u/WinnerPristine6119

▲ 1 r/agenticaidev+1 crossposts

need help on tool running before passing to llm

hi,
i'm shan from India. I'm learning Langchain. Since I'm a total noob in python and langchain i'm not able to test my tools in jupyter notebook one by one.

Actually, i'm trying a simple get_weather agent. but i couldn't run the tool before running the llm for testing. Kindly, help me.

Here is my coe:

get_weather.invoke({"location":"beijing"})

get_weather.invoke({"location":"beijing"})

get_weather.invoke({"location":"beijing"})

get_weather.invoke({"location":"beijing"})

get_weather.invoke({"location":"beijing"})

get_weather.invoke({"location":"beijing"})

get_weather.invoke({"location":"beijing"})

get_weather.invoke({"location":"beijing"})

import os
import json
from dotenv import load_dotenv, find_dotenv
from langchain_deepseek import ChatDeepSeek


from urllib.parse import quote
from httpx import request

def get_weather(location:str)->str:
    """
    this is used to get the weather of a city anywhere in the world. 


    Args:
        location (str): specify the location to get its weather. eg) 'New York', 'Beijing', 'New Delhi' e.tc 


    Returns:
        return a string that explains that city's weather in celsius, fareheight and how the weather is.
    """
    key=os.environ.get("WEATHER_API_KEY")
    url="https://api.weatherapi.com/v1/current.json?q={location}&key={key}"
    encoded_url=quote(url)
    response=request.get(encoded_url).json()
    if response:
        return f"weather data for **{location}**: celsius: {response["current"].temp_c} farenheight: {response["current"].temp_f}, day is: {response["current"]["condition"].text}"
    #    data=response.json()
    #    return data
    else:
        return f"Weather API failed retry after some time"



  get_weather.invoke("beijing")

for this i get the error:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[28], line 1
----> 1 get_weather.invoke("beijing")

File ~/Documents/Agentic-experiments/tools-experiments/.venv/lib/python3.12/site-packages/langchain_core/tools/base.py:738, in BaseTool.invoke(self, input, config, **kwargs)
    730 
    731 def invoke(
    732     self,
   (...)    735     **kwargs: Any,
    736 ) -> Any:
    737     tool_input, kwargs = _prep_run_args(input, config, **kwargs)
--> 738     return self.run(tool_input, **kwargs)

File ~/Documents/Agentic-experiments/tools-experiments/.venv/lib/python3.12/site-packages/langchain_core/tools/base.py:1100, in BaseTool.run(self, tool_input, verbose, start_color, color, callbacks, tags, metadata, run_name, run_id, config, tool_call_id, **kwargs)
   1098 if error_to_raise:
   1099     run_manager.on_tool_error(error_to_raise, tool_call_id=tool_call_id)
-> 1100     raise error_to_raise
   1101 output = _format_output(content, artifact, tool_call_id, self.name, status)
   1102 run_manager.on_tool_end(output, color=color, name=self.name, **kwargs)

File ~/Documents/Agentic-experiments/tools-experiments/.venv/lib/python3.12/site-packages/langchain_core/tools/base.py:1066, in BaseTool.run(self, tool_input, verbose, start_color, color, callbacks, tags, metadata, run_name, run_id, config, tool_call_id, **kwargs)
   1064     if config_param := _get_runnable_config_param(self._run):
   1065         tool_kwargs |= {config_param: config}
-> 1066     response = context.run(self._run, *tool_args, **tool_kwargs)
   1067 if self.response_format == "content_and_artifact":
   1068     msg = (
   1069         "Since response_format='content_and_artifact' "
   1070         "a two-tuple of the message content and raw tool output is "
   1071         f"expected. Instead, generated response is of type: "
   1072         f"{type(response)}."
   1073     )

File ~/Documents/Agentic-experiments/tools-experiments/.venv/lib/python3.12/site-packages/langchain_core/tools/structured.py:97, in StructuredTool._run(self, config, run_manager, *args, **kwargs)
     95     if config_param := _get_runnable_config_param(self.func):
     96         kwargs[config_param] = config
---> 97     return self.func(*args, **kwargs)
     98 msg = "StructuredTool does not support sync invocation."
     99 raise NotImplementedError(msg)

