Auto-generate load tests/synthetic test data from OpenAPI spec/HAR file
Hey HN, We just shipped a new AI-powered feature... BUT the "AI" piece is largely in the background. Instead of relying on a chatbot, we've integrated AI (with strict input & output guardrails) into a workflow to handle two specific tasks that would be difficult for traditional programming: 1. Identifying the most relevant base URL from HAR files, since it would be tedious to cover every edge case or scenario to omit analytics, tracking, and other network noise. 2. Generating synthetic data for API requests by passing the API context and faker-js functions to GPT-4. The steps are broken down…
In plain words
This tool automatically generates load tests and synthetic test data from OpenAPI specifications or HAR files. It uses AI to extract relevant base URLs from HAR files while filtering out analytics and tracking noise, then generates realistic synthetic data for API requests using GPT-4 with strict safeguards. Designed for developers who need to create API tests quickly, it focuses on reducing manual work and cognitive load through a guided workflow where users verify AI-generated outputs at each step.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hey HN, We just shipped a new AI-powered feature... BUT the "AI" piece is largely in the background. Instead of relying on a chatbot, we've integrated AI (with strict input & output guardrails) into a workflow to handle two specific tasks that would be difficult for traditional programming: 1. Identifying the most relevant base URL from HAR files, since it would be tedious to cover every edge case or scenario to omit analytics, tracking, and other network noise. 2. Generating synthetic data for API requests by passing the API context and faker-js functions to GPT-4. The steps are broken down into a simple flow, with users working with the AI and verifying the output throughout. All of the focus is on reducing cognitive load and speeding up test generation. Let me know what you think!
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