Name: Lahfir's post on X, curated on eChai
Uploaded: 2026-09-17T01:31:37+05:30
Description: 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...

Founder Notes

Curated from X →

Lahfir runs Claude Code, Codex and opencode side by side and had been routing between them with rules in a system prompt. A Claude Code hook now asks Jev before delegating: mechanical tasks to Haiku, harder ones to Opus subagents, long implementation work out to another harness.

Lahfir 17 Sep 2026

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

More Founder Notes

Curated from X →

Andre Landgraf's showcase of the yes/no gate, several worked examples at the link.

Andre Landgraf 1h

Ok, jev is really cool. So many great use cases where a fast and accurate yes/no gate can deliver meaningful performance gains.

Played around and built some showcase examples here →
safer-with-jev.com Safer with Jev
Curated from X →

Vipul Sharma's Minecraft agents ask Jev whether to fight or run, from what the agent can see, the mob count, its weapon and its health; one broke off mid-fight as the odds turned.

Vipul Sharma 1h

I hooked up Jev by @typesafeai to a few agents on my Minecraft world. Look at how Jev decides when they should fight and when they should run away.

Jev rates the odds from what the agent can see, mob count, weapon, how hurt it is, and runs away when they are bad. One broke off mid-fight as its odds turned.
Curated from X →

Mahmoud's simulation of fifteen autonomous drones through an asteroid field, Jev deciding for each in under 300 ms, all fifteen arriving.

Mahmoud 2h

Jev can control a swarm of 15 autonomous drones in real time!

I built a simulation to test it navigating an asteroid field:

• Decision latency: < 300ms
• Survival rate: 100% (all 15 reached the destination)

Built with @typesafeai by @CompleteSkeptic

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