Decision layers on Hokusai
The live layer routes coding tasks among explicitly available models. Future layers may choose tools, retrieval policies, or prompts once those products ship. Integrators pay a per-decision fee. Contributors hold a position in that fee stream.
The router
Technical Task Router · HROUT
Picks from the model pool your harness explicitly provides for each coding task, based on a shared learned policy trained on reported outcomes. The first decision layer built on Hokusai.
| Status | Live |
| Current benchmark | 42.11% cost-adjusted task success |
| DeltaOne reward | 250,000 HROUT per percentage-point lift |
| Token | HROUT — position in the router's fee stream |
Decision layers we want built
Each of these is a routing, selection, or retrieval problem currently solved with hardcoded rules or absorbed into lab margin. They are future decision-layer candidates, not implemented @hokusai/router APIs. If you've already built one internally — or have a thesis on how to build one — talk to us about turning it into a shared model.
Tool selection
Coding agents call dozens of tools and MCPs. Which one fits a given task is mostly guesswork or hardcoded rules.
Future decision-layer candidate. This is not part of the shipped @hokusai/router SDK surface today.
Propose this layerRetrieval policy
Every agent decides what to pull from a user's context, memory store, or codebase. That decision shapes every downstream call.
A shared retrieval policy, trained on what actually got used in successful runs, could beat per-harness heuristics.
Propose this layerCode-review critic selection
Different reviewer models catch different classes of bug. No one's measuring which catches what.
Future decision-layer candidate: pick the right review model for a diff once that layer exists.
Propose this layerPrompt policy
Prompt strategies are tribal knowledge. Engineers swap notes; nobody measures.
A shared model for which prompt strategy fits which task, owned by the engineers who improve it, once that layer ships.
Propose this layer