About CluePilot — The Story Behind the Solver

CluePilot was built for one reason: solving crossword clues should be understood, not just looked up. Every result comes with a plain-English explanation so you can learn, not just copy an answer.

Our Mission

We believe the best crossword tools make you a better solver over time. That means showing your work — explaining why CAT answers "Feline pet (3)", or walking through the anagram indicator that unlocks a cryptic clue. CluePilot is free to use, free of tracking scripts, and designed to be as fast as possible on any device.

The Technology

CluePilot is a fully serverless application hosted on Cloudflare Pages (static frontend) and Cloudflare Workers (API backend). It connects to an OpenAI-compatible large language model — currently DeepSeek Chat — via a structured prompt that encodes decades of crossword convention knowledge. The AI provider can be swapped at any time without changing a single line of application code.

Answers are cached globally in Cloudflare Workers KV, so popular clues return results in milliseconds from a data centre near you. The pattern-only solver works entirely in your browser using the ENABLE public-domain word list — no server call required.

Privacy & Data

We collect minimal data. Clues you submit are processed by our AI provider and cached to improve future response times. We do not sell or share your data. Full details are in our Privacy Policy.

Contact

Questions, bug reports, or suggestions? Visit our Contact page — we read every message.