Migration comparison
DeepSeek Harness vs Claude Code
DeepSeek Harness is a composable harness, while Claude Code is an integrated coding-agent product. Migration is not a one-to-one package swap.
Architecture first
Map model access, tool protocols, instruction files, skills, session state, sandbox behavior, permissions, hooks, and CI before choosing a target.
Plan coexistence
A staged trial preserves the existing workflow while validating Cordis plugins. Avoid moving credentials or broad permissions until the boundary is understood.
Measure migration effort
List features that map directly, need adapters, or have no equivalent. Test real tasks and rollback paths.