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---
lang: en
title: 'API docs: metadata.metadatainspector.getparametermetadata'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/strongloop/loopback-next/tree/master/packages/metadata
permalink: /doc/en/lb4/apidocs.metadata.metadatainspector.getparametermetadata.html
---
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[Home](./index.md) > [@loopback/metadata](./metadata.md) > [MetadataInspector](./metadata.metadatainspector.md) > [getParameterMetadata](./metadata.metadatainspector.getparametermetadata.md)
## MetadataInspector.getParameterMetadata() method
Get the metadata associated with the given key for a parameter of a given method by index
<b>Signature:</b>
```typescript
static getParameterMetadata<T>(key: MetadataKey<T, ParameterDecorator>, target: Object, methodName: string, index: number, options?: InspectionOptions): T | undefined;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| key | [MetadataKey](./metadata.metadatakey.md)<!-- --><T, ParameterDecorator> | Metadata key |
| target | Object | Class for static methods or prototype for instance methods |
| methodName | string | Method name. If not present, default to '' to use the constructor |
| index | number | Index of the parameter, starting with 0 |
| options | [InspectionOptions](./metadata.inspectionoptions.md) | Options for inspection |
<b>Returns:</b>
T \| undefined