edd
Installation
SKILL.md
EDD — Eval-Driven Development
TDD is for code. EDD is for context.
Write behavioral assertions about the agent. Engineer context until they pass. Never ship a harness change without evidence it helped.
The Boundary Rule
Will this context/prompt run >~20 times? → Use EDD.
Still figuring out what "good" means? → Don't yet. Explore first.
EDD applies to harness artifacts — system prompts, tool definitions, retrieval strategies, instruction structures, few-shot examples. NOT for feature code (use TDD) or one-off prompts (use your eyes).