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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 * Implemented 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/

StockPortfolio.pro is a calm, focused portfolio tracker for long-term investors. Track holdings, allocation, fundamentals, and performance in one clean dashboard — no broker connection required. Add positions manually, spot concentration risk by ticker/sector/theme, and compare returns against the market. Privacy-first, with optional analytics consent.

The article discusses the rapid growth in satellite launches, with a projected 50,000 satellites to be launched by 2025, raising concerns about space debris and the potential impact on the environment and astronomical observations.

Amazon Lightsail has launched a new feature called OpenClaw, a free, open-source platform for building and managing cloud-based microservices and applications. OpenClaw provides developers with tools and infrastructure to deploy, manage, and scale their applications on the cloud.

The sf-appeal Python package provides a simple and efficient way to interact with the San Francisco property assessment appeals system, allowing users to automate the appeals process and track the status of their appeals.

The article examines the decline in the use of Form D, a filing required for private securities offerings, and discusses the potential implications of this trend on the transparency of the private fundraising market.

The article discusses the rumors and speculation surrounding Windows 12, including potential new features, pricing, and release timeline, based on industry reports and insider information.

The article discusses the growing popularity and health benefits of cold water swimming, which has gained significant attention during the COVID-19 pandemic. It explores the physiological and mental impacts of this practice, highlighting how it can boost the immune system, improve mood, and provide a sense of community among enthusiasts.

Decathlon cites Brexit as the reason for higher e-bike prices in the UK and has launched a rental service to make e-bikes more accessible to consumers.

The article discusses the development of a mobile application called Rowing Reader, which aims to provide rowers with easy access to technical information and data related to their sport. The app features a comprehensive database of rowing knowledge, including training techniques, equipment maintenance, and race strategies.

The article explores the discovery of the world's oldest known geometric patterns, which were engraved on ostrich eggshells dating back 60,000 years. The findings shed light on the early development of geometric and artistic abilities among ancient human populations in Africa.

The article discusses the concept of 'Interruption-Driven Development', where developers are constantly disrupted by notifications and context switching, leading to decreased productivity and focus. It explores strategies to manage these interruptions and maintain a more efficient and focused development workflow.

This article discusses the potential downsides of using software agents, highlighting the risks of relying on autonomous systems and the importance of maintaining human control and oversight in various applications.

The article provides a comprehensive guide to various ping utilities, including ping, fping, mtr, and others. It discusses the features and use cases of each tool, helping readers understand the differences and choose the most appropriate one for their network troubleshooting needs.

The article argues that relying on economic averages, such as GDP per capita, can be misleading and fail to capture the nuances of a nation's economic situation. It encourages a more in-depth analysis of different economic indicators and the distribution of wealth within a population to better understand a country's economic realities.

I’ve been working with AstraDB recently, and it reminded me how painful Cassandra schema management can be — especially when handling CQL migrations across environments.

Most tools I tried either:

Assume simple linear migrations

Don’t work well with managed Cassandra setups

Or make it hard to understand the actual state of a cluster

So I built cassachange.

It supports:

Apache Cassandra Managed Cassandra AstraDB (including SCB) ScyllaDB

It handles schema migrations, but I also added data insights and MCP capabilities because understanding the current cluster state is often half the battle.

A few things I’m especially curious about:

How are people managing Cassandra schema changes in production today?

Are most teams still using raw CQL scripts?

How do you handle drift between environments?

Has anyone built internal tooling for this?

I’d love critical feedback — especially from people running Cassandra/Scylla at scale.

Docs: https://cassachange.com

Repo: https://github.com/sketchmyview/cassachange

Happy to answer anything.

BMW Group announces it will deploy humanoid robots in production for the first time at its plant in Germany, using the technology to assist human workers and increase efficiency in manufacturing processes.

The article discusses the concept of 'Unified Solitaire', which aims to combine the rules and mechanics of various solitaire card games into a single, comprehensive game. It explores the potential benefits of this approach, such as creating a more diverse and engaging solitaire experience for players.

The article discusses the growing problem of web scraping and its negative impact on website owners, including increased server load, bandwidth consumption, and potential legal issues. It highlights the challenges faced in addressing this issue and the need for more effective solutions to protect online content and maintain a fair digital ecosystem.