Building an agentic harness that outlasts the model (2026) - Shopify

This post details the development of an "agentic harness" named Dispatch for automated security vulnerability discovery and remediation. It outlines the multi-agent orchestration workflow, including stages for test bootstrap, architecture documentation, file cataloging, partitioning, hunting, verification, post-processing, reporting, and remediation. Key technical contributions include strategies for code partitioning to manage costs and improve accuracy, the development of a test oracle for web vulnerabilities, and lessons learned in producing consistent and reliable results from AI models. The post emphasizes the importance of the harness outlasting the models themselves.