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node-handlers

Node handlers​

  • ACTION: render parameters from context, execute external command/action with circuit breaker and timeout, map response back to variables.
  • FUNCTION: call a registered Python function with rendered inputs, capture result, map outputs to variables.
  • SET_VARIABLE: render an expression and set var.<name>.
  • FOREACH: iterate over rendered items; per-iteration context exposes item, loop_variable, _index, _batch; supports batching and concurrency configuration.
  • LOG: emit structured log from template.
  • AGENT: invoke an LLM/tool-calling agent with constraints and instructions.
  • START/END: graph sentinels; END marks workflow completed.
  • USER_INTERACTION: create a task (form/approval/LLM/bulk), set node to WAITING, and return a resume payload.