Published on July 4, 2026, the post describes four signals for evaluating coding agents and warns that they can drift from what people intend.
Published on July 4, 2026, the post covers reward signals used for programming tasks: test suites, scored checklists for web pages, real conversations between engineers and assistants, and project evaluations by an agent. It also discusses failures in these signals and fixes, without detailing them in the available summary.
Engineers evaluating coding agents can use the examples to look for reward hacking and develop more robust checks. To verify the details and fixes, consult the original post by its title and check each of the four signals described there.