In the timespan of 2 139 days beginning January 9, 2019, data shows proto.io passed 4 accessibility tests. Proto.io was online 4 times from the complete assessments conducted, last active on March 9, 2024, responding with a 200 status code. Based on inspections made as of November 18, 2024, there were no instances of inoperability on proto.io. Based on the replies received, it is confirmed that there were no error responses as of November 18, 2024. Proto.io's reply time was 0.845 seconds on March 9, 2024, in contrast to an average of 0.803 seconds.