Startup Zencoder (formerly For Good AI) has launched a cloud-based AI-powered E2E testing agent that simplifies the pipeline from initial code to production-ready applications. Now in public beta, Zentester tackles “verification,” which Zencoder founder and CEO Andrew Filev calls “the missing link” in scaling AI-created code from concept to market-ready app. That complicated process is often delayed by a bottleneck in final testing. Zentester is designed to take that late-stage verification process “from days to hours,” Filev says. Zentester has the typical agent superpowers — seeing and interacting as users do by clicking buttons, filling in forms and navigating workflows.

Zenster validates the user-interface features as well as backend responses. And it understands natural language, which means it can accept feedback in plain English rather than requiring code or script.

“This brings comprehensive E2E testing directly to the engineer’s fingertips,” Zencoder explains in an announcement. It integrates within the developer environment (accelerating “vibe coding”) and also operates in the engineering phase, speeding the highly iterative CI/CD (continuous integration and continuous delivery/deployment) process, where subtle code changes are made frequently and must be reliable.

Zentester relies on the cloud-based platform Zencoder released last month called Zen Agents. “Zentester doesn’t just generate tests — it gives developers the confidence to ship by validating that their AI-generated or human-written code does what it’s supposed to do,” adds Filev.

“It can even be employed by Zencoder’s AI agents, enabling them to self-verify the code they create,” SiliconANGLE points out, noting that “when they do this, they’ll remember the mistakes they made, so it also helps them to improve their coding skills over time.”

The Zentester rollout “comes as the AI coding market undergoes rapid consolidation,” writes VentureBeat, pointing out that “last month, Zencoder acquired Machinet, another AI coding assistant with over 100,000 downloads” while during that same period OpenAI agreed to acquire Windsurf for roughly $3 billion.

“The moves underscore how companies are rushing to build comprehensive AI development platforms rather than point solutions,” according to VentureBeat.

Two-year-old Zencoder already has an “arsenal of AI coding agents,” of which Zentester is the latest, writes SiliconANGLE, citing tools for “code generation, repair, test generation, optimization and documentation.”

In May, the company debuted Zen Agents, which has two primary components: a marketplace of open-source AI agents geared toward a half dozen common programming tasks, and a framework that lets software teams build custom AI agents.