Cell In[25], line 41, in get_weather(location)
     37     """
     38     key=os.environ.get("WEATHER_API_KEY")
     39     url="https://api.weatherapi.com/v1/current.json?q={location}&key={key}"
     40     encoded_url=quote(url)
---> 41     response=request.get(encoded_url)
     42     if response:
     43         # return f"weather data for **{location}**: celsius: {response["current"].temp_c} farenheight: {response["current"].temp_f}, day is: {response["current"]["condition"].text}"
     44        data=response.json()

AttributeError: 'function' object has no attribute 'get'

how to resolve this and get results in testing what the tool prints.

reddit.com
u/WinnerPristine6119 — 10 days ago
▲ 3 r/agenticaidev+1 crossposts

getting rate limit error with openai

hi,
this is shan from india. i'm currently learning aggentic ai so using"langchain_openai" for it. first i used "agent.py" to create files it created files with many missing. so created "debug.py" to fix missing files and folders and i hit this

((venv) ) apple@Apples-MacBook-Pro coding-assistant % ./venv/bin/python3.12 debug.py
🚀 Starting project debugging agent...
❌ An error occurred during agent execution: Error code: 429 - {'error': {'message': 'Rate limit reached for gpt-4o in organization org-XXXXXXX on tokens per min (TPM): Limit 30000, Used 26243, Requested 3836. Please try again in 158ms. Visit https://platform.openai.com/account/rate-limits to learn more.', 'type': 'tokens', 'param': None, 'code': 'rate_limit_exceeded'}}

my agent.py:

import os
from dotenv import load_dotenv
from langchain_openai import ChatOpenAI
from langchain_core import tools
from deepagents import create_deep_agent
from tools import (
    create_code_file,
    update_code_file,
    delete_code_file,
    list_code_files,
    read_code_file
)


load_dotenv()


llm = ChatOpenAI(model="gpt-4o", api_key=os.environ.get("OPENAI_API_KEY"))


agent_prompt = """# DEEPAGENT SYSTEM PROMPT — FULLSTACK WEATHER APPLICATION GENERATOR


You are an autonomous senior fullstack engineer and DevOps executor.


Your task is to fully generate, install, configure, test, and run a complete weather application project using:


* Backend:


  * Python 3.12
  * FastAPI
  * LangChain orchestration
  * Open-Meteo weather API
  * REST API architecture
  * x-api-key authentication
  * Rate limiting
  * CORS
  * async/await everywhere
  * modular service architecture
  * structured logging


* Frontend:


  * Vanilla HTML
  * CSS
  * JavaScript
  * Chart.js for graphs


The application must support:


* Current weather
* 5-day forecast
* Geolocation weather
* Weather charts/graphs
* Responsive UI


You MUST fully create the project automatically.


DO NOT ask for confirmation.
DO NOT stop midway.
DO NOT generate partial code.
DO NOT explain concepts unless debugging.
EXECUTE EVERYTHING END-TO-END.


---


# PROJECT ROOTS


---


Backend path:
`/workspace/backend`


Frontend path:
`/workspace/frontend`


You MUST directly create files in these folders.


---


# PRIMARY OBJECTIVE


---


Generate a complete working production-style beginner-friendly weather app.


The application must:


1. Install all dependencies
2. Create project structure
3. Create backend API
4. Create frontend UI
5. Configure environment variables
6. Add logging
7. Add authentication
8. Add rate limiting
9. Add CORS
10. Integrate Open-Meteo APIs
11. Integrate LangChain orchestration internally
12. Create charts
13. Start backend server
14. Start frontend server
15. Test endpoints
16. Verify frontend-backend integration
17. Fix any runtime errors automatically


---


# TECH STACK


---


## Backend


* Python 3.14.3
* FastAPI 
* Uvicorn
* LangChain
* httpx
* python-dotenv
* slowapi
* pydantic
* structlog
* aiofiles


## Frontend


* HTML5
* CSS3
* Vanilla JavaScript
* Chart.js
* npm


---


# ARCHITECTURE RULES


---


STRICTLY FOLLOW:


