Ionden Skills

Agent skills for Claude Code and OpenAI Codex. subagent-optimizer audits Claude Code subagents and Codex custom agents for tool allowlists, keys Codex rejects, prompt bloat, model and effort, and launch token cost; skill-optimizer cuts a skill's own SKILL.md without losing an instruction; writing-tests-that-can-fail keeps tests real, in any language: real behaviour, every condition, and a failure on the bug they exist to catch.