
A small Python runtime for building tool-using Claude agents with a tool decorator, configurable retries and step limits, trajectory logging, cost tracking, and adaptive thinking support.
Prices and medians update for the tier you select. Caution: thin market — treat statistics as indicative.
Ranked by how closely each one matches Agent Harness's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.
Thin market — few comparable priced products; treat statistics as indicative.