> ## Documentation Index
> Fetch the complete documentation index at: https://docs.probsights.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Search overview

> Discover and filter prediction markets across