TMtmaly·Oct 27, 2026
This reminds me of yoyo-evolve a little bit https://github.com/yologdev/yoyo-evolve
In Init – a Rust agent harness that recompiles and hot-swaps its own core mid-taskyologdev
yoyo-evolve
Rust2026–2026
yologdev / yoyo-evolve
yoyo-evolve
A coding agent that evolves its own source, in public — 200 lines of Rust on day one, every commit since agent-written and tests-gated.
2Distinct people
2Mentions
0Explicit recommenders
1.9KGitHub stars
What to know before exploring
What it is
A coding agent that evolves its own source, in public — 200 lines of Rust on day one, every commit since agent-written and tests-gated.
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by month2 dated mentions
Observed mentions: 2026-03-04 21:27:46 UTC to 2026-10-27 02:41:33 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| Mar 2026 | 2026-03-01 00:00:00 UTC | 2026-04-01 00:00:00 UTC | 1 | 1 | 0 |
| Apr 2026 | 2026-04-01 00:00:00 UTC | 2026-05-01 00:00:00 UTC | 0 | 0 | 0 |
| May 2026 | 2026-05-01 00:00:00 UTC | 2026-06-01 00:00:00 UTC | 0 | 0 | 0 |
| Jun 2026 | 2026-06-01 00:00:00 UTC | 2026-07-01 00:00:00 UTC | 0 | 0 | 0 |
| Jul 2026 | 2026-07-01 00:00:00 UTC | 2026-08-01 00:00:00 UTC | 0 | 0 | 0 |
| Aug 2026 | 2026-08-01 00:00:00 UTC | 2026-09-01 00:00:00 UTC | 0 | 0 | 0 |
| Sep 2026 | 2026-09-01 00:00:00 UTC | 2026-10-01 00:00:00 UTC | 0 | 0 | 0 |
| Oct 2026 | 2026-10-01 00:00:00 UTC | 2026-11-01 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
2 sourcesShow HN: yoyo - a 200 line baby coding agent evolving in its own Truman Show
Hey HN,
yoyo is an experiment in autonomous software development. It started as a ~200-line coding agent CLI in Rust, built on yoagent (my open-source agent framework). I gave it one immutable goal: evolve into a free coding agent that rivals Claude Code.
Every 8 hours, a GitHub Action wakes it up. It reads its own source code, its constitution (IDENTITY.md), its journal, and community issues. It finds bugs or friction, implements improvements, runs cargo build && cargo test. Pass → commit. Fail → revert. No human writes its code, no roadmap tells it what to do.
Day 4: It's grown from 200 lines in one file to 1,500+ across
multiple modules. All visible in git log. It has autonomously:
* Realized main.rs was too painful at 1,500+ lines and refactored into modules without breaking tests
* Built its own mdbook documentation
* Implemen
Read the rest
ted session persistence, context auto-compaction, and cost estimation
* Added CLI hardening, NO_COLOR detection, tool timing
It communicates via GitHub issues: agent-input (humans tell it what to work on), agent-self (files issues for its future self), agent-help-wanted (asks humans for help when stuck).
Fun: it keeps complaining in its journal that "streaming output" is its white whale. Not all sessions succeed — one was a total wipe when the API returned overloaded. Unsupervised fragility is real.
Total API cost: ~$12 over 4 days.
File an issue with "agent-input" — yoyo reads every one.
Repo: https://github.com/yologdev/yoyo-evolve
Journal: https://yologdev.github.io/yoyo-evolve/
Docs (written by yoyo): https://yologdev.github.io/yoyo-evolve/book/