Repository: langchain
Issue: api_controller fails to specify tool in Action, entering infinite loop
Labels: Ɑ: agent,🤖:bug

### Checked other resources

- [X] I added a very descriptive title to this issue.
- [X] I searched the LangChain documentation with the integrated search.
- [X] I used the GitHub search to find a similar question and didn't find it.
- [X] I am sure that this is a bug in LangChain rather than my code.
- [X] The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

### Example Code

```python

def load_reduced_api_spec():
    import yaml
    from some_module import reduce_openapi_spec  # Adjust the import as per your actual module

    with open("resources/openapi_spec.yaml") as f:
        raw_api_spec = yaml.load(f, Loader=yaml.Loader)

    reduced_api_spec = reduce_openapi_spec(raw_api_spec)
    return reduced_api_spec

from langchain_community.utilities import RequestsWrapper
from langchain_community.agent_toolkits.openapi import planner

headers = {'x-api-key': os.getenv('API_KEY')}
requests_wrapper = RequestsWrapper(headers=headers)

api_spec = load_reduced_api_spec()
    
llm = ChatOpenAI(model_name="gpt-4o", temperature=0.25) #gpt-4o # gpt-4-0125-preview # gpt-3.5-turbo-0125

agent = planner.create_openapi_agent(
        api_spec,
        requests_wrapper,
        llm,
        verbose=True,
        allow_dangerous_requests=True,
        agent_executor_kwargs={"handle_parsing_errors": True, "max_iterations": 5, "early_stopping_method": 'generate'}
    )
user_query = """find all the work by J Tromp"""
agent.invoke({"input": user_query})
```

### Error Message and Stack Trace (if applicable)

```
> > Entering new AgentExecutor chain...
> Action: api_planner
> Action Input: find all the work by J. Tromp
Error in LangChainTracer.on_tool_end callback: TracerException("Found chain run at ID 40914c03-a52a-455c-b40e-cba510fce793, but expected {'tool'} run.")
> 
> Observation: 1. **Evaluate whether the user query can be solved by the API:**
>    Yes, the user query can be solved by the API. We can search for the author named "J. Tromp" and then fetch all the papers authored by her.
> 
> 2. **Generate a plan of API calls:**
> 
>    **Step 1:** Search for the author named "J. Tromp" to get her author ID.
>    - **API Call:** `GET /author/search?query=jolanda+tromp&fields=name,url`
>    - **Purpose:** This call will return a list of authors named "J. Tromp" along with their names and URLs on the Semantic Scholar website. We need the author ID from this response.
> 
>    **Step 2:** Fetch all the papers authored by J. Tromp using her author ID.
>    - **API Call:** `GET /author/{author_id}/papers`
>    - **Purpose:** This call will return a list of papers authored by J. Tromp. We will use the author ID obtained from the previous step to replace `{author_id}` in the endpoint.
> 
> 3. **Plan:**
> 
>    1. **GET /author/search?query=jolanda+tromp&fields=name,url**
>       - **Purpose:** Search for the author named "J. Tromp" and obtain her author ID.
>    
>    2. **GET /author/{author_id}/papers**
>       - **Purpose:** Fetch all the papers authored by J. Tromp using her author ID obtained from the previous step.
> Thought:I have the plan to find all the work by J. Tromp. Now, I will execute the plan by making the necessary API calls.
> 
> Action: api_controller
> Action Input: 
> 1. GET /author/search?query=jolanda+tromp&fields=name,url
> 2. GET /author/{author_id}/papers
> 
> > Entering new AgentExecutor chain...
> To execute the plan, I will first perform a search for the author named "J. Tromp" to retrieve the author ID and name. Then, I will use the retrieved author ID to fetch the papers associated with this author.
> 
> Action: Perform a GET request to search for the author named "J. Tromp".
> Action Input: 
> ```json
> {
>   "url": "https://api.semanticscholar.org/graph/v1/author/search",
>   "params": {
>     "query": "J. Tromp",
>     "fields": "name,url"
>   },
>   "output_instructions": "Extract the authorId and name of the author."
> }
> ```
> Observation: Perform a GET request to search for the author named "J. Tromp". is not a valid tool, try one of [requests_get, requests_post].
> Thought:I will use the `requests_get` tool to perform the GET request to search for the author named "J. Tromp".
> 
> Action: Perform a GET request to search for the author named "J. Tromp".
> Action Input: 
> ```json
> {
>   "url": "https://api.semanticscholar.org/graph/v1/author/search",
>   "params": {
>     "query": "J. Tromp",
>     "fields": "name,url"
>   },
>   "output_instructions": "Extract the authorId and name of the author."
> }
> ```
> 
> Observation: Perform a GET request to search for the author named "J. Tromp". is not a valid tool, try one of [requests_get, requests_post].
> Thought:It seems I made an error in specifying the action. I should use the `requests_get` tool correctly.
> 
> Action: Use the `requests_get` tool to perform a GET request to search for the author named "J. Tromp".
> Action Input: 
> ```json
> {
>   "url": "https://api.semanticscholar.org/graph/v1/author/search",
>   "params": {
>     "query": "J. Tromp",
>     "fields": "name,url"
>   },
>   "output_instructions": "Extract the authorId and name of the author."
> }
> ```
> 
> Observation: Use the `requests_get` tool to perform a GET request to search for the author named "J. Tromp". is not a valid tool, try one of [requests_get, requests_post].
> Thought:It seems I made an error in specifying the action. I should use the `requests_get` tool correctly.
> 
> Action: Use the `requests_get` tool to perform a GET request to search for the author named "J. Tromp".
> Action Input: 
> ```json
> {
>   "url": "https://api.semanticscholar.org/graph/v1/author/search",
>   "params": {
>     "query": "J. Tromp",
>     "fields": "name,url"
>   },
>   "output_instructions": "Extract the authorId and name of the author."
> }
> ```
> 
```

And it goes on and on until max iterations is hit. 

### Description

I don't know how/where to modify/influence api_controller prompt instructions to be more strict. The behavior is very inconsistent with. Maybe 1 out of 10 attempts will work as expected, where api_controller's Action will correctly specify just 'requests_get'. 
using gpt-4-0125-preview as LLM improves the behavior somewhat, though it is a lot slower. 

### System Info

gpt-4o