ARCS:gentic Retrieval-Augmented Code Synthesis with Iterative Refinement

ARCS turns a question and a codebase into runnable, tested code. It indexes your library with a vector store, breaks the question into function-sized steps, generates code one step at a time with the relevant context retrieved from the index, and then executes a self-written test suite in an isolated sandbox — refining the code until the tests pass.