Your coding agent doesn't always follow your rules — Talha Sheikh, Checkout.com

Summary

• Vector V1 uses Claude Code completion hooks to run configured checks and return failures for another repair attempt.
• Better instructions and more capable models do not replace evidence that the requested work meets its completion criteria.
• Verification should be a reusable, language-agnostic contract that teams can enforce at conversation, commit, and multiagent boundaries.
• The speaker proposes that stronger harness checks may make cheaper models viable, while treating that cost benefit as a hypothesis.