Searches the Pexels stock library (photos or videos) with the user's connected API key. Returns items with id, dimensions, duration (videos), author, thumbnail url, available video qualities, and a downloaded flag telling whether the asset is already in the project's media pool. If no key is connected the tool errors — TELL THE USER to open Library → Generators → Stock Library and connect their Pexels key. Results are subject to the Pexels license; keep the author attribution when asked about provenance. LOOK AT THE THUMBNAIL BEFORE YOU DOWNLOAD. Results are matched on the uploader's WORDS, not on what is in the frame — a search for 'earth from space' returns the Moon, other planets and artists' renders, and they all look plausible in a result list. Fetch the returned thumbnail url and actually view it. Picking on the title alone is how the wrong subject ends up in a finished video. See read_skill {topic:'verify'}.