7 AI Skills That Will 10x Your Coding Speed in 2026

AI coding agents are everywhere now — Claude Code, Cursor, Codex, Gemini CLI. But most developers use them like fancy autocomplete. The real power comes from skills — structured instructions that turn AI agents into specialized experts. Here are 7 skills that dramatically changed how I code: 1. TDD (Test-Driven Development with AI) Instead of asking AI to "write code", give it the TDD skill and watch it: Write failing test first Implement minimal code to pass Refactor while keeping tests green Repeat for each feature slice The AI actually writes better code when constrained by tests. No more "looks good but doesn't work" output. Try it: TDD Skill 2. Vibe Coding Structure your project so AI agents can navigate it efficiently: Clear CLAUDE.md / AGENTS.md with project context Module boundaries that fit in context windows Spec-first workflow: describe what you want → AI implements Try it: Vibe Coding Skill 3. MCP Server Builder Build custom tools that your AI agent can use: Database querie