A 7-day from-scratch tutorial for building an Agent/Harness by hand in TypeScript. Day 4 splits both reads and writes out of the shell: reads go through confirmation-free dedicated tools (ls/read/glob), writes go through a dedicated channel that shows a diff before touching disk (write/patch), and the accumulated tools are unified into a single registry — the first time the model completes the full read → modify → verify loop.
A 7-day from-scratch tutorial for building an Agent/Harness by hand in TypeScript. Day 3 wires up the model's first tool that touches the real machine: running shell commands locally, with three guardrails — timeout, output truncation, and confirm-before-run — so the Agent can finally take real action.
A 7-day build-an-Agent-from-scratch tutorial: hand-write the simplest possible Agent/Harness in TypeScript. Day 2 builds the tool calling loop: the model can request get_current_time, the program executes it and hands the real time back to the model, laying the groundwork for the command and file tools to come.
A 7-day build-an-Agent-from-scratch tutorial: hand-write the simplest possible Agent/Harness in TypeScript/Node.js, implementing a REPL loop and streaming multi-turn conversation from zero. This post covers what a REPL is, why it makes the right foundation for an Agent, and how readline plus an OpenAI-compatible API gets the first step, "being able to chat," running in under 160 lines of code.
The implementation and value of functional interfaces or interface-based functions in Go (golang). What is an interface-based function, and why wrap a function in an interface instead of passing the function directly as a parameter? How does Go's standard library net/http use interface-based functions?
Learn Python 3 with a single article — installation, basic types (strings, ints, lists, dicts), control flow (if, for, while), composite types (classes, methods), functional programming, object-oriented programming, error handling (try/except/finally), pip and third-party packages, and how to write unit tests.
