Despite the efficacy of psychological interventions in people with psychosis few patients receive them, and none of them were personalised. PERMEPSY aims to integrate new technologies such as harmonisation of data and machine learning for providing a prototype platform that will allow to personalise a psychological treatment named Metacognitive Training (MCT). The project is divided into two phases. The first one consists of a systematic review of the literature and the harmonisation of previous data (aprox. 500 patients with sociodemographic, clinical, cognitive and meta-cognitive, and biomarkers information) to develop a prototype platform that will predict personalised treatment (P-MCT). The second phase will validate the P-MCT compared with classical MCT in a prospective pilot clinical trial study in 5 countries: Poland, Germany, France, Chile and Spain (including 252 patients). PERMEPSY project will develop an open platform for clinicians to predict the response to MCT and recommend a personalised MCT treatment.