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Ask whether an AI agent, MCP server, coding assistant or AI product is safe to use, and get a straight verdict from Greenlit Books, with the setup steps that make it safer and a link to the full review. Each verdict comes from reading the product's own code, docs and settings, and says which version it read and when. There are more than 800 of them, covering coding assistants, automation tools and hundreds of MCP servers. It also checks statements about AI agents against a ledger of 564 claims, each sorted by what it rests on (a published result, the book's argument, a method you can run, or the author's own account) and each with a citation. Where a claim rests on an outside source, the result says what that source does and does not establish. Ask it how or why about working with AI agents and it answers from Greenlit's books: it finds the passage in the free first chapters, the concept pages, the glossary and the claim ledger that bears on your question, quotes it with a link to the exact section, and points you to the page where the rest of the topic is. And when you want to go deeper, it finds the right practical book on working with AI, with a free first chapter to read. Read-only. No account and no sign-in. Nothing you ask is stored beyond short-lived request logs.