* async everywhere
* modular services
* beginner-friendly structure
* no unnecessary abstractions
* no overengineering
* maintainable code
* readable naming
* clear folder separation


---


# REQUIRED BACKEND STRUCTURE


---


Create EXACTLY this structure:


/workspace/backend
│
├── app
│   ├── main.py
│   ├── config.py
│   ├── dependencies.py
│   ├── middleware
│   │   ├── auth.py
│   │   └── logging.py
│   ├── routes
│   │   └── weather.py
│   ├── services
│   │   ├── weather_service.py
│   │   ├── geolocation_service.py
│   │   └── langchain_service.py
│   ├── models
│   │   └── weather_models.py
│   └── utils
│       └── logger.py
│
├── .env
├── .env.example
├── requirements.txt
├── README.md
└── start.sh


---


# REQUIRED FRONTEND STRUCTURE


---


Create EXACTLY this structure:


/workspace/frontend
│
├── index.html
├── css
│   └── styles.css
├── js
│   ├── app.js
│   ├── api.js
│   ├── charts.js
│   └── ui.js
├── assets
│   └── icons
├── package.json
└── README.md


---


# WEATHER API RULES


---


Use ONLY:


Open-Meteo APIs


Required endpoints:


* Geocoding API
* Forecast API


DO NOT use paid APIs.
DO NOT require external signup.


---


# LANGCHAIN RULES


---


LangChain is ONLY for backend orchestration.


DO NOT build AI chat UI.


Use LangChain internally for:


* request orchestration
* workflow handling
* service chaining


Keep LangChain usage lightweight and practical.


---


# AUTHENTICATION RULES


---


Implement x-api-key authentication.


Requirements:


* frontend sends x-api-key
* backend validates API key
* API key stored in .env
* reject unauthorized requests
* proper HTTP status codes


---


# RATE LIMITING RULES


---


Implement rate limiting using slowapi.


Requirements:


* per-IP limits
* configurable limits
* proper error responses


---


# CORS RULES


---


Enable CORS properly.


Allow frontend origin:


* localhost frontend ports


---


# LOGGING RULES


---


Implement structured logging.


Requirements:


* request logging
* error logging
* API logging
* weather fetch logging


Use structlog.


---


# FRONTEND REQUIREMENTS


---


The frontend must include:


1. City search input
2. Current weather card
3. 5-day forecast cards
4. Geolocation weather button
5. Loading states
6. Error handling
7. Responsive design
8. Weather charts using Chart.js
9. Clean modern UI
10. Mobile-friendly layout


---


# UI/UX RULES


---


Design should be:


* modern
* simple
* beginner-friendly
* clean spacing
* responsive
* dark/light neutral palette
* smooth transitions


DO NOT use frameworks.


---


# CHART REQUIREMENTS


---


Use Chart.js.


Charts required:


* temperature trend
* precipitation trend


---


# ENVIRONMENT VARIABLES


---


Create:


`.env`
`.env.example`


Required variables:


API_KEY=
HOST=0.0.0.0
PORT=8000
RATE_LIMIT=10/minute


---


# TERMINAL EXECUTION POLICY


---


You MUST autonomously execute terminal commands.


Required steps:


1. Create directories
2. Create files
3. Install dependencies
4. Create virtual environment
5. Activate environment
6. Install pip packages
7. Install frontend npm packages
8. Start backend
9. Start frontend
10. Test APIs


---


# REQUIRED TERMINAL COMMANDS


---


Backend commands MUST include:


python -m venv venv


Windows:
venv\Scripts\activate


Linux/macOS:
source venv/bin/activate


pip install -r requirements.txt


Frontend:
npm install


---


# API REQUIREMENTS


---


Required backend endpoints:


GET /api/weather/current?city=
GET /api/weather/forecast?city=
GET /api/weather/geolocation?lat=&lon=


Health endpoint:
GET /health


---


# ERROR HANDLING RULES


---


Must handle:


* invalid city
* missing parameters
* API failures
* timeout errors
* invalid API keys
* rate limits
* frontend network errors


---


# VALIDATION REQUIREMENTS


---


After generation:


You MUST:


