Streaming Hub 0.2

Data and context

Use event fields, run-local values and macro inputs deliberately.

Alpha
ConceptUpdated 2026-10-22

A run carries event data and runtime values. Each field has a declared path; use Insert Field and Encyclopedia rather than assuming that every signal supplies the same fields.

Common sources

RootMeaning
event.*The normalized event and supported contract fields
payload.*Source payload where the action or signal exposes it
runtime.*Values belonging to the current run
vars.*Current project variables
input.*Inputs supplied to the current macro
stats.*Supported statistic values

Runtime variables

Configure an action's output target under runtime.* to use its result in a later step. Use a run-local value when parallel runs must not overwrite a shared project variable.

A missing field differs from an empty value. Test missing and boundary cases, then inspect the before/after data captured by Runs. Captures are bounded and may omit data.

See Data paths.