| Root package | JevClient, SystemOneRequest, JevJudge, JevExecution, JevGuardrail | Client, review definitions |
| example | JevToolSelectionMiddleware, JevAutoModeMiddleware, JevModelRouterMiddleware | Execution modes |
| evaluation | JevTrace, JevTraceMetric, JevTraceEvaluator, JevTraceEvaluationMiddleware, JevTraceRunner, JevEvaluator, JevEvaluationRunner, JevTextBackend | Trace evaluation |
| context | JevContextCompactor, JevContextArchive, FileJevContextArchive, StoreJevContextArchive | Context compaction |
| supervision | JevTaskSupervisor, JevSupervisionMiddleware, SupervisionEvidence | Continuous supervision |
| routing | JevPhaseRouting, JevRouteCatalog | Stage routing |
| evidence | JevPassage, JevEvidenceProcessor, JevEvidenceTool | Retrieved evidence |
| review | JevReviewInput, JevCodeReviewer, JevCodeReviewTool, ReviewRegions | Code review |
| browser | JevBrowserSession, JevBrowserNavigator, JevBrowserReadTool, JevPlaywrightSession | Read-only browser |
| integration | JevResponseMiddleware, JevKnowledge, JevKnowledgeTool | Answer review, Knowledge adapter |
| application | JevCandidateSelector, JevCustomerSupport, JevRag, JevDraftPipeline, JevSupervisor, JevContextPlanner, JevMemoryGate, JevStageRouter, JevTeamPlanner, JevBrowserPlanner | Application components |