support the tools/function calling API for Anthropic

[aviadr1]

Checked

• I searched existing ideas and did not find a similar one
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Feature request

openai function calling interface improves parsing of structured output. it is also supported by Anthropic by obvciously with different APIs. would be great if LangChain was able to provide a consistent cross-llm API that provides tools/function-calling and at least support OpenAI and Anthropic

Motivation

mainly to parse structured output into pydantic with increased resillience

Proposal (If applicable)

No response

[jakobsa]

The same goes for cohere https://docs.cohere.com/docs/tool-use

LLMs are trained on diverse function calling specs and invocation patterns, even the wrapping syntax ranges from XML to JSON. It would be great if langchain could ease the transition between models by providing a generic way to specify tools and express their invocations by adopting each models tool invocation API to its own generic tool API

[jorge2najo]

And the same goes for ChatVertexAI. 😄

[jorge2najo]

Thank you for your hard work on this amazing open source framework.
I have a similar suggestion that could enhance the documentation: a table similar to the one found at https://python.langchain.com/docs/integrations/chat/, listing all models that provides tools/function-calling.
This could make finding specific functionalities quicker and improve overall usability.

[sepiatone]

@aviadr1 Anthropic tool calling is available with #20026