> For the complete documentation index, see [llms.txt](https://tomatopy.pizza/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tomatopy.pizza/docs/readme-1/installation.md).

# Getting Started

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## Getting Started

\=======

## Installation Guide

> > > > > > > 048be57787cae533a398402c6cd4191351feef8d

This guide will help you start using the PizzaStack HTTP API. There is nothing to install -- PizzaStack is a REST API you call over HTTP from any language or tool.

### Prerequisites

* An HTTP client (Python `requests`, `curl`, or any language with HTTP support)
* A PizzaStack API key (sign up at [tomatopy.pizza](https://tomatopy.pizza))

### Step 1: Get Your API Key

Sign up at [tomatopy.pizza](https://tomatopy.pizza) to receive your API key. You will use this key in the `X-API-Key` header on every request.

### Step 2: Choose Your HTTP Client

PizzaStack works with any HTTP client. Here are common options:

* **Python**: `requests` library (`pip install requests`)
* **JavaScript**: `fetch` or `axios`
* **Command line**: `curl`

### Step 3: Set Up a Session ID

Every request to PizzaStack requires an `X-Session-ID` header. A session groups related objects together (tomatoes, sauces, pizzas). Generate any unique string as your session ID -- a UUID works well.

```python
import uuid

session_id = str(uuid.uuid4())
```

### Your First Request

Here is a complete example that acquires a tomato using Python:

```python
import requests
import uuid

API_BASE = "https://api.tomatopy.pizza/v1"
HEADERS = {
    "Content-Type": "application/json",
    "X-API-Key": "your-api-key",
    "X-Session-ID": str(uuid.uuid4())
}

# Acquire a tomato
response = requests.post(f"{API_BASE}/tomato/acquire", headers=HEADERS, json={
    "variety": "San Marzano",
    "ripeness": 0.8,
    "weight": 150
})

print(response.status_code)  # 200
print(response.json())       # {"id": "tom_abc123", "variety": "San Marzano", ...}
```

Or using `curl`:

```bash
curl -X POST https://api.tomatopy.pizza/v1/tomato/acquire \
  -H "Content-Type: application/json" \
  -H "X-API-Key: your-api-key" \
  -H "X-Session-ID: your-session-id" \
  -d '{"variety": "San Marzano", "ripeness": 0.8, "weight": 150}'
```

### Verification

To verify your API key is working, make a request and check for a `200` status code:

```python
response = requests.post(f"{API_BASE}/tomato/acquire", headers=HEADERS, json={
    "variety": "Roma",
    "ripeness": 0.7,
    "weight": 100
})

if response.status_code == 200:
    print("API key is valid!")
else:
    print(f"Error: {response.status_code} - {response.json()}")
```

### Troubleshooting

#### Common Issues

1. **401 Unauthorized**
   * Verify your `X-API-Key` header is set correctly
   * Check that your API key has not expired
2. **400 Bad Request**
   * Ensure your JSON body includes all required fields
   * Check that `Content-Type: application/json` is set
3. **Missing X-Session-ID**
   * Every request requires the `X-Session-ID` header
   * Use a consistent session ID for related operations

#### Getting Help

If you encounter any issues:

* Check our [API documentation](https://tomatopy.pizza/docs)
* Join our [Discord Community](https://discord.gg/tomatopy)
* Visit our [Stack Overflow Tag](https://stackoverflow.com/questions/tagged/tomatopy)

### Next Steps

* [Quick Start Guide](/docs/readme.md)
* [Basic Concepts](/docs/readme-1/basic-concepts.md)
* [Core API Endpoints](/docs/core-modules.md)


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