# Create a Product

[API Reference](https://docs.credyt.ai/api/products-create.md)

The product catalogue is a core concept in Credyt. Before sending usage, you’ll need to add your products, which can be priced in multiple ways:

* **Event Type** - what product event or outcome are you billing for?
* **Currency or asset** - do you want to price in fiat or a custom asset such as tokens or minutes?
* **Usage type** - are you charging per occurrence (unit) or volume (e.g. workload size)?
* **Billing Dimensions** - do you price differently based on characteristics of the usage such as the AI model used?

To get familiar with Credyt you can create products directly using our [Create Product API](https://docs.credyt.ai/api/products-create.md). This lets you validate your integration and usage flow before building out your full product catalogue.

Start by defining a basic product with a default rate plan. This product will serve as the reference for sending usage events and testing wallet deductions.

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### Unit-based pricing[​](#unit-based-pricing "Direct link to Unit-based pricing")

Use unit-based pricing to charge per occurrence of a particular event or outcome. In this example, we charge $0.50 per video that is promoted via the Glitch Marketplace:

* REST API
* TypeScript SDK
* Python SDK

POST https\://api.credyt.ai/products

```json
{
  "name": "Glitch Video",
  "code": "glitch_video_std",
  "prices": [
    {
      "name": "Video Promotion",
      "type": "usage_based",
      "billing_model": {
        "type": "real_time"
      },
      "usage_calculation": {
        "event_type": "video_promoted",
        "usage_type": "unit",
        "source_reference_field": "video_id"
      },
      "pricing": [
        {
          "asset": "USD",
          "values": [
            {
              "unit_price": 0.5
            }
          ]
        }
      ]
    }
  ],
  "publish": true
}

```

**Response**

```json
{
  "id": "prp_4e28n8kk41931f5yt5em49ecw7",
  "code": "glitch_video_std",
  "version": 1,
  "status": "published",
  "is_default": true
}

```

```typescript
await client.products.create({
  name: "Glitch Video",
  code: "glitch_video_std",
  prices: [
    {
      name: "Video Promotion",
      type: "usage_based",
      billingModel: {
        type: "real_time",
      },
      usageCalculation: {
        eventType: "video_promoted",
        usageType: "unit",
        sourceReferenceField: "video_id",
      },
      pricing: [
        {
          asset: "USD",
          values: [
            {
              unitPrice: 0.5,
            },
          ],
        },
      ],
    },
  ],
  publish: true,
});

```

[View full sample on GitHub](https://github.com/credyt/sdk-ts/blob/main/samples/productsCreateSample.ts#L227)

**SDK response object**

```typescript
const response = {
  id: "prp_4e28n8kk41931f5yt5em49ecw7",
  code: "glitch_video_std",
  version: 1,
  status: "published",
  isDefault: true,
};

```

```python
response = client.products.create(
    body={
    "name": "Glitch Video",
    "code": "glitch_video_std",
    "prices": [
      {
        "name": "Video Promotion",
        "type": "usage_based",
        "billing_model": {
          "type": "real_time",
        },
        "usage_calculation": {
          "event_type": "video_promoted",
          "usage_type": "unit",
          "source_reference_field": "video_id",
        },
        "pricing": [
          {
            "asset": "USD",
            "values": [
              {
                "unit_price": 0.5,
              },
            ],
          },
        ],
      },
    ],
    "publish": True,
  },
)

```

[View full sample on GitHub](https://github.com/credyt/sdk-python/blob/main/samples/products_create_usage_based_price.py#L20)

**SDK response object**

```python
response = {
  "id": "prp_4e28n8kk41931f5yt5em49ecw7",
  "code": "glitch_video_std",
  "version": 1,
  "status": "published",
  "is_default": True,
}

```

Versioning

Products are automatically versioned so you can safely make changes to your pricing without impacting existing customers.