# How Do You Test an AI Agent? A Look at Harness AI Evals

DevFeed: [How Do You Test an AI Agent? A Look at Harness AI Evals](<https://devfeed.tech/articles/how-do-you-test-an-ai-agent-a-look-at-harness-ai-evals-13414.md>)

Original publisher: [Read original article](<https://www.harness.io/blog/how-do-you-actually-test-an-ai-agent-a-look-at-harness-ai-evals>)

Author: Shibam Dhar Uri Scheiner

Published: 2026-08-05T00:00:00Z

Content type: tutorial

Language: en

Sources: [Harness Blog](<https://devfeed.tech/sources/harness-blog.md>)

Topics: [AI Agent](<https://devfeed.tech/topics/ai-agent.md>), [Testing](<https://devfeed.tech/topics/testing.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [SDK](<https://devfeed.tech/topics/sdk.md>), [Deployment](<https://devfeed.tech/topics/deployment.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [ai-agent](<https://devfeed.tech/tags/ai-agent.md>), [deployment](<https://devfeed.tech/tags/deployment.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [prompt-injection](<https://devfeed.tech/tags/prompt-injection.md>), [quality](<https://devfeed.tech/tags/quality.md>), [sdk](<https://devfeed.tech/tags/sdk.md>), [test](<https://devfeed.tech/tags/test.md>)

## AI overview

This article explains how Harness AI Evals tests non-deterministic AI agents before and after deployment. It describes shared metrics and datasets for offline and online evaluation, an open-source evaluation SDK, configurable quality thresholds, and release-pipeline quality gates that help detect regressions before shipping.

## Source excerpt

From defining quality to catching regressions: how Harness AI Evals scores AI agents before and after deployment. | Blog