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charter-core

Internal runtime package for Charter. It owns workflow schema validation, step execution, run state, event models, artifact stores, and runtime adapters used by the CLI, daemon, and gateway-facing worker code.

charter-core is not a supported embedding SDK. The package root intentionally does not export runner lifecycle helpers such as start, resume, or submit_input; Charter's supported product interfaces are the CLI and the gateway/control plane.

Use This Package When

  • You are developing Charter runtime packages such as charter-cli.
  • You need shared run protocol, event, state, or storage models inside Charter infrastructure.

For workflow authoring and local execution, use charter-cli. For custom provider or tool integrations, use charter-integration-sdk.

Internal Boundaries

  • charter-core depends on charter-integration-sdk because the runner consumes and enforces the integration contract.
  • charter-core must not depend on the CLI or provider implementations.
  • HTTP clients, terminal UX, and provider-specific code live outside this package.

Submodule Map

  • runner: workflow start/resume/input execution internals
  • runtime: managed run lifecycle used by daemon mode
  • schema: workflow plan and form schema models
  • state, event_store: persisted run and stream contracts
  • storage, stores: project storage configuration and built-in adapters

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