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IntroductionCustom container images Defining ImagesUsing existing container imagesFast pull from registryGPUs and other resources GPU accelerationUsing CUDA on ModalReserving CPU and memoryScaling out Scaling outInput concurrencyBatch processingJob queuesDynamic batching (beta)Multi-node clusters (beta)Deployment Apps, Functions, and entrypointsManaging deploymentsInvoking deployed functionsContinuous deploymentRunning untrusted code in FunctionsModal Sandboxes SandboxesRunning commandsNetworking and securityFile accessSnapshotsModal NotebooksSecrets and environment variables SecretsEnvironment variablesScheduling and cron jobsWeb endpoints Web endpointsStreaming endpointsWeb endpoint URLsRequest timeoutsProxy Auth TokensNetworking TunnelsProxies (beta)Cluster networkingData sharing and storage Passing local dataVolumesStoring model weightsCloud bucket mountsDictsQueuesDataset ingestionPerformance Cold start performanceMemory SnapshotHigh-performance LLM inferenceGeographic latencyReliability and robustness Failures and retriesPreemptionTimeoutsGPU healthTroubleshootingSecurity and privacyIntegrations Using OIDC to authenticate with external servicesConnecting Modal to your Datadog accountConnecting Modal to your OpenTelemetry providerOkta SSOCustom SAML SSOSlack notifications (beta)Workspace & account settings WorkspacesEnvironmentsModal user account setupService usersBillingOther topics Feature maturityJavaScript/Go SDKsModal 1.0 migration guideFile and project structureDeveloping and debuggingDeveloping Modal code with LLMsJupyter notebooksAsynchronous API usageGlobal variablesRegion selectionContainer lifecycle hooksParametrized functionsS3 Gateway endpointsGPU Metrics

Modal SDKs for JavaScript and Go (Beta)

Modal also provides SDKs that enable using Modal Functions and Sandboxes from JavaScript/TypeScript and Go projects.

While Python is the primary language for building Modal applications and implementing Modal Functions, these SDKs enable use cases like:

  • Using Sandboxes in JS/Go projects, to safely execute arbitrary commands, run untrusted user code, or as a safe environment for AI agents.
  • Directly calling Modal Functions without having to go through a web endpoint.
  • Interacting with Modal resources like Volumes, Secrets, Queues, etc. directly from JS/Go.

We’re working towards feature parity with the main Modal Python SDK, although defining Modal Functions will likely remain exclusive to Python.

Installation 

For installation instructions, see the READMEs for JavaScript and Go on GitHub.

JavaScript/TypeScript 

The modal package is distributed via npm. See the JS API reference documentation for details.

Simple JavaScript Example 

There are many more examples available on GitHub.

Go 

The modal-go package is installed via go get. See the Go API reference documentation for details.

Simple Go Example 

There are many more examples available on GitHub.

Support 

The JS and Go Modal SDKs are in active development, and we love to hear your feedback. If you have questions or suggestions, please reach out on the Modal Community Slack.