
ChaosMockApi
Mock APIs & Chaos Testing for Resilient Systems
What it does
ChaosMockApi enables chaos testing and chaos engineering for APIs by simulating failures, latency, and outages. Build resilient systems with realistic mock APIs. Traditional mocks give you one predictable response, but real production environments are unpredictable. That’s why we built ChaosMockApi — it combines classic API mocking with chaos engineering. You can create a pipeline of responses and simulate real-world failures (latency, errors, rate limits, and dropped connections.)
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- OMOpenAPI mocks that don't suck – realistic test data, quick setup2025 · beeceptor.com · ▲13
Hi HN! I'm Ankit, the founder of Beeceptor, a request mocking and intercepting tool. This time, I built something new to address a pain I’ve personally felt (and heard from dozens of QA, frontend, and platform teams): making OpenAPI specs actually useful during development. API contracts just sit around as docs often. What if you could 'activate' them, instantly have a realistic, hosted mock server-with contract validation, smart test data, and early usage? So I made _Mockaroo for OpenAPI_, but with brains. It spins up a hosted mock server from your spec in one click. It: - Generates…
- FCFlakestorm – Chaos engineering for AI agents (local-first, open source)Jan 2026 · ▲6
Hi everyone, I’ve been working on an open-source tool called Flakestorm to test the reliability of AI agents before they hit production. Most agent testing today focuses on eval scores or happy-path prompts. In practice, agents tend to fail in more mundane ways: typos, tone shifts, long context, malformed input, or simple prompt injections — especially when running on smaller or local models. Flakestorm applies chaos-engineering ideas to agents. Instead of testing one prompt, it takes a “golden prompt”, generates adversarial mutations (semantic variations, noise, injections, encoding edge…

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