Fixes#5979 — guardrails are now enforced as hard constraints.
Two bugs fixed:
1. Multiple guardrails skipped re-validation of earlier guardrails after retry.
When guardrail N failed and the agent retried, the new output was only
checked against guardrail N onward. Earlier guardrails (0..N-1) were not
re-evaluated, allowing retry outputs to silently violate them.
Fix: refactored _invoke_guardrail_function into _run_guardrails which
runs ALL guardrails from the beginning on each retry attempt.
2. Negative guardrail_max_retries bypassed guardrails entirely.
Setting guardrail_max_retries to a negative value made the guardrail
loop execute zero iterations, letting output pass without validation.
Fix: added ge=0 constraint to the guardrail_max_retries field.
Co-Authored-By: João <joao@crewai.com>
c074b05002