# Monitor monthly cost index spikes for agent inflation alerts

**Use case:** 

Monitor CBS building-cost index month-on-month changes and flag spikes — structured feed for agent inflation-alert and cost-monitoring loops.

## Input

```json
{
  "component": "totaal",
  "maxResults": 50,
  "berekenMaandTrend": true,
  "alertDrempelPercentage": 2,
  "signaleerRecordpunten": false,
  "includeGww": false
}
```

## Output

```json
{
  "periodeLabel": {
    "label": "Month"
  },
  "component": {
    "label": "Component"
  },
  "indexwaarde": {
    "label": "Index value (2021=100)"
  },
  "yoyPercentage": {
    "label": "YoY change %"
  },
  "momPercentage": {
    "label": "MoM change %"
  },
  "drempelAlert": {
    "label": "Threshold alert"
  },
  "isHoogstePunt": {
    "label": "Record high"
  },
  "isLaagstePunt": {
    "label": "Record low"
  }
}
```

## About this Actor

This example demonstrates how to use [NL Building Cost Index Monitor (CBS)](https://apify.com/codeclouds/nl-bouwkosten-index-monitor.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/codeclouds/nl-bouwkosten-index-monitor.md) to learn more, explore other use cases, and run it yourself.


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This Task's input is already configured above — use it as-is rather than inventing a new one.

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For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/codeclouds/nl-bouwkosten-index-monitor.md

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).