agent-testing-harness

Test AI agent systems from unit to end-to-end with mock LLM responses.

5|1|Updated Feb 4, 2026
One-click install
npx skills add https://github.com/latestaiagents/agent-skills --skill agent-testing-harness
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: agent-testing-harness
Source: https://github.com/latestaiagents/agent-skills/tree/main/plugins/agent-architect/skills/testing/agent-testing-harness
Command: npx skills add https://github.com/latestaiagents/agent-skills --skill agent-testing-harness

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides a comprehensive framework for testing AI agent systems, ensuring their reliability, accuracy, and safety before deployment.

Core Features & Use Cases

  • Unit Testing: Test individual agent components like tools and prompts.
  • Component Testing: Mock LLM responses to test agent logic in isolation.
  • Integration Testing: Validate multi-agent system coordination and failure handling.
  • End-to-End Testing: Simulate real-world scenarios for complete workflow validation.
  • Evaluation Metrics: Define and measure key performance indicators for agents.

Quick Start

Use the agent-testing-harness skill to write unit tests for the SearchTool component.

Frequently Asked Questions about agent-testing-harness

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test AI agent systems for reliability and accuracy before deployment?

You can test AI agent systems by creating test harnesses and evaluation frameworks that validate task completion, accuracy, efficiency, safety, and reliability across unit, integration, and end-to-end levels. This ensures autonomous agents function correctly before deployment.

Can I mock LLM responses to test agent logic in isolation?

Yes, you can mock LLM responses to perform deterministic testing of agent logic in isolation. This component testing approach allows you to validate individual agent behaviors and tool interactions without relying on live model outputs.

What is the best way to validate multi-agent system coordination and failure handling?

The best way to validate multi-agent coordination is through integration testing. This approach tests how multiple autonomous agents interact, coordinate tasks, and handle failures within a shared workflow before moving to full end-to-end simulation.

How do I evaluate autonomous agents in real-world scenarios?

You evaluate autonomous agents by running end-to-end testing that simulates real-world scenarios. This validates complete workflows and provides metrics for task completion, safety, and efficiency across the entire agent system.

What metrics should I measure when building an AI agent evaluation framework?

An AI agent evaluation framework should measure metrics for task completion, accuracy, efficiency, safety, and reliability. These key performance indicators are defined during test harness creation to quantify agent behavior across all testing levels.

Does agent testing support unit testing for individual tools and prompts?

Yes, agent testing supports unit testing for individual components like tools and prompts. This allows developers to validate specific agent functionalities at the lowest level of abstraction before testing broader multi-agent interactions.