full-stack-coding-agent

Codrr: CrewAI-powered Full Stack Project Generator

Codrr is a CrewAI-powered agent that turns natural-language requirements into complete projects. Describe what you want to build, and a Senior Full Stack Developer agent generates the files and saves them to output/.

Sample Run

This walkthrough uses the prompt:

Build a simple HTML Page for Sarvan Kumar He is a fullstack dev

Run the agent with python run.py, paste the prompt above, and you should see output similar to the screenshots below.

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1. Enter Your Requirement

The crew picks up your prompt and starts the task with the full generation instructions.

Figure 1: User enters a project requirement and the crew begins execution.

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2. Agent Starts Working

The Senior Full Stack Developer agent receives the task and begins calling the File Writer tool. First file: index.html.

Figure 2: The agent begins generating project files.

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3. More Files Are Written

The agent continues generating project files including styles.css, package.json, requirements.txt, and README.md.

Figure 3: Additional files are generated through File Writer tool calls.

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4. Tools Complete Successfully

Each tool call confirms the file was saved under output/.

Figure 4: Generated files are successfully written to disk.

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5. Agent Final Answer

The agent summarizes what was created:

File	Description
index.html	Portfolio page
styles.css	Styles
package.json	Project metadata (sarvan-portfolio)
requirements.txt	Dependency file
README.md	Generated project readme

Figure 5: The agent provides a summary of generated files.

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6. Task And Crew Complete

Execution finishes and the script prints the success message.

Figure 6: Crew execution completes successfully.

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7. Generated Output

Figure 7: Final generated website output.

Generated files land in:

output/
├── index.html
├── styles.css
├── package.json
├── requirements.txt
└── README.md

How It Works

User Requirement
        ↓
Crew (Agent + Task)
        ↓
LLM (OpenRouter)
        ↓
FileWriterTool
        ↓
output/

1. You enter a project requirement at the prompt.
2. A task is created with production-ready coding rules.
3. The coder agent plans the project and writes files through the File Writer tool.
4. When the crew finishes, the project is available in output/.

Quick Start

Prerequisites

• Python 3.10+
• An OpenRouter API key

Install

cd agents
python -m venv .venv

# Windows
.venv\Scripts\activate

# macOS / Linux
source .venv/bin/activate

pip install -r requirements.txt

Configure

Create a .env file:

OPENROUTER_API_KEY=your_openrouter_api_key_here
MODEL=openrouter/openai/gpt-4o-mini
BASE_URL=https://openrouter.ai/api/v1
TEMPERATURE=0.2

Run

python run.py

Project Structure

agents/
├── run.py
├── agents.py
├── tasks.py
├── tools.py
├── assets/
├── requirements.txt
├── .env
└── output/

Customization

• Change model via .env
• Adjust agent behavior in agents.py
• Modify generation rules in tasks.py
• Add new tools in tools.py

Dependencies

• CrewAI
• crewai_tools
• LiteLLM
• python-dotenv

Troubleshooting

• Authentication errors → Verify API key.
• Empty output → Use a better model or more detailed prompt.
• Files not saved → Ensure File Writer tool is called.

License

MIT License

Copyright (c) 2026 full-stack-coding-agent

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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