Jev handles local harness routing for Claude Code, Codex and Opencode
Using Jev with a deterministic hook, the author routes tasks by difficulty: mechanical work to Haiku, intelligent work to Opus sub-agents, and long-running implementation to an external harness.
Jev solved local harness/model routing I use a combination of Claude Code, Codex and Opencode as my local agentic stack and routing to other harnesses was always enforced in the system prompt/rules With a deterministic hook that Claude Code can decide before delegation, Jev helps to route to the right harness/model based on the task, and it's pretty accurate based on the intensity/intelligence of the task > Mechanical tasks get routed to Haiku > Intelligent ones to Opus sub-agents > Long-running implementation work to external harness