[Home](./index.md) > [fastify-metrics](./fastify-metrics.md) > [IMetricsPluginOptions](./fastify-metrics.imetricspluginoptions.md) ## IMetricsPluginOptions interface Metrics plugin config **Signature:** ```typescript export interface IMetricsPluginOptions ``` ## Properties

Property	Modifiers	Type	Description
[clearRegisterOnInit](./fastify-metrics.imetricspluginoptions.clearregisteroninit.md)		boolean	Clears the prom-client global registry before adding metrics. Default to `false`
[defaultMetrics](./fastify-metrics.imetricspluginoptions.defaultmetrics.md)		[IDefaultMetricsConfig](./fastify-metrics.idefaultmetricsconfig.md)	Default prom-client metrics config. Collect prometheus recommended and node.js specific metrics like event loop lag.
[endpoint](./fastify-metrics.imetricspluginoptions.endpoint.md)		string \| null \| RouteOptions	Endpoint to expose metrics in prometheus format. `null` - disables metrics exposure
[name](./fastify-metrics.imetricspluginoptions.name.md)		string	Plugin name that will be registered in fastify instance.
[promClient](./fastify-metrics.imetricspluginoptions.promclient.md)		typeof client \| null	PromClient instance to override default internal promClient
[routeMetrics](./fastify-metrics.imetricspluginoptions.routemetrics.md)		[IRouteMetricsConfig](./fastify-metrics.iroutemetricsconfig.md)	Per route metrics config. Collect response time metric on requests