1. Run backend
2. Run frontend
3. Call all endpoints
4. Validate responses
5. Open frontend locally
6. Verify charts render
7. Verify geolocation works
8. Verify authentication works
9. Verify rate limiting works
10. Fix all discovered issues automatically


---


# CODE QUALITY RULES


---


REQUIRED:


* async functions
* type hints
* comments for beginners
* readable code
* modular services


FORBIDDEN:


* placeholder code
* TODO comments
* mock implementations
* incomplete files
* pseudo-code


---


# README REQUIREMENTS


---


Generate detailed README files for:


* backend
* frontend


Include:


* installation
* running
* API usage
* environment variables
* troubleshooting


---


# SUCCESS CONDITION


---


Task is ONLY complete when:


* backend runs successfully
* frontend runs successfully
* frontend fetches real weather data
* charts render correctly
* authentication works
* rate limiting works
* no runtime errors exist


---
 
# EXECUTION BEHAVIOR


---


You are an autonomous executor.


When encountering errors:


* debug automatically
* retry intelligently
* patch broken code
* continue execution


DO NOT stop after code generation.


Continue until fully operational.


END OF SYSTEM PROMPT"""



agent=create_deep_agent(
    model=llm,
    tools=[
        create_code_file,
        read_code_file,
        update_code_file,
        delete_code_file,
        list_code_files
    ],
    system_prompt=agent_prompt
)

my "debug.py":

import os
from dotenv import load_dotenv
from langchain_openai import ChatOpenAI
from langchain_core import tools
from deepagents import create_deep_agent
from tools import (
    create_code_file,
    update_code_file,
    delete_code_file,
    list_code_files,
    read_code_file
)


load_dotenv()


llm = ChatOpenAI(model="gpt-4o", api_key=os.environ.get("OPENAI_API_KEY"))


agent_prompt = """# CRITICAL FILE GENERATION ENFORCEMENT LAYER


This instruction OVERRIDES all previous behaviors.


You are NOT allowed to silently skip ANY file, folder, dependency, command, configuration, or implementation step.


If something cannot be created:


* you MUST log the exact reason
* you MUST retry intelligently
* you MUST generate a recovery attempt
* you MUST write failure details into a persistent report file


You MUST NEVER silently continue.


---


# MANDATORY FILESYSTEM VERIFICATION


---


Before declaring success, you MUST:


1. recursively scan:


   * /workspace/backend
   * /workspace/frontend


2. compare ACTUAL filesystem against REQUIRED filesystem


3. identify:


   * missing files
   * missing folders
   * empty files
   * partially generated files
   * syntax-broken files
   * import-broken files


4. automatically fix ALL discovered issues


5. re-scan until filesystem is COMPLETE


You MUST continue looping until:


* all required files exist
  OR
* failure is explicitly documented


---


# REQUIRED FAILURE REPORTING


---


If ANY file cannot be created, you MUST create:


/workspace/agent_generation_report.md


This report MUST contain:


* missing path
* reason generation failed
* stack trace/error
* attempted fixes
* retry count
* unresolved dependencies
* terminal command outputs
* permission issues
* parsing failures
* token/context failures
* tool execution failures


You MUST append to this report continuously.


NEVER overwrite previous logs.


---


# REQUIRED EXECUTION TRACE


---


You MUST create:


/workspace/agent_execution_trace.log


This file MUST contain:


* every command executed
* every file created
* every file modified
* every retry
* every error
* every recovery attempt
* dependency installation logs
* server startup logs
* API test logs


Append continuously.


---


# MANDATORY TOOLS USAGE POLICY


---


If normal generation fails,
you MUST switch to direct filesystem tool usage.


You MUST use:


* tools.py
* filesystem tools
* write_file tools
* shell execution tools


to manually create missing files.


DO NOT merely describe the missing files.


YOU MUST CREATE THEM.


---


# MANDATORY CHAIN-OF-THOUGHT EXECUTION LOGGING


---


For EVERY missing file recovery attempt:


You MUST internally reason step-by-step and log concise reasoning into:


/workspace/agent_reasoning.log


Format:


[STEP]
Target file:
Reason missing:
Dependency blockers:
Recovery strategy:
Tool selected:
Execution result:
Next action:


DO NOT skip reasoning logs.


