QQWING generator

This tool parses QQWING dice notation and evaluates expressions to produce a numeric total and a detailed roll breakdown. It serves tabletop RPG players, game masters, educators teaching probability, and AI workflows requiring structured roll data. Users can supply a single expression or multiple expressions for comparison and distribution analysis.
Conceptually, the system performs lexical parsing, syntax validation, and dice roll evaluation using standard QQWING rules. It computes each die result, applies modifiers, and sums results to produce a final total. When a seed is provided, dice results become reproducible; without a seed, results are randomized per evaluation.
Key value includes rapid planning, probability exploration, and reproducible testing for campaigns. It outputs a structured data set suitable for programmatic consumption by AI agents, game sheets, or simulations. Distinguishing features include robust input validation, clear error codes for invalid expressions, and a compact numeric output mode.
Use cases include quick damage computations, ability checks, or bulk testing of many expressions to compare odds. Advanced users can feed observed results into probability models or teach probability by varying inputs. The tool is designed for researchers and players who need fast, repeatable dice roll data. It also supports multi-die pools, keep/drop modifiers, and exploding dice semantics as defined by QQWING notation. Outputs can include per-roll histories with individual die values and cumulative totals after each operation.