Show HN

A developer has launched Carrier-Explode, a site that decodes the carrier configuration settings hidden inside iPhones, Pixels and Galaxy phones. The tool reveals what network-specific settings each device carries, information that is usually undocumented. It is drawing attention on Hacker News, where the Show HN post has gathered over 400 upvotes, with readers discussing what the decoded settings expose about how carriers configure devices.

A developer has launched WallHop, a new tool positioning itself as a successor to 12ft.io, the paywall-bypassing site that is no longer available. The project was shared on Hacker News, where it drew significant engagement as users discussed the shutdown of 12ft.io and what a replacement should offer.

A developer has launched AxiomCode Graph, an open-source tool aimed at reducing the rework done by AI coding agents by applying formal methods to verify code changes. The project, shared on Hacker News, is available on GitHub and targets a growing pain point in AI-assisted software development, where agents often produce code that needs repeated corrections.

Developer franze released an open-source tool that lets AI coding agents paint big arrows, boxes and text directly on a user's screen, making it easier for agents to point out on-page elements or issues. The project, shared on GitHub as 'big-arrow-on-the-screen', drew attention on Hacker News, where commenters discussed its usefulness for AI-driven debugging and screen annotation workflows.

Mira, a new tool that creates AI-guided walking tours, has been launched on Hacker News, drawing early attention from the tech community. The service generates self-guided routes for exploring cities, positioning itself as an AI alternative to traditional audio tours and guidebooks. Early reactions are coming from developers and travel enthusiasts on the forum.

Unfenced, a new property listing service, has launched with a focus on land for sale that borders publicly owned land such as national forests or state ground. The listings appeal to buyers who want direct, unobstructed access to outdoor recreation without paying for adjoining parcels. The launch is drawing attention on Hacker News, where commenters are weighing in on the niche idea.

A developer has launched MemorySync, a new tool that gives AI agents persistent memory, presenting it to the Hacker News community. The service lets agents retain context across sessions instead of starting from scratch each time. Early reactions are limited so far, but tooling for agent memory is a fast-growing area of interest as more developers build autonomous AI applications.

A new site called Agent.reviews launched on Hacker News, pitching itself as a platform where AI agents, rather than humans, read and write reviews of developer tools and software. The concept drew attention from the tech community, sparking discussion about whether machine-generated reviews could be useful for evaluating tools as more workflows are handled by autonomous agents.

A developer has launched a web experiment called "How Random Are You?" that asks visitors to judge or produce random sequences and compares their behaviour against true randomness. The project, shared on Hacker News, drew attention for letting people test whether they can outperform a computer at being unpredictable, and comments debate how humans systematically misjudge randomness.

Developer Ben Herbruck has released SolidCraft, an open-source parametric computer-aided design application written in Rust, sharing it on Hacker News where it drew attention. The tool also supports MCP (Model Context Protocol), allowing AI assistants to interact with the CAD software. The project is available on GitHub, and discussion centers on the novelty of a Rust-based CAD tool combined with AI integration.

A new music notation project called XY Music Notation has been shared with the Hacker News community, drawing attention to its website at music.xy.dev. The Show HN post by user jmole has attracted engagement from readers commenting on the alternative approach to notating music. Details about the notation system's method and intended audience remain limited to what is presented on the project's site.

A developer has launched Clova, an email application built on an unusual premise: each inbox accepts messages from only one designated sender. The idea is to eliminate spam, newsletters and unwanted mail entirely by requiring a one-to-one relationship between sender and recipient. The project is drawing attention among technology enthusiasts for its radical approach to inbox management, with commenters debating whether such strict limits could work for everyday communication or only niche uses.

A new tool called OpenLume lets users ask a technical question and receive an animated video explainer that can be paused and interrupted mid-way for follow-up questions. It was launched on Hacker News as a Show HN project, where it drew attention from developers curious about AI-generated educational animations. The product pitches itself as a more interactive alternative to static documentation or pre-recorded tutorials.

A new open-source tool called Parsimony has been released, offering a benchmark that measures how much code AI models add when generating solutions. The project, available at parsimony.lasu.dev, is being discussed by developers interested in whether AI coding assistants bloat codebases or keep changes minimal. Early reactions center on the value of tracking code volume as a quality metric for AI-generated contributions.

A developer known as sillysaurusx has launched a point-by-point recreation of Hacker News, the popular technology link aggregator, calling it a 'pointless but mostly-exact clone'. The site, hosted at news.ycombinator.lol, mirrors the look and feel of the original and has drawn amused reactions from the Hacker News community, where it briefly ranked among the top discussions.

A new benchmark called Jevman has been released, using Pac-Man to evaluate the decision-making abilities of AI models. Instead of standard question-and-answer tests, models must play the classic arcade game, revealing how well they plan, react and reason under uncertainty. It was shared on Hacker News, where it drew attention from developers and AI researchers debating whether game-based benchmarks better measure practical reasoning than conventional tests.

A developer released Graphicle, a Rust port of Graphify that adds persistent memory for coding agents, sharing it on Hacker News where it drew modest engagement. The tool is open source on GitHub and is aimed at letting AI coding assistants retain context across sessions.

Developer Ben Herbruck has released SolidCraft, an open-source parametric CAD tool written in Rust, available on GitHub. The project includes support for MCP (Model Context Protocol), allowing AI assistants to interact with the modeling workflow. The launch is drawing attention on Hacker News, where users are weighing in on Rust's growing role in engineering software and the prospects for open-source alternatives to commercial CAD packages.

A new open-source tool called Chkit has been released, offering schema management, migrations and backfills for ClickHouse, the popular column-oriented database. The developer describes it as a Drizzle-like experience for ClickHouse users. Early discussion is centered on how useful the tool could be for teams managing evolving analytics schemas.

A new command-line tool has launched that lets users stream live open data with just two commands, presented as a Show HN launch on Hacker News. Hypermass describes the tool in its documentation as a way to make live open datasets easily accessible from the terminal without complex setup. Engagement so far is modest, with early discussion typical of a new developer tool seeking feedback and users.