# Pay per event example (`mhamas/pay-per-event-example`) Actor

This is an example pay-per-event Actor. When running it, you don't pay for the underlying platform usage, just for the Actor start event, and trivia facts it generates.

- **URL**: https://apify.com/mhamas/pay-per-event-example.md
- **Developed by:** [Matej Hamas](https://apify.com/mhamas) (community)
- **Categories:** Developer tools
- **Stats:** 16 total users, 0 monthly users, 100.0% runs succeeded, 3 bookmarks
- **User rating**: No ratings yet

## Pricing

from $100.00 / 1,000 actor starts

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

### Example pay-per-event Actor generating cool trivia facts

This actor features new Actor pay-per-event model. You can ask it to generate trivia facts about various popular movies (see below).
When running this Actor, you do not pay for the underlying platform usage for the run, just for a specific events, such as starting
the Actor, or generating a trivia fact from a specific category (see the pricing below).

In the run options of the run, you can also specify the maximum cost you are willing to pay for a run, in US dollars.

#### Pricing

| Event                     | Cost  |
| ------------------------- | ----- |
| Actor start               | $0.1  |
| Star wars trivia          | $0.2  |
| Harry Potter trivia       | $0.3  |
| Lord of the Rings trivia  | $0.5  |

#### Input

The input is array of object in form

```
{
    "name": TRIVIA_NAME,
    "count": COUNT
}
```

where `TRIVIA_NAME` can be anything from

- lord-of-the-rings
- harry-potter
- star-wars
  and `COUNT` can be any number up to 10.

The trivia are generated in the order provided in the input.

**Example input**

```
[
    {
        "name": "lord-of-the-rings",
        "count": 1
    },
    {
        "name": "harry-potter",
        "count": 5
    },
    {
        "name": "star-wars",
        "count": 10
    }
]
```

#### Output

The trivia facts the Actor generates are stored in a default dataset. You can also read them in logs, together with charges that have been performed.

# Actor input Schema

## `trivia` (type: `array`):

Tell the Actor what kind of cool trivia you'd like to generate. You can generate trivia from lord-of-the-rings, harry-potter, or star-wards. See the prefilled input for example.

## Actor input object example

```json
{
  "trivia": [
    {
      "name": "lord-of-the-rings",
      "count": 1
    },
    {
      "name": "harry-potter",
      "count": 5
    },
    {
      "name": "star-wars",
      "count": 10
    }
  ]
}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "trivia": [
        {
            "name": "lord-of-the-rings",
            "count": 1
        },
        {
            "name": "harry-potter",
            "count": 5
        },
        {
            "name": "star-wars",
            "count": 10
        }
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("mhamas/pay-per-event-example").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "trivia": [
        {
            "name": "lord-of-the-rings",
            "count": 1,
        },
        {
            "name": "harry-potter",
            "count": 5,
        },
        {
            "name": "star-wars",
            "count": 10,
        },
    ] }

# Run the Actor and wait for it to finish
run = client.actor("mhamas/pay-per-event-example").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "trivia": [
    {
      "name": "lord-of-the-rings",
      "count": 1
    },
    {
      "name": "harry-potter",
      "count": 5
    },
    {
      "name": "star-wars",
      "count": 10
    }
  ]
}' |
apify call mhamas/pay-per-event-example --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,mhamas/pay-per-event-example"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/pzIdy8edkinhiEyaG/builds/aFnt1rtbbrqJbzBDD/openapi.json