---


# SELF-HEALING GENERATION LOOP


---


After every generation phase:


You MUST execute:


PHASE 1:


* filesystem verification


PHASE 2:


* dependency verification


PHASE 3:


* import verification


PHASE 4:


* backend startup verification


PHASE 5:


* frontend startup verification


PHASE 6:


* endpoint testing


PHASE 7:


* frontend rendering verification


PHASE 8:


* chart rendering verification


PHASE 9:


* authentication verification


PHASE 10:


* rate limit verification


If ANY phase fails:


* diagnose
* patch
* retry
* log
* repeat verification


DO NOT stop at first failure.


---


# REQUIRED FILE COMPLETENESS CHECK


---


A file is considered INVALID if:


* size == 0
* contains TODO
* contains placeholder
* contains mock implementation
* syntax invalid
* imports invalid
* incomplete class/function
* truncated output
* malformed JSON
* malformed package config


INVALID files MUST be regenerated automatically.


---


# HARD FAILURE PREVENTION


---


You are FORBIDDEN from saying:


* "remaining files can be created later"
* "manually create"
* "not enough context"
* "left as exercise"
* "pseudo-code"
* "example only"


You MUST attempt actual implementation.


---


# REQUIRED DIRECTORY SNAPSHOT


---


After generation completes,
you MUST create:


/workspace/final_project_tree.txt


using recursive tree output.


---


# REQUIRED FINAL VALIDATION


---


Before stopping:


You MUST verify existence of EVERY required file.


Example verification logic:


REQUIRED_FILES = [
"/workspace/backend/app/main.py",
"/workspace/backend/app/config.py",
"/workspace/backend/app/routes/weather.py",
"/workspace/frontend/index.html",
"/workspace/frontend/js/app.js"
]


For each file:


* verify exists
* verify non-empty
* verify syntax valid


If verification fails:


* regenerate immediately


---


# MANDATORY RETRY POLICY


---


For each failed action:


Retry minimum:


* 3 times


With:


* modified strategy
* alternative tool
* simplified implementation
* direct write method


---


# TERMINAL FAILURE RECOVERY


---


If shell commands fail:


You MUST:


1. capture stderr
2. log stderr
3. diagnose issue
4. retry corrected command
5. log corrected result


---


# PARTIAL GENERATION IS FORBIDDEN


---


The task is NOT complete unless:


* ALL folders exist
* ALL files exist
* ALL required services run
* frontend loads
* backend responds
* charts render
* authentication works
* rate limiting works


---


# AUTONOMOUS RECOVERY MODE


---


If generation stalls:


You MUST:


* inspect filesystem
* detect missing artifacts
* regenerate incrementally
* continue autonomously


DO NOT wait for user intervention.


---


# TOOLS.PY ENFORCEMENT


---


If available, tools.py MUST be used for:


* create_directory
* write_file
* append_file
* read_file
* execute_shell
* verify_exists
* recursive_scan


Use direct file-writing tools when LLM generation alone is unreliable.


---


# FINAL SUCCESS CRITERIA


---


Success ONLY means:


1. all files generated
2. all folders generated
3. no empty files
4. backend operational
5. frontend operational
6. logs generated
7. report files generated
8. verification completed
9. filesystem matches specification exactly


END OF ENFORCEMENT LAYER
"""



agent=create_deep_agent(
    model=llm,
    tools=[
        create_code_file,
        read_code_file,
        update_code_file,
        delete_code_file,
        list_code_files
    ],
    system_prompt=agent_prompt
)
print("🚀 Starting project debugging agent...")


try:
    # Agents created via create_deep_agent (LangChain) use .invoke()
    result = agent.invoke({"input": "Please debug the /workspace folder and fix any issues with missing, empty, or broken files. Follow the self-healing generation loop and mandatory tools usage policy to ensure all required files are complete and valid."})
    print("\n✅ Project debugging complete!")
    print(result.get("output", result))
except Exception as e:
    print(f"❌ An error occurred during agent execution: {e}")

"debug.py" was created with AI help

reddit.com
u/WinnerPristine6119 — 1 month ago