Do We Still Need to Write API Tests? An Experiment with LLM Agents Testing a REST API

📰 Medium · AI

Learn how LLM agents can automate API testing and whether manual testing is still necessary

intermediate Published 20 Jul 2026
Action Steps
  1. Read an OpenAPI spec using an LLM agent
  2. Configure the LLM agent to generate test code
  3. Run the generated test code against a REST API
  4. Compare the results with manual testing efforts
  5. Evaluate the effectiveness of LLM agents in API testing
Who Needs to Know This

Developers and QA engineers can benefit from understanding the role of LLM agents in API testing to improve their workflow and reduce manual testing efforts

Key Insight

💡 LLM agents can automate API testing, but it's unclear if they can fully replace manual testing

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🤖 Can LLM agents replace manual API testing? 🤔

Key Takeaways

Learn how LLM agents can automate API testing and whether manual testing is still necessary

Full Article

There’s a version of this question that’s already been answered: yes, LLMs are useful for writing test code. Point one at an OpenAPI spec… Continue reading on Medium »
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