chore(deps): bump @langchain/anthropic from 0.3.34 to 1.5.12

[dependabot]

Bumps @langchain/anthropic from 0.3.34 to 1.5.12.

Release notes

Sourced from @​langchain/anthropic's releases.

@​langchain/anthropic@​1.5.12

Patch Changes

• #11707 4109812 Thanks @​richardscarrott! - feat(anthropic): support mid-conversation tool changes. A SystemMessage can now carry Anthropic's tool_addition and tool_removal blocks, either bare in content or wrapped in a non_standard block, and they reach the provider verbatim. The required beta is added automatically: mid-conversation-tool-changes-2026-07-01 for tools named by reference, or inline-tools-2026-09-15 when a tool_addition defines a tool by value (tool: { type: "tool_definition", definition }).

  System content is now narrowed to what Anthropic accepts there. text, tool_addition and tool_removal are sent; any other block is dropped instead of being forwarded for the provider to reject. A system message left with no content is omitted.

@​langchain/anthropic@​1.5.11

Patch Changes

• #11669 fb2a9f3 Thanks @​richardscarrott! - feat(anthropic): accept a SystemMessage anywhere in the message list. Previously only the first message could be a system message. Anything else threw.

  A system message that isn't first is now sent at its own position. It applies from that point in the conversation onwards, and adding one leaves the prompt cache for the earlier turns intact.

  Two smaller changes come with it. A leading run of two or more SystemMessages now merges into the top-level system field instead of being rejected. System content built from standard content blocks no longer sends the internal block id to the provider.

@​langchain/anthropic@​1.5.10

Patch Changes

• #11530 c9b7eac Thanks @​hntrl! - Add support for Claude Fable 5.1.

@​langchain/anthropic@​1.5.10-rc.0

Patch Changes

• #11530 c9b7eac Thanks @​hntrl! - Add support for Claude Fable 5.1.

@​langchain/anthropic@​1.5.9

Patch Changes

• #11475 6bffc71 Thanks @​davila7! - feat(anthropic): add claude-sonnet-5 support

Commits

• bc4466b chore: version packages (#11788)
• 4109812 feat(anthropic,openai): support tool changes in system messages (#11707)
• 63ca83e chore(deps): bump hono from 4.13.5 to 4.13.7 (#11786)
• 417ddcf chore: version packages (#11749)
• bbed273 feat(openai): report Responses API file MIME types in model profile (#11771)
• 56a7f0b chore(mcp-adapters): release adapter v2 (#11767)
• 51b3b7b refactor(mcp-adapters): drop config guards that only served 1.x upgrades (#11...
• ab0181f feat(mcp-adapters)!: prefix tool names with the server name by default, and r...
• 347bc0b fix(mcp-adapters): stop cancelled discovery before acquiring another server (...
• ba4e7a2 fix(mcp-adapters): return MCP tool errors as error ToolMessages (#11758)
• Additional commits viewable in compare view

[dependabot]

Labels

The following labels could not be found: npm. Please create it before Dependabot can add it to a pull request.

Please fix the above issues or remove invalid values from dependabot.yml.