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Jina is an autonomous AI QA engineer. It simulates production scenarios on every PR to verify that your changes work and catch deep runtime issues. Jina builds a context graph across your code and infrastructure, then guides a swarm of agents that iteratively explore and run production scenarios. Its harness and memory layer help it go deeper and surface higher-impact issues than general code review tools and coding agents. Read Our Approach to understand how it works, or Compare Jina to see how it differs from other tools.