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A provider tells LStack how workers reach a model service. It contains the endpoint, authentication mode, model configuration, capability information, and concurrency limits used when workers are created and scheduled.

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Provider responsibilities

  • Identify the model endpoint and authentication method
  • Define the model used by workers
  • Limit concurrent model work
  • Validate connectivity and relevant capabilities
  • Provide credentials to authorized workers at assignment time

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Current execution compatibility

Current qualified workers run Claude Code and require a provider that supports the Anthropic Messages API shape. Local or self-hosted compatible endpoints and supported cloud configurations can be represented as provider profiles.
A saved provider is not automatically compatible with every worker engine. Compatibility depends on the engine and API surface supported by the provider.

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Capacity

Provider concurrency limits and worker policy work together. Creating additional workers does not increase the capacity of the underlying model endpoint.

Workers

Create and operate execution units backed by a configured provider.