Agentest: Vitest-style e2e testing for AI Agents
Agentest is a Vitest-style test runner for AI agents in Node.js/TypeScript that allows testing AI agents without touching their code.
Why it matters
Agentest simplifies the testing of AI agents, which is crucial for building reliable and robust AI-powered products.
Key Points
- 1Agentest is an embedded agent-simulation and evaluation framework for Node.js/TypeScript
- 2It spins up LLM-powered simulated users, mocks tool calls, and evaluates agent performance using LLM-as-judge metrics
- 3Agentest provides scenario-style tests, deterministic mocks, trajectory assertions, and CI-ready CLI exits
Details
Testing AI agents is challenging as you need to verify tool calls, retries, and trajectories, ideally in CI, without modifying the agent's code. Agentest addresses this problem by providing a Vitest-style test runner for AI agents. It lives in your project like Playwright and allows you to run agent simulations, mock tool calls, and evaluate agent performance using LLM-as-judge metrics. Agentest enables scenario-style tests, deterministic mocks, trajectory assertions, and CI-ready CLI exits, making it a powerful framework for end-to-end testing of AI agents.
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