# Research queue Live monitor of concept research: runs in progress, runs started from the concept tree, and the queue of concepts waiting. A live monitor read from the public, read-only API endpoint `https://api.llms-explorer.com/api/research/queue`. It lists the research runs that hold concepts right now (/dr runs, explorer frontier batches, research suite runs), the runs started from the concept tree's facts panel, and the next concepts waiting in `concept-tree/RESEARCH_QUEUE.md`. A concept held by an unfinished run is checked out and has no research button on [/tree/](/tree/).