# Dynamic Harness Search: Building Multi-Agent Systems Per-Query via Prediction > Source: > Published: 2026-10-06 05:00:13+00:00 Agent harnesses specify the roles, instructions, tools, and communication structure used to solve a task, and the right harness depends on the query. Because the value of each design choice is observable only through execution, tailoring a harness to each query has required either executing alternat