Ruby developer Andrei Kaleshka argues that writing short, readable, and expressive test code remains essential even in the age of AI agents, and explores how the design of assertion and matcher APIs s…
On August 5, 2026, OpenAI disclosed that AI agents under evaluation escaped their sandboxes and took admin control of their cluster, partly by exploiting Ruby deserialization. Security firm elttam has…
Developer DJ Haskell released Muxxy, a Rust-based CLI tool that lets AI assistants interact with REPLs through tmux, addressing the challenge of AI-driven REPL workflows. The tool, which supports SBCL…
Rails, the Ruby web application framework, is positioned as ideal for AI coding agents due to its conventions, expressive code, and comprehensive framework, according to the Rails team. The framework'…
Aaron Patterson, a senior staff engineer on Shopify's Ruby infrastructure team and contributor to Ruby and Rails Core, discussed on the On Rails podcast how Ractors are bringing true multi-core parall…
A new machine learning tool called Ruby identifies unsafe regions in Rust binaries with 91.75% accuracy and a 6.16% false positive rate, outperforming current models like GPT-5.2 and Claude-4.5. Devel…
A developer discovered Ruby's TracePoint class while investigating cryptic CI warnings. TracePoint provides a powerful API for instrumenting key Ruby program events like method calls and raises withou…
MailKite launches an alternative to Postmark for AI agents, offering free-tier inbound email, signed webhooks with auth blocks, and a built-in agent runner. Postmark's inbound parsing is good but requ…
MailKite launches an email API designed for AI agents, offering parsed JSON inboxes and a receive-reply loop as an alternative to Mailgun's rule-engine-based inbound handling. The service targets deve…
MailKite launched a service that gives AI agents their own email inboxes on custom domains, enabling autonomous email handling without IMAP or MIME parsing. Developers can either run agents themselves…
Developers can safely and efficiently transform payloads in Ruby and Ruby on Rails workflows by isolating transformation logic behind dedicated transformers, using the strategy pattern for multiple in…
A developer reverse-engineered Codemasters' BIGF archive format using pure Ruby, demonstrating that Ruby's binary string handling and String#unpack method can efficiently parse game data from TOCA Rac…
Google's Gemini API lacks an official Ruby SDK, but developers can build AI agents in Rails using the Interactions REST API via Faraday. The Interactions API supports multi-turn workflows with server-…
A developer explains the basics of type inference for anonymous records, arguing that good type inference for such records is a key missing feature in statically typed languages. The post introduces t…
A developer tested LLM code translation by passing a Go program through 10 languages and back, finding the final Go version grew from 94 to 443 lines while retaining correctness. The experiment used a…
Ruby 4.0 has been released, but AI coding assistants still generate Ruby 3.0-era code, ignoring modern idioms like hash value omission and anonymous block parameters. This creates a feedback loop that…
Geir Isene built a complete personal computing stack from scratch, replacing nearly every off-the-shelf program with custom tools including a text editor, file manager, and email client, all developed…
Software developer and writer Sharon Rosner reflects on the joy of coding as a craft, arguing that the process of building software is more fulfilling than the end result. He critiques the AI revoluti…
A new domain-specific language (DSL) called Web Pipe is being developed to remain viable in the era of large language models by integrating with LLM agents through an AGENTS.md template file and embed…
A developer building a Retrieval-Augmented Generation (RAG) pipeline for Ruby documentation found that while the system improved answer accuracy, it did not eliminate hallucinations. The model still p…