Responsive Studio Chrome Extension Tests Sites Across 50+ Device Screen Sizes

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A developer has released Responsive Studio, a free Chrome extension designed to help web developers and designers test website responsiveness. The tool supports over 50 real-world screen sizes spanning phones, tablets, laptops, and desktops. Users can select a device and instantly preview how their website appears without manually resizing the browser window. The extension is open source, with its code publicly available on GitHub. The creator has indicated that additional devices and features are planned for future updates.

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Graph Databases Offer Agents a Better Way to Answer Relational Questions

Most AI agent retrieval systems rely on vector indexes, which are well-suited for similarity-based queries but cannot handle questions about relationships or dependencies between entities. Graph databases address this gap by modeling data as nodes and edges, allowing agents to traverse connections of unknown depth without complex recursive queries. A graph query language like Cypher lets developers express multi-hop traversals concisely, making it easier to answer questions such as what services depend on a given component. Published benchmarks for one such graph database cite sub-millisecond two-hop query latency and high read throughput, with the vendor encouraging readers to review the full methodology before drawing conclusions. The post invites developers to share their experiences with graph-based retrieval in production, particularly around token efficiency compared to traditional vector or relational approaches.

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ProgrammingDEV Community ·

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A developer has released NexusOS, an open-source, locally-run AI environment designed to control a computer through voice or text commands. The system can automate browser tasks, manage files, move the mouse, and execute multi-step routines without keyboard input. It uses PyAutoGUI for desktop control and Playwright for browser automation, while also supporting smart home integration via MQTT and Home Assistant. NexusOS retains context across sessions using vector embeddings, giving it persistent memory of past interactions. The project is available on GitHub and supports extensibility through a Python-based plugin system.

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ProgrammingDEV Community ·

Tollgate v0.2.3 Adds Long-Context Pricing Tiers to Prevent LLM Budget Surprises

Tollgate, an open-source LLM gateway that reserves and settles costs per request, has released version 0.2.3 with improved handling of long-context pricing tiers. Some AI providers, including Google for Gemini 2.5 Pro on Vertex AI, charge a higher rate on the entire request once a prompt crosses a token threshold, not just on the excess tokens. A proxy storing a single flat rate per token class will silently under-charge such requests, potentially causing invoice discrepancies worth thousands of dollars. The update introduces configurable per-model thresholds and rate multiples, applied consistently to both cost reservations and final settlements to prevent drift. Until a tier is explicitly configured, Tollgate logs oversized prompts as possible under-charges rather than applying an assumed uplift.

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ProgrammingDEV Community ·

PureScript Pitched as Middle Ground Between AI Code Generation and Manual Mastery

A developer essay published on DEV Community argues that the debate over AI-assisted coding has split programmers into two camps: those who fully delegate writing to models and those who insist on manual control over every line. The author proposes that PureScript, a pure statically typed functional language similar to Haskell, could bridge this divide by keeping code structure closely aligned with business logic and readable as a specification. Using a refund-decision example, the piece demonstrates how PureScript type definitions can communicate intent clearly enough for both humans and AI models to reason about before any implementation details are written. The author draws a parallel between traditional compilers and modern AI code generators, suggesting both perform the same conceptual task of translating high-level ideas into lower-level instructions. The conclusion is that expressive, strongly typed languages may allow developers to confidently delegate more code generation while retaining meaningful oversight and understanding.

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