How to send headers in API chain chain = OpenAPIEndpointChain.from_api_operation( operation, llm, requests=Requests(), verbose=True, return_intermediate_steps=True, # Return request and response text )

[Nidhipriya8]

Checked other resources

• I added a very descriptive title to this question.
• I searched the LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.

Commit to Help

• I commit to help with one of those options 👆

Example Code

spec = OpenAPISpec.from_url(
    "https://translation-pp.monotype.com/translation/swagger.json"
)

operation = APIOperation.from_openapi_spec(spec, "/translation/", "post")
headers = {"accept-language": "de"}
openai_requests_wrapper=RequestsWrapper(headers=headers)
data={
  "mdFive": "fbc144a05b49f8198cae5810f320ad44",
  "targetLang": "de",
  "translation": "grows"
}
llm =OpenAI(temperature=0,model="gpt-3.5-turbo-instruct")

chain = OpenAPIEndpointChain.from_api_operation(
    operation,
    llm,
    
    requests=Requests(),
  
    verbose=True,
    return_intermediate_steps=True,  # Return request and response text
)
output = chain(f"Did a new translation get posted for {data}?What is API status code returned?")

Description

I am unable to pass headers successfully in the request.

System Info

Mac Os
python versionn3.11

the output of python -m langchain_core.sys_info
/Users/nidhipriya/anaconda3/bin/python: Error while finding module specification for 'langchain_core.sys_info' (ModuleNotFoundError: No module named 'langchain_core')
(base) nidhipriya@NOI-C02D64QFMD6N MigrationCheck % python3 -m langchain_core.sys_info
/usr/local/opt/python@3.11/bin/python3.11: Error while finding module specification for 'langchain_core.sys_info' (ModuleNotFoundError: No module named 'langchain_core')

[dosubot[bot]]

🤖

Hey there, @Nidhipriya8! Great to see you back in the LangChain realm. Hope this challenge turns into a triumph with a bit of teamwork!

Based on the context provided, it seems like you're trying to pass headers to the API request using the OpenAPIEndpointChain.from_api_operation method in the LangChain framework. However, this method does not directly support passing headers in the request.

From the issues I found in the LangChain repository, it seems that other users have faced similar problems. Here are some of the relevant issues:

1. OpenAPI agent treating 'headers' as query parameters for any endpoint in the openapi spec
2. LLMRequestsChain not enforcing headers when making http requests
3. Not able to Pass in Headers in the Requests module

In the third issue, a user suggested a solution where they set the headers directly on the requests object like so: requests.headers = {"for" : "bar"}. However, this might not be the best approach as it would set the headers for all subsequent requests made using that requests object.

A more appropriate way to handle this would be to modify the deserialize_json_input method in the OpenAPIEndpointChain class to include headers in the request arguments. Here's how you can do it:

def deserialize_json_input(self, serialized_args: str) -> dict:
    """Use the serialized typescript dictionary.

    Resolve the path, query params dict, and optional requestBody dict.
    """
    args: dict = json.loads(serialized_args)
    path = self._construct_path(args)
    body_params = self._extract_body_params(args)
    query_params = self._extract_query_params(args)
    headers = args.get('headers', {})  # Extract headers from the arguments
    return {
        "url": path,
        "data": body_params,
        "params": query_params,
        "headers": headers,  # Include headers in the request arguments
    }

In this modification, we're assuming that the headers are passed in the serialized arguments under the key 'headers'. If the headers are not provided, an empty dictionary is used as a default.

Please note that this modification will affect all API calls made using this chain. If you need to pass different headers for different API calls, you should ensure that the correct headers are included in the serialized arguments for each call.

I hope this helps! If you have any other questions, feel free to ask.

Sources

• OpenAPI agent treating 'headers' as query parameters for any endpoint in the openapi spec
• LLMRequestsChain not enforcing headers when making http requests
• Not able to Pass in Headers in the Requests module
• libs/langchain/langchain/chains/api/openapi/chain.py

About Dosu

This response is meant to be useful and save you time. It is not meant to be a precise solution, but rather a starting point for your own research.

Help me be more useful! Please leave a 👍 if this is helpful and 👎 if it is irrelevant.

If you want to continue the conversation, start your reply with @dosu-bot.

[suribe06]

@Nidhipriya8 How did you solve this problem?