Function evaluateInputGuardrails

Evaluate user input through all registered guardrails.

Runs guardrails in sequence, allowing each to modify or block the input. If any guardrail returns GuardrailAction.BLOCK, evaluation stops immediately and the blocked result is returned.

Example

const outcome = await evaluateInputGuardrails(
  [contentFilter, piiRedactor],
  userInput,
  { userId: 'user-123', sessionId: 'session-abc' }
);

if (outcome.evaluation?.action === GuardrailAction.BLOCK) {
  // Input was blocked - return error stream
  yield* createGuardrailBlockedStream(context, outcome.evaluation);
  return;
}

// Use sanitized input for orchestration
const cleanInput = outcome.sanitizedInput;
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