: BetaContainerParams | string | null. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) - **Signature changed** `Anthropic.Beta.MessageCreateParamsStreaming.container` Was container?: string | null; now container?: BetaContainerParams | string | null. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) - **Signature changed** `Anthropic.Beta.Messages.BetaToolRunnerParams.container` Was container?: string | null; now container?: BetaContainerParams | string | null. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) - **Signature changed** `Anthropic.Beta.Messages.MessageCreateParams.MessageCreateParamsNonStreaming.container` Was container?: string | null; now container?: BetaContainerParams | string | null. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) - **Signature changed** `Anthropic.Beta.Messages.MessageCreateParams.MessageCreateParamsStreaming.container` Was container?: string | null; now container?: BetaContainerParams | string | null. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) - **Signature changed** `Anthropic.Beta.Messages.MessageCreateParamsNonStreaming.container` Was container?: string | null; now container?: BetaContainerParams | string | null. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.67.0) And 14 more in this version. ## 0.66.0 6 breaking changes, first published October 15, 2025. - **Signature changed** `Anthropic.AnthropicBeta` Was type AnthropicBeta = (string & {}) | 'message-batches-2024-09-24' | 'prompt-caching-2024-07-31' | 'computer-use-2024-10-22' | 'computer-use-2025-01-24' | 'pdfs-2024-09-25' | 'token-counting-2024-11-01' |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.66.0) - **Signature changed** `Anthropic.Beta.AnthropicBeta` Was type AnthropicBeta = (string & {}) | 'message-batches-2024-09-24' | 'prompt-caching-2024-07-31' | 'computer-use-2024-10-22' | 'computer-use-2025-01-24' | 'pdfs-2024-09-25' | 'token-counting-2024-11-01' |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.66.0) - **Signature changed** `Anthropic.Messages.Model` Was type Model = 'claude-3-7-sonnet-latest' | 'claude-3-7-sonnet-20250219' | 'claude-3-5-haiku-latest' | 'claude-3-5-haiku-20241022' | 'claude-sonnet-4-20250514' | 'claude-sonnet-4-0' | 'claude-4-sonnet-20250514' | 'claude-sonnet-4-5' |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.66.0) - **Signature changed** `Anthropic.Model` Was type Model = 'claude-3-7-sonnet-latest' | 'claude-3-7-sonnet-20250219' | 'claude-3-5-haiku-latest' | 'claude-3-5-haiku-20241022' | 'claude-sonnet-4-20250514' | 'claude-sonnet-4-0' | 'claude-4-sonnet-20250514' | 'claude-sonnet-4-5' |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.66.0) - **Signature changed** `default.Beta.AnthropicBeta` Was type AnthropicBeta = (string & {}) | 'message-batches-2024-09-24' | 'prompt-caching-2024-07-31' | 'computer-use-2024-10-22' | 'computer-use-2025-01-24' | 'pdfs-2024-09-25' | 'token-counting-2024-11-01' |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.66.0) - **Signature changed** `default.Messages.Model` Was type Model = 'claude-3-7-sonnet-latest' | 'claude-3-7-sonnet-20250219' | 'claude-3-5-haiku-latest' | 'claude-3-5-haiku-20241022' | 'claude-sonnet-4-20250514' | 'claude-sonnet-4-0' | 'claude-4-sonnet-20250514' | 'claude-sonnet-4-5' |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.66.0) ## 0.50.1 88 breaking changes, first published May 9, 2025. - **Signature changed** `Anthropic` Was class Anthropic extends Core.APIClient; now class Anthropic extends BaseAnthropic. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) - **Signature changed** `Anthropic.Anthropic` Was static Anthropic: typeof Anthropic; now static Anthropic: typeof BaseAnthropic. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) - **Signature changed** `Anthropic.apiKeyAuth` Was protected apiKeyAuth(opts: Core.FinalRequestOptions): Core.Headers; now protected apiKeyAuth(opts: FinalRequestOptions): NullableHeaders | undefined. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) - **Signature changed** `Anthropic.authHeaders` Was protected authHeaders(opts: Core.FinalRequestOptions): Core.Headers; now protected authHeaders(opts: FinalRequestOptions): NullableHeaders | undefined. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) - **Signature changed** `Anthropic.bearerAuth` Was protected bearerAuth(opts: Core.FinalRequestOptions): Core.Headers; now protected bearerAuth(opts: FinalRequestOptions): NullableHeaders | undefined. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) - **Signature changed** `Anthropic.Beta._client` Was protected \_client: Core.APIClient; now protected \_client: BaseAnthropic. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) - **Signature changed** `Anthropic.Beta.BetaModelInfosPage` Was class BetaModelInfosPage extends Page; now type BetaModelInfosPage = Page. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) - **Signature changed** `Anthropic.Beta.Messages._client` Was protected \_client: Core.APIClient; now protected \_client: BaseAnthropic. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) - **Signature changed** `Anthropic.Beta.Messages.Batches._client` Was protected \_client: Core.APIClient; now protected \_client: BaseAnthropic. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) - **Signature changed** `Anthropic.Beta.Messages.Batches.BetaMessageBatchesPage` Was class BetaMessageBatchesPage extends Page; now type BetaMessageBatchesPage = Page. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.50.1) And 78 more in this version. ## 0.41.0 67 breaking changes, first published May 7, 2025. - **Signature changed** `Anthropic.Beta.BetaCitationsDelta.citation` Was citation: BetaCitationCharLocation | BetaCitationPageLocation | BetaCitationContentBlockLocation; now citation: BetaCitationCharLocation | BetaCitationPageLocation | BetaCitationContentBlockLocation |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.41.0) - **Signature changed** `Anthropic.Beta.BetaContentBlock` Was type BetaContentBlock = BetaTextBlock | BetaToolUseBlock | BetaThinkingBlock | BetaRedactedThinkingBlock; now type BetaContentBlock = BetaTextBlock | BetaToolUseBlock | BetaServerToolUseBlock | BetaWebSearchToolResultBlock |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.41.0) - **Signature changed** `Anthropic.Beta.BetaContentBlockParam` Was type BetaContentBlockParam = BetaTextBlockParam | BetaImageBlockParam | BetaToolUseBlockParam | BetaToolResultBlockParam | BetaBase64PDFBlock | BetaThinkingBlockParam | BetaRedactedThinkingBlockParam; now type BetaContentBlockParam =... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.41.0) - **Signature changed** `Anthropic.Beta.BetaRawContentBlockStartEvent.content_block` Was content_block: BetaTextBlock | BetaToolUseBlock | BetaThinkingBlock | BetaRedactedThinkingBlock; now content_block: BetaTextBlock | BetaToolUseBlock | BetaServerToolUseBlock | BetaWebSearchToolResultBlock | BetaThinkingBlock |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.41.0) - **Signature changed** `Anthropic.Beta.BetaStopReason` Was type BetaStopReason = 'end_turn' | 'max_tokens' | 'stop_sequence' | 'tool_use'; now type BetaStopReason = 'end_turn' | 'max_tokens' | 'stop_sequence' | 'tool_use' | 'pause_turn' | 'refusal'. [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.41.0) - **Signature changed** `Anthropic.Beta.BetaTextCitation` Was type BetaTextCitation = BetaCitationCharLocation | BetaCitationPageLocation | BetaCitationContentBlockLocation; now type BetaTextCitation = BetaCitationCharLocation | BetaCitationPageLocation | BetaCitationContentBlockLocation |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.41.0) - **Signature changed** `Anthropic.Beta.BetaTextCitationParam` Was type BetaTextCitationParam = BetaCitationCharLocationParam | BetaCitationPageLocationParam | BetaCitationContentBlockLocationParam; now type BetaTextCitationParam = BetaCitationCharLocationParam | BetaCitationPageLocationParam |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.41.0) - **Signature changed** `Anthropic.Beta.BetaToolUnion` Was type BetaToolUnion = BetaTool | BetaToolComputerUse20241022 | BetaToolBash20241022 | BetaToolTextEditor20241022 | BetaToolComputerUse20250124 | BetaToolBash20250124 | BetaToolTextEditor20250124; now type BetaToolUnion = BetaTool |... [npmjs.com](https://www.npmjs.com/package/@anthropic-ai/sdk/v/0.41.0) - **Signature changed** `Anthropic.Beta.MessageCountTokensParams.tools` Was tools?: Array; now tools?: Array