🔥 domcyrus / rustnet - Per-process network monitoring for your terminal with deep p
GitHub热门项目 | Per-process network monitoring for your terminal with deep packet inspection. Cross-platform, sandboxed. | Stars: 4,287 | 46 stars today | 语言: Rust
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Building a Deterministic Security Scanner for AI-Generated Code TL;DR: I built TruffleKit , a CLI security scanner that catches 22 vulnerability classes in under 2 seconds with zero false positives. Here's how the scanning engine works under the hood. AI code generation is producing more production code than ever. But AI models are trained on public code — which means they reproduce the same security mistakes the open-source ecosystem has been making for decades. In my tests, 73% of AI-generated code snippets contain at least one security vulnerability that a standard linter would completely miss. I couldn't find a tool that was fast, deterministic, and had zero false positives. So I built one. The Architecture The scanner is a rule-based deterministic engine written in Python. Each rule is a self-contained module that pattern-matches against a file's AST or raw content. scanner/ ├── __init__.py ├── engine.py # Orchestrator ├── reporter.py # Output formatting ├── rules/ │ ├── __init__.py │ ├── secret_detection.py │ ├── sql_injection.py │ ├── path_traversal.py │ ├── weak_encryption.py │ ├── cors_misconfig.py │ └── ... (22 rules total) └── models.py Key Design Decisions 1. AST-Based Pattern Matching For languages like Python and JavaScript, we parse the file into an AST and match against structural patterns — not regex. This eliminates false positives from strings that happen to look like code. import ast class SQLInjectionRule ( BaseRule ): def check ( self , tree : ast . AST , filename : str ) -> list [ Finding ]: findings = [] for node in ast . walk ( tree ): # Match: cursor.execute(f"...{variable}...") if isinstance ( node , ast . Call ): func_name = self . _get_call_name ( node ) if func_name in ( ' cursor.execute ' , ' db.execute ' , ' connection.execute ' ): for arg in node . args : if self . _is_f_string_or_concat ( arg ): findings . append ( self . _make_finding ( severity = ' high ' , message = ' SQL injection: parameterized query required ' , line = node .
There's a pattern I've noticed with every new AI coding tool that comes out: they all want you to switch editors. Or open a new terminal. Or context-switch into some standalone app. I DON'T WANT TO DO THAT My entire dev workflow lives in VS Code. My keybindings, my split panes, my snippets, my extensions — all of it. When Google released the Antigravity CLI ( agy ), an agentic coding assistant, I genuinely liked what it could do. But to use it properly, I had to live in a terminal window, manually managing sessions, typing slash commands from memory, and losing my editor context entirely. So I built a VS Code extension for it instead. What is Antigravity? Google Antigravity is Google's agentic coding CLI — think of it as a Gemini-powered dev assistant that can read your project, run tools, execute terminal commands, and help you build. It's the kind of tool that can handle complex multi-step tasks, not just autocomplete. The CLI is called agy , and it's genuinely capable. The problem was the workflow: terminal-first, session management by hand, and no visual layer over the context you're already in. The Extension: Antigravity for VS Code Install it on the VS Code Marketplace Source on GitHub The core idea is simple: the extension is a UI layer. It never bundles or replaces the agy binary — it shells out to whichever version you have installed locally. Same philosophy as the Claude Code VS Code extension: the editor provides the surface, the CLI does the work. Here's what it actually does: Sessions List The sidebar panel opens to all your saved sessions. You can open an existing one, delete it, or start fresh. New sessions can be launched in sandboxed mode or with permissions bypassed — accessible right from the "New Session" overflow menu, without memorizing CLI flags. Any session with an active turn shows a loading indicator in its row, so you always know what's in flight. Chat Panel (Material 3 Expressive) This is the main surface. Each session runs its own live,
Most online file converters require uploading your documents, images, or videos to an unknown server. This is slow, inconvenient, and raises serious privacy concerns. I decided to build something different: a converter that works entirely inside your browser. Processing large files without a backend presents two main engineering challenges: How do you avoid consuming all available RAM? How do you prevent the user interface from freezing? This article explains how I solved these problems using OPFS, Web Workers, and a Backpressure mechanism. The result is a working tool you can try right now: PixelForge Free . The Architecture at a Glance Here is the simplified data flow of the entire pipeline: Drag & Drop → OPFS (Virtual Disk) → Worker Pool (Backpressure) → ZIP Stream → Download Problem 1: Out-of-Memory (OOM) Crashes The Challenge: Loading