A 7-day tutorial on building an Agent from scratch, writing the simplest possible Agent/Harness in TypeScript. Day 10 adds two kinds of cross-session information: AGENTS.md stores project rules, and memory stores know-how accumulated while running, so a freshly created session's model knows the project rules and remembers previously confirmed preferences.
A 7-day tutorial on building an Agent from scratch, writing the simplest possible Agent/Harness in TypeScript. Day 9 makes the Agent list a plan before acting: add a TODO table maintained by the model, plus a subagent that isolates context. The main Agent arranges the order, the subagent handles small tasks with clear boundaries, and current progress always shows in the right-hand panel.
A 7-day tutorial on building an Agent from scratch, writing the simplest possible Agent/Harness in TypeScript. Day 8 draws boundaries for tools and leaves an escape hatch for writes: use .geekagent/GeekAgent.json to define permissions and directory boundaries, and save the most recent state before every file write—operations that shouldn't happen are blocked up front, and mistakes can be reverted with /undo.
A 7-day tutorial on building an Agent from scratch, writing the simplest possible Agent/Harness in TypeScript. Day 7 gives the terminal a new desk: the program temporarily takes over the whole screen, the message stream lives on the left, and a usage panel stays permanently on the right — per-turn / total tokens and context usage stay visible while you chat, and the original terminal content is restored on exit.
A 7-day tutorial on building an Agent from scratch, writing the simplest possible Agent/Harness in TypeScript. Day 6 does two things: let one process maintain several mutually independent sessions at once (/new, /sessions, /open), then persist the whole session collection together with the current ID to JSON in one shot (/save, /load, auto-save on exit) — "chat long" is upgraded to "split apart and kept around".
A 7-day tutorial on building an Agent from scratch, writing the simplest possible Agent/Harness in TypeScript. Day 5 tackles "chat long without forgetting": when the history array only grows and the conversation keeps getting longer, history compaction keeps the context size under control, so long conversations stay within the model's context window.
