Article · Routing & model choice
Jev in the Agent Runtime
An engineering note that places Jev as a typed micro-decision layer inside an agent harness rather than a planner, with preconditions for confidence…
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How builders describe it
An engineering note that places Jev as a typed micro-decision layer inside an agent harness rather than a planner, with preconditions for confidence gates and fan-out and a runtime split into five parts.
The decision Jev makes
Pick an agent, a model, a skill from a catalog, or a function and its arguments.
Where it fits
Deciding which agent, model, skill or function should handle a request. Jev is a natural router: the options are fixed and the confidence tells you when to fall back. All 172 routing & model choice projects →
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Routing & model choicecodex-jev-routerUse a typed Jev decision to choose a Codex subagent model and reasoning effort when a parent agent delegates work.GitHub · ★ 3 · suenot