🛠️ All DevTools

Show HN: Mocktail – Free, open-source mock API server with a built-in dashboard Hi HN, I built the first version of Mocktail years ago. I recently came back to the project, and after a pretty substantial rebuild, v4 is now out.<p>Mocktail is a free and open-source, self-hosted mock API server with a built-in dashboard and database, packaged as a single ~25 MB binary. You can run it locally or on your own infrastructure — no account or hosted service required.<p>You can define endpoints and responses, generate realistic data per request, customize headers, status codes and latency, and inspect incoming requests in real time.<p>With v4, I also added MCP support, so coding agents can create and manage mocks directly, along with an optional built-in AI assistant using your own API key. Both are completely optional.<p>It’s been fun coming back to something I built years ago and bringing it up to date. I’d love to hear what you think, especially anything you’d change or add.

Show HN: Banquish – Take other websites apart and build your own

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Show HN: Mole – Deep research agent for your terminal Doing research with agents is fun until they blow way past budget, jumble the sources, and don&#x27;t even give you the best possible answer, just sound confident.<p>And if you want to run some research task on local data - you have no idea where your data ends up after the prompt consumes it.<p>So I built this tool: a deep-research agent with an enforced budget, verified quotes, and a privacy boundary for local data.<p>1. Never spend more than you budgeted (measured overshoot is 0%). 2. Every claim carries a source 3. Data stays local (give a CSV, it&#x27;ll analyze it without the data ever leaving your machine)<p>Works with most LLMs, including coding agents, subscriptions, local models, etc.<p>It&#x27;s free and open source, would appreciate all feedback!

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Show HN: LuaCAD – Parametric CAD Scripted in Lua LuaCAD models solids in Lua rather than the OpenSCAD language, with operator overloading for CSG (`a + b`, `a - b`, `a * b`).<p>It ships with a CLI and a desktop app, including a preview area and a text editor.<p>I&#x27;ve always been a big fan of OpenSCAD, but the SCAD language itself is unfortunately quite cobbled-together and is a very poorly designed programming language.<p>LuaCAD takes all the good parts of OpenSCAD and combines them with one of the best scripting languages. It has now completely replaced OpenSCAD for me, and I think it provides a better experience than OpenSCAD for all use cases. I&#x27;d love to hear any reasons why LuaCAD shouldn&#x27;t fully replace OpenSCAD!<p>It’s fully open source and you can find the repo here: <a href="https:&#x2F;&#x2F;github.com&#x2F;ad-si&#x2F;LuaCAD" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ad-si&#x2F;LuaCAD</a><p>Tech stack:<p>- It&#x27;s implemented in Rust and uses mlua (<a href="https:&#x2F;&#x2F;github.com&#x2F;mlua-rs&#x2F;mlua" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;mlua-rs&#x2F;mlua</a>) to execute the Lua code.<p>- Uses OpenCSG (<a href="https:&#x2F;&#x2F;opencsg.org" rel="nofollow">https:&#x2F;&#x2F;opencsg.org</a>) for fast and correct rendering of the 3D models (like OpenSCAD)<p>- Uses Manifold (<a href="https:&#x2F;&#x2F;github.com&#x2F;elalish&#x2F;manifold" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;elalish&#x2F;manifold</a>) to create the manifold triangle meshes<p>- Native support for all BOSL2 functions (i.e. implemented in Rust for better performance)

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RayforceDB – a pure C analytics database with a Lisp-like syntax

Show HN: Online SNMP MIB database - upload/view your own MIBs

Show HN: Mininote: Instant, plain-text note taking without tracking or lock-in So, I built this little thing over the past month or so now, I got tired of places for tickets, notes, and such being shoved front and center in apps.<p>Thus I created Mininote to get away from the noise I wanted something simple to move out of the way completely when I don&#x27;t need it but be there when I do need it<p>It contains a slew of features built right in, but the coolest is the sites own API is also the sites own public API no split seam

Show HN: Graft – Claude Code hooks that cut grep tokens by 42%

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Show HN: Shoehorn, a library to quantize an LLM to fit your Mac's VRAM I made this after seeing someone posit the idea online yesterday over lunch then spent some time refining it. So far it&#x27;s pretty impressive IMO! Right now I am running Qwen3-30B-A3B on my 24gb unified memory m4 MacBook Pro at 50 tok&#x2F;sec and this should definitely not be working for such a large model on my middling hardware.<p>Things are detailed in the README to get up and running and DESIGN.md has details on all the choices and such made along the way.

Show HN: Artifex - Graph Based GPU Harness for AI Agents Artifex is a machine-first, headless CLI runtime built for autonomous coding agents to author, validate, and render media node graphs locally. The agent talks to Artifex through a structured CLI interface. Workflows are DAGs, and each node is a plugin that can implement its own execution logic..<p>Each node has capability to inject logic into graph processing, WebGPU rendering, audio processing and their own SKILL.md file. Nodes can also inject their react components (not available with CLI) - which will be available with the desktop app.<p>Execution is topological and supports checkpoint caching via state flags (--state and --from-state), allowing agents to adjust layout coordinates or downstream filters without recomputing expensive and long upstream generation calls (such as Video Generation using Fal AI or an Agent Node using OpenRouter).<p>Multi-track visual composition timeline with animations, blending, media cut, crop, color LUTs, filter graphs, audio effects and other media editing node&#x27;s are compiled and rendered directly on the local GPU runtime, ensuring deterministic offline execution and intermediate artifacts at each step of the pipeline.<p>The CLI[0] is not fully open source yet, but its repository contains the build bundle. The plan is to make it open source after we decouple it from our monorepo that powers our web application [1].<p>Our roadmap also contains a SDK for agents&#x2F;programmers to build plugins locally in their own filesystem for custom use-cases.<p>[0]: <a href="https:&#x2F;&#x2F;github.com&#x2F;gatewai-dev&#x2F;artifex" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;gatewai-dev&#x2F;artifex</a> [1]: <a href="https:&#x2F;&#x2F;gatewai.studio" rel="nofollow">https:&#x2F;&#x2F;gatewai.studio</a>

ToolJet is the open-source foundation of ToolJet AI - the enterprise app generation platform for building internal tools, dashboard, business applications, workflows and AI agents 🚀

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