LucidWrap

Inspiration: What if the compiler didn't just spit out cryptic diagnostics, but actively reasoned about AST contexts, explained errors in crystal-clear plain English, auto-generated verified unified diff patches, and guarded your CI/CD pipelines? That vision gave birth to LucidWrap.

What it does:LucidWrap is an AI-powered developer toolchain wrapper and DevOps security reviewer powered by Google Gemini 3.6 Flash. It transparently sits on top of standard C/C++ toolchains (g++, clang++, make, cmake, MSVC), intercepts compiler diagnostics in real time

How we built it:

### Compiler Interceptor & Parser Engine (src/core/parser.ts): Built with regex grammar parsers supporting GCC, Clang, and MSVC stderr streams. It extracts error locations, severity levels, caret markers, instantiation trace stacks, and generates high-level AST structural hints (e.g., [TemplateDecl], [ConceptConstraint], [ManualMemoryCall]).

### Gemini Intelligence Core (src/core/gemini.ts): Integrated with the official @google/genai SDK targeting Gemini 3.6 Flash (client.interactions.create). It features specialized prompt schemas enforcing structured JSON output for Error Resolution, Security Audits, and PR Reviews, backed by a resilient heuristic engine for offline development. ### Diff & Patching Engine (src/core/patcher.ts): Implemented using diff to compute line-level unified patches, validate syntax boundaries, and perform atomic in-place file rewrites. Interactive CLI & TUI (src/cli/index.ts): Built with commander, chalk, and prompts to deliver a zero-overhead terminal wrapper (lucidwrap run g++ main.cpp).
###Web Studio & Backend API (src/client & src/server): Built with React 19, Vite, TypeScript, and Express, featuring cybernetic styling, Lucide icons, AST visualizers, and simulated CI review modules.

Challenges we ran into:We had to build a multi-pass parser capable of correlating instantiation stack traces with the primary diagnostic line.Developers expect instant compiler feedback. By leveraging Gemini 3.6 Flash, we achieved sub-second structured inference times, ensuring the CLI wrapper feels responsive during standard edit-compile-test loops.

Accomplishments that we're proud of:Built a working CLI wrapper that developers can prefix before any existing build command (lucidwrap run g++ ...) without changing their build scripts or Makefiles.

What we learned: How to structure compiler AST and diagnostic context to maximize LLM reasoning quality for systems programming. The nuances of C++20 concepts and memory model diagnostics across GCC, Clang, and MSVC. How to design resilient AI agents that combine structured schema output, deterministic programmatic patchers, and human-in-the-loop confirmation.

What's next for LucidWrap: No idea, will see.

Built With

• express.js
• gemini
• react
• typescript
• vite