Zhihu Tech Column

Aug 4, 2026 · Artificial Intelligence

From OnCall to Work Automation: How We Evolved AI from Answering Questions to Continuously Solving Problems

The article recounts how a simple OnCall assistant was transformed into a full‑stack AI‑driven work‑automation platform, detailing three cognitive shifts—from answering to solving to self‑improving—while describing the Harness engineering framework, real‑world case studies, success metrics, and lessons for building reliable AI agents.