2026 Q1 is the year developers still build the agent harness. 2026 Q3 / 2027 is the year the LLM builds its own harness.
2026 Q1 is the year developers still build the agent harness. 2026 Q3 / 2027 is the year the LLM builds its own harness. Today, every AI coding agent — Claude Code, Cursor, Codex, Gemini CLI, Aider, you name it — depends on the same hidden layer: the files that brief the agent before it starts work. AGENTS.md CLAUDE.md .cursor/rules SKILLS/ MCP server lists memory schemas test commands lint commands “Do not touch these paths.” “Require human approval before this.” Different IDE, same boiler...
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