Real AI agent use cases, with sources and setup prompts

Build an open-source terminal agent that tops TerminalBench

Built an open-source agent that the author reports topped TerminalBench on Gemini-3-flash-preview.

See pricing page1-2 weeksAdvancedSource linked

Source

GodelNumbering on Hacker News · 2026-04-27 · Project link

Written in our own words. Credit to the original author. Link checked 2026-10-15.

What they did

Built an open-source agent that the author reports topped TerminalBench on Gemini-3-flash-preview.

Result (as claimed)

Claimed top TerminalBench score on that model in the Show HN.

Tools they used

Gemini

Cost: Pricing depends on the tools you pick; check each official pricing page.

Set it up

  1. Pick a contained repo or task

    Start on a branch or side project where mistakes are cheap.

  2. Install and configure

    Set up Gemini. Read what it can run on your machine and limit permissions where possible.

  3. Run it on a real task

    Give it a well-scoped issue and let it work. Review the diff like any pull request.

  4. Add guardrails

    Keep tests and CI in the loop, and never let an agent push to main or touch production secrets unattended.

Copy the full setup prompt

Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.

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Goal: Build an open-source terminal agent that tops TerminalBench
What the original author did: Built an open-source agent that the author reports topped TerminalBench on Gemini-3-flash-preview.
Reported result (as claimed by the author): Claimed top TerminalBench score on that model in the Show HN.
Source: https://news.ycombinator.com/item?id=47920787
Tools they used: Gemini
Category: Dev & ops

Please:
1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like).
2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure.
3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data.
4. Finish with a checklist to run it again next time.

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