CIRCLE-NMA is a collaborative individual participant data (IPD) network meta-analysis research initiative focused on evaluating and comparing the effectiveness, safety, and patient satisfaction associated with different cervical ripening methods for induction of labour (IOL). We aim to understand how individual patient characteristics influence outcomes and to ensure the integrity of evidence by assessing the trustworthiness of all eligible clinical trials. Our goal is to inform better, more personalized approaches to cervical ripening during IOL worldwide.