Cursor builds a Go terminal agent from a reference

Lakshya Agarwal used Cursor to build a small terminal agent as a weekend project in Go, a language he had not previously written. He began with a brief introduction to the language and Thorsten Ball’s article on building an agent, then alternated between Gemini 2.5 Pro and Claude Sonnet 4 within Cursor. The account also mentions using Cursor Background Agents.

The resulting application can read and edit files, list directories, search patterns and run shell commands. It supports Gemini model selection, thinking-mode configuration and tool confirmations. For its interface, Agarwal supplied Bubble Tea documentation to Cursor and worked toward a terminal experience rather than a web wrapper. He linked the public source and described having a working version in a few hours.

The source is candid that the result is rough and substantially generated. It does not provide a detailed test log, security audit or division of tasks among background workers. The useful lesson is to provide a small, understandable reference architecture and real library documentation, then keep state, context and tool design visible. The author emphasises that the basic tool loop was straightforward; preserving the right context and tracking the environment were the harder parts. This is a learning prototype, not evidence of a production-safe replacement for existing terminal agents.

Prompt
Suggested prompt (written by Agents In Use, not the author's)

Source: Blog · Lakshya Agarwal