@mdlahfir uses a deterministic hook so Claude Code can ask Jev where to delegate before it hands work off. They say mechanical tasks go to Haiku, intelligent ones to Opus sub-agents, and long-running implementation to an external harness (Claude Code, Codex, or Opencode).

Lahfir (@mdlahfir) published this on 2026-09-16. @mdlahfir uses a deterministic hook so Claude Code can ask Jev where to delegate before it hands work off. They say mechanical tasks go to Haiku, intelligent ones to Opus sub-agents, and long-running implementation to an external harness (Claude Code, Codex, or Opencode). How Jev or TypeSafe is used, in the post's own words: “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 ba…” The post does not name a separate audience. It is for people reading what @mdlahfir shows here (it includes media).