# Runtime
<a name="sam-property-graphqlapi-function-runtime"></a>

The runtime of your pipeline resolver or function. Specifies the name and version to use.

## Syntax
<a name="sam-property-graphqlapi-function-runtime-syntax"></a>

To declare this entity in your AWS Serverless Application Model (AWS SAM) template, use the following syntax.

### YAML
<a name="sam-property-graphqlapi-function-runtime-syntax-yaml"></a>

```
Name: {{String}}
Version: {{String}}
```

## Properties
<a name="sam-property-graphqlapi-function-runtime-properties"></a>

`Name`  <a name="sam-graphqlapi-function-runtime-name"></a>
The name of the runtime to use. Currently, the only allowed value is `APPSYNC_JS`.  
*Type*: String  
*Required*: Yes  
*CloudFormation compatibility*: This property is passed directly to the `[Name](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-appsync-functionconfiguration-appsyncruntime.html#cfn-appsync-functionconfiguration-appsyncruntime-name)` property of an `AWS::AppSync::FunctionConfiguration AppSyncRuntime` object.

`Version`  <a name="sam-graphqlapi-function-runtime-version"></a>
The version of the runtime to use. Currently, the only allowed version is `1.0.0`.  
*Type*: String  
*Required*: Yes  
*CloudFormation compatibility*: This property is passed directly to the `[RuntimeVersion](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-appsync-functionconfiguration-appsyncruntime.html#cfn-appsync-functionconfiguration-appsyncruntime-runtimeversion)` property of an `AWS::AppSync::FunctionConfiguration AppSyncRuntime` object.

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for AWS Serverless Application Model. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query serverless-application-model` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).