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New open-source tool SIwithin sandboxes Claude Code and Codex CLIs with spend caps

A developer released SIwithin, a single-file Python tool that runs AI coding CLIs like Claude Code and OpenAI Codex unattended, restricting them to specified folders and enforcing a dollar budget per run. It uses a loopback proxy to meter Claude API requests with a per-run token instead of the user's real key, and logs one record per run showing cost and completion status. The tool currently works only on macOS and refuses to run on Linux or Windows.

OpenAI reports major gains in legacy code migration with GPT-6.1 Sol and GPT-6 Astra

OpenAI says its newer models show large improvements writing and migrating code in older languages like COBOL, Fortran and Visual Basic. Using its new MultiLangBench test, GPT-6 Astra scored an average 87.4% pass rate versus 26.8% for GPT-5.6 Sol, with COBOL jumping from 10.9% to 72.1%. Separately, GPT-6.1 Sol reportedly reached 86.6% accuracy migrating COBOL to modern languages at low reasoning effort, rising to 97.9% at higher effort.

Decker reaches four years with 1.61-to-1.71 update adding gamepad support and better compression

The Decker hypercard-like software project marked its fourth anniversary by summarizing a year of changes between versions 1.61 and 1.71. Key additions include gamepad input with keyboard fallback, a new IMG3 image codec that cuts file sizes 2-4x for many decks, and new contraption attribute types for configuring settings with structured data or notes.

Mixbook Offers Early Discounts on 2026 Holiday Photo Cards

Mixbook, a photo card and photo book printing service, is currently running several discount offers ahead of the 2026 holiday season. The promotions are running at the same time, meaning customers can compare codes to find the best available deal. The writer previously tested multiple holiday card platforms and selected Mixbook as a favorite based on design variety, editing tools and print quality.

Active exploitation hits Plex Media Server flaws patched last month

Researchers report that attackers are actively exploiting a chain of recently patched Plex Media Server vulnerabilities, dubbed 'Plex2Shell,' to achieve remote code execution on unpatched devices. A honeypot set up to monitor the activity recorded scanning within a day and subsequent successful infections that install cryptomining software and residential proxy applications.

OpenCode breach exposes API keys, triggers unauthorized AI spending charges

OpenCode, an open-source AI coding tool, disclosed a security breach affecting 1.4% of users of its OpenCode Console platform, where some store API keys for AI services. The company described it as a large-scale distillation attack and notified affected users by email, while developers reported unexpected charges on OpenAI, Anthropic and Google AI accounts, some exceeding $1,000. Anthropic and Google blocked exposed keys, OpenAI worked with OpenCode to restore access and refund credits, and OpenCode said refunds for unauthorized charges are underway.

PostgreSQL 19 beta sees 8-10 major features reverted after review wave

Several significant features committed to the PostgreSQL 19 development branch have been pulled during the beta period, an unusually high number compared to past release cycles. A PostgreSQL developer involved in some of the affected patches says the reverts stemmed from a mix of factors, including architectural flaws and a surge of edge-case bug reports surfaced partly through LLM-assisted code review.

Essay argues agentic coding tools are turning code into malleable 'clay'

In a Sep 25, 2026 post titled 'Code is clay now,' writer Alberto Denia argues that agentic coding tools have drastically lowered the cost of changing code, making it behave more like clay than stone. He describes this as enabling a 'modeling' approach to building software, where developers sketch rough versions and iteratively reshape them rather than planning meticulously upfront.

Doubl introduces Maxwell, an AI layer between code and hardware

Doubl has unveiled Maxwell, described as a new kind of model that operates between source code and the hardware executing it, aiming to let software adapt during execution rather than run purely as fixed, deterministic instructions. The announcement frames traditional computing as splitting all 'thinking' into the programming stage, with execution remaining mechanical, and positions Maxwell as a way to bring AI-driven adjustment into the execution process itself.

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