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Documentation Index

Fetch the complete documentation index at: https://docs.medera.info/llms.txt

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Canvas nodes resolve variables using {{scope.path}} template syntax. The runtime ExecutionContext.resolveVariable() is recursive and works across arrays, objects, and strings.

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Scopes

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workflow.input

Input parameters passed to the workflow at execution start. Frozen — cannot be mutated. 
{{input.patient_id}}
{{input.deployment_id}}
{{input.clinical_context.chief_complaint}}

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state.<name>

State variables declared on the workflow’s start node. Initialized from state_variables.defaultValue. Mutable during execution. 
{{state.phq9_score}}
{{state.attempts}}
A transform node can write to state: 
transform:
  output_to: state.phq9_score
  template: "{{nodes.intake_1.output.screeners.phq9.total}}"

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nodes.<id>.output

Output of a previously-executed node. Available as soon as the source node completes. 
{{nodes.intake_1.output.transcript}}
{{nodes.intake_1.output.tasks[0].title}}

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runtime.context

Runtime context for the current execution.
PathValue
runtime.execution_idagent_workflow_executions.id
runtime.organization_idTenant ID (RLS-enforced)
runtime.workflow_idagent_workflows.id
runtime.workflow_versionVersion executed
runtime.trigger_typecanvas_test / api / scheduled / webhook

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tenant.secret

Read-only access to tenant-configured secrets stored in your secret store (SSM / Vault). Resolved at execution time, never inlined into the workflow definition. 
{{tenant.secret.epic_oauth_client_id}}
{{tenant.secret.aetna_payer_api_key}}

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Type safety

Variable references are type-checked against the source node’s output schema at design time. A string source cannot be assigned to a number sink.