Jr. This document specifies Project Atlas, a backbone instrument in which a pipeline of autonomous software agents continuously holds a constellation of live web endpoints under measurement, attestation, and remediation, with every agent behavior conditioned and recorded under the Cognitive Behavioral Provenance and Integrity (CBPI) framework [I-D.reilly-cbpi]. Atlas defines eight agent roles (Resolver, Reachability, Integrity, Provenance, Conditioning Authority, Drift, Functional Behavior Assessment, and Sentinel), a hash-linked Operant Provenance Chain of epochs, hash-linked Reinforcement Event Records, a per-agent Behavioral Drift Index, and a dual authority model in which the instrument operates either fully autonomously or under human oversight through an operator decision queue. A live reference instrument implementing this document is deployed and publicly reachable.