many files directly into the browser's memory is impossible. A user dropping a folder with 100+ high-resolution images would instantly crash the tab. The Solution: Origin Private File System (OPFS) OPFS provides a fast, isolated virtual disk inside the browser. Instead of loading files into RAM, my pipeline intercepts the drop event and streams the raw binary data directly to this virtual disk. Here is a simplified version of how it works: // Get a reference to the virtual disk const root = await navigator . storage . getDirectory (); const fileHandle = await root . getFileHandle ( `input_ ${ id } .raw` , { create : true }); // Create a writable stream to the disk const writable = await fileHandle . createWritable (); // Stream the file directly from the user's computer to the virtual disk await file . stream (). pipeTo ( writable ); This allows the application to accept a folder with 500+ items without consuming more than a few megabytes of actual RAM. The data stays on the user's SSD, not in memory. Problem 2: UI Freezing The Challenge: Image compression, PDF parsing, and video encoding are CPU-intensive operations. Running them
Why RAG needs context judgment, not just better retrieval Most RAG systems optimize for retrieval. That makes sense. Search better. Embed better. Chunk better. Rank better. Fetch more sources. All of that matters. But retrieval alone does not answer a different question: Should this context actually influence the model? That is the problem FreshContext is built around. FreshContext is context judgment infrastructure for AI agents, RAG systems, and retrieval workflows. The simple version: candidate context in decision-ready context out Retrieval is not judgment A retriever usually answers: What might be relevant? A context judgment layer asks: What should happen to this context before it reaches the model? Those are different problems. A source can be relevant but stale. A source can be recent but low-confidence. A source can be useful as background but not strong enough to cite. A source can have no reliable date. A source can be a duplicate. A source can need verification before it should influence an answer. A normal RAG pipeline can retrieve all of that and still pass it straight into the prompt. That is where things get messy. The model may reason fluently from weak context, and the final answer can look confident even when the input material was stale, uncertain, or not citation-grade. The missing layer between retrieval and reasoning FreshContext sits after retrieval and before reasoning. It does not try to replace search, vector databases, RAG frameworks, or agent frameworks. It focuses on the boundary between them and the model. The product spine looks like this: candidate context -> FreshContext Core -> freshness / provenance / confidence / utility / source profile -> decision helper -> decision-ready output -> model / agent / app The goal is not just to produce another score. The goal is to turn candidate context into a decision. Example decisions include: cite_as_primary cite_as_supporting use_as_background needs_refresh needs_verification watch_only excl
Here is the bet we made: build software memory-first, not model-first , and it will outperform. Everyone else is racing to wrap the next model. We did the opposite. We built the memory layer first, the routing first, tool-calling, now the recursive engine, then let the model be a swappable part. Today that bet has a name: Backboard Development Studio . It starts with the R-CLI , a coding harness now in open beta. The headline result? It beats frontier models using open ones. Keep reading, the numbers are below and there is a promo code at the bottom. Test it. The beta is open. Two lines and you are running. # macOS / Linux curl -fsSL https://app.backboard.io/api/cli | bash # Windows (PowerShell) irm https://app.backboard.io/api/cli/windows | iex Get your API key: https://app.backboard.io Promo code: DEVTOCLI for credit toward inference while you put it through its paces. Find the Promo submit in the top right corner of the billing page. The hypothesis, stated plainly Model-first thinking says: pick the smartest model, prompt it well, hope it remembers. Memory-first thinking says: give the system real persistence, real routing, real recall, and a "smaller" model will outwork a "smarter" one that forgets everything between turns. We believed the second one. So we built it. The R-CLI is powered by our memory algorithms (the same ones that rank #1 on LoCoMo and LongMemEval ) and runs on Backboard's unified API: memory, routing across 17,000+ models , RAG, and stateful threads behind one key. Then we tested it in public. That part did not go quietly. The numbers we're getting on internal test runs this week 92% on Terminal Bench 2.1 running Codex 5.5 70% on Terminal Bench 2.1 running GLM 5.1 , an open-source model Up to 30% fewer tokens and up to 90% lower cost than the closed harnesses 0% of your code used to train anyone's model <-- Please read the T's & C's of your fav harnesses... Read that second line again. An open model, inside our harness, posting numbers that go