Agent-readable docs index: /llms.txt. Full docs in one file: /llms-full.txt. Download /docs.zip to grep all markdown files locally.

Underlyings

GET /v1/underlyings
[
  {
    "underlyingKey": 1,
    "id": { "Sequence": 12, "Index": 0 },
    "name": "Democratic Party", "label": "Democratic Party",
    "question": "Will the Democratic Party win the House in 2026?",
    "slug": "democrats-house", "eventSlug": "which-party-will-win-the-house-in-2026",
    "polymarketYesToken": "8324…", "polymarketNoToken": "3315…",
    "status": "active", "image": "https://…", "endDateMs": 217987200000
  }
]
status is active, halted or delisted. An underlying without a catalog entry carries only underlyingKey and id.