Harbor Format

concept · updated Jul 30, 2026

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A popular data format for representing agent traces and interactions, developed and maintained by the same team behind Terminal Bench.

Overview

Harbor Format is described by Rustem Feyzkhanov (Snorkel AI) as "one of the most popular formats nowadays" in the context of agent trace representation and agent simulations. He notes its association with the Terminal Bench maintainers as a mark of its provenance and credibility within the agent evaluation ecosystem. From Agent Traces to Agent Simulations — 7:37

Context of Use

Feyzkhanov references Harbor Format in a talk focused on moving from agent traces to agent simulations, suggesting the format plays a role in structuring or serializing agent interaction data — likely serving as a standard schema for capturing the inputs, outputs, and intermediate steps of agent runs in a way that is interoperable with benchmarking and evaluation tooling such as Terminal Bench. From Agent Traces to Agent Simulations — 7:37

Points of Disagreement

No contrasting or critical perspectives on Harbor Format appear in the available material.