Capstone 01 — Terminal-Native Coding Agent
By 2026 the shape of a coding agent is settled. A TUI harness, a stateful plan, a sandboxed tool surface, a loop that plans, acts, observes, recovers. Claude Code, Cursor 3, and OpenCode all look the same from 50 feet. This capstone asks you to build one end to end — CLI in, pull request out — and measure it against mini-swe-agent and Live-SWE-agent on SWE-bench Pro. You will learn why the hard part is not the model call but the tool loop, the sandbox, and the cost ceiling on a 50-turn run.
This lesson isn’t interactive yet.
It is part of the curriculum and will get the same treatment as Phase 1 — a visual cover, hands-on labs, derivations with numeric checks and a quiz. Until then, the original lesson is the best place to read it:
Part of Phase 19 — Capstone Projects. Use the previous / next cards below to keep browsing the phase.