The Secret Agent! Blog
Straight from the codebase: how AgentiLoop Agent! works, what changed, and why. 100% Fresh.
MarioKart64JS Goes 3D: Wii Karts, a 3D Title Screen and Finish Fly-Overs
Mario Kart 64 draws its racers as flat sprites. Press 3 in MarioKart64JS and every kart becomes a 3D model, Lakitu included, with real shadows, a rebuilt 3D title screen and a camera that flies around your kart after the finish. Here's how the 3D mode was put together, in screenshots.
What the Issue Tracker Taught Agent!
Sixty-seven issues, a dozen outside pull requests and three releases in a week. Here is what people have said about Agent! where it counts most, in GitHub issues, and what each report changed in the app, from an LLM-written security review in March to a Claude OAuth break this week.
What People Are Saying About Agent!, Six Months In
We read every review, thread and directory listing we could find about AgentiLoop Agent!, from the April Hacker News front page to French, Japanese, Korean, Russian and Chinese write-ups. Here is what they agree on, where they push back, and which of their facts have gone stale.
MarioKart64JS: Rebuilding Mario Kart 64 From Scratch in JavaScript
GoKart was a Mario Kart-style racer. This time the goal was Mario Kart 64 itself, rebuilt in a browser with Three.js and no emulator. In one day and 70 agent commits, Agent! wrote ROM extractors, a TKMK00 decoder, all 16 courses, the title and menu screens, and a JavaScript port of the game's music sequencer. Here's what that took, including the part where one session refused.
Back on Hacker News, Six Months Later, with Auto-Pilot
Agent! is on Hacker News again as a Show HN. The April thread was about a native Mac coding harness; this one is about Auto-Pilot, the goal-driven loop that keeps running cycles until the goal is reached, and the Mario Kart-style game it has been building. Here is the post, what is behind each claim in it, and where to join the discussion.
GoKart: A Mario Kart-Style Racer That Auto-Pilot Built in an Afternoon
Give Agent!'s Auto-Pilot one goal - "create a Mario Kart clone called GoKart" - and come back to a Godot 4 racer with three tracks, eight items, AI rivals and 3,344 passing test checks. Two days and 87 agent commits later it is GoKart 0.0.2, with four courses, Battle mode, Time Trials and a Mario Kart 64 style menu. Here is what the log says actually happened, including the parts where it got stuck.
The Whole Family Ships: Agent! 1.1.87 and AgentiLoop CLI 0.0.5
Agent! for Mac gets Auto-Pilot, six new providers, a stricter critic and macOS 14.6 support. The Rust and Go CLIs get a bigger toolbox: search, web fetch, todos, AGENTS.md, /undo, custom commands and --json.
Agent! Gets a Face: An Optional Speaking, Animated Avatar on New Tabs
Coming in the next Agent! pre-release, scheduled for Saturday, October 10 - an optional avatar that speaks and animates alongside the task log. Not cute, not cuddly, and not a mascot. Now in development.
Archive
Older posts that found few readers. They stay online and come back to the list above if they pick up again.
- How Agent! Got Started: Three Days in March
- What Is an Agent Loop? A Robot, a Sandwich, and the Art of Trying Again
- Sonoma, Intel, and the Mac That Was Not Dead Yet
- A Release on the First of Every Month, and Pre-Releases in Between
- The Terminal Strikes Back: Taking the Agent Loop Cross-Platform in Rust and Go
- Agent! Now Runs on macOS 14.6 and Intel Macs: How We Got Off macOS 26
- Before the Model Gets a Vote: Inside Agent!'s Shell Guardrails
- Welcome to the Agent! Blog: One App, Any AI, Total Command Over Your Mac
- Why Agent! Compacts at Half the Window, and the Three Bugs That Shrank It to 16K
- Meet Jev: A Second Opinion That Answers in Types, Not Prose
- Why We Ripped Out Coding Mode: Let the Model Pick Its Own Tools
