Skip to main content

Anthropic Functions

This notebook shows how to use an experimental wrapper around Anthropic that gives it the same API as OpenAI Functions.

from langchain_experimental.llms.anthropic_functions import AnthropicFunctions

Initialize Model​

You can initialize this wrapper the same way you’d initialize ChatAnthropic

model = AnthropicFunctions(model="claude-2")

Passing in functions​

You can now pass in functions in a similar way

functions = [
    {
        "name": "get_current_weather",
        "description": "Get the current weather in a given location",
        "parameters": {
            "type": "object",
            "properties": {
                "location": {
                    "type": "string",
                    "description": "The city and state, e.g. San Francisco, CA",
                },
                "unit": {"type": "string", "enum": ["celsius", "fahrenheit"]},
            },
            "required": ["location"],
        },
    }
]
from langchain.schema import HumanMessage
response = model.invoke(
    [HumanMessage(content="whats the weater in boston?")], functions=functions
)
response
AIMessage(content=' ', additional_kwargs={'function_call': {'name': 'get_current_weather', 'arguments': '{"location": "Boston, MA", "unit": "fahrenheit"}'}}, example=False)

Using for extraction​

You can now use this for extraction.

from langchain.chains import create_extraction_chain

schema = {
    "properties": {
        "name": {"type": "string"},
        "height": {"type": "integer"},
        "hair_color": {"type": "string"},
    },
    "required": ["name", "height"],
}
inp = """
Alex is 5 feet tall. Claudia is 1 feet taller Alex and jumps higher than him. Claudia is a brunette and Alex is blonde.
        """
chain = create_extraction_chain(schema, model)
chain.invoke(inp)

Using for tagging​

You can now use this for tagging

from langchain.chains import create_tagging_chain
schema = {
    "properties": {
        "sentiment": {"type": "string"},
        "aggressiveness": {"type": "integer"},
        "language": {"type": "string"},
    }
}
chain = create_tagging_chain(schema, model)
chain.invoke("this is really cool")
{'sentiment': 'positive', 'aggressiveness': '0', 'language': 'english'}