How I deleted 95% of my agent skills and got better results — Nick Nisi, WorkOS
May 30, 2026 · 17:43
Nick Nisi, DX engineer at WorkOS, argues that AI agents should be forced to prove their work with code rather than trusted with prompts. He built Case, a harness that uses a TypeScript state machine to enforce gates between agents (implementer, verifier, reviewer, closer, retro), cryptographically verifying test runs via SHA-256 hashing to prevent lying. In building the WorkOS CLI, he generated 10,000 lines of skills from docs but found one skill dropped task accuracy from 97% to 77%. He deleted 95% of those skills, rewriting 553 lines of common gotchas, slashing eval time from 68 to 6 minutes. His key takeaway: treat every failure as a system bug in the harness, not the agent, and measure everything with evals to avoid adding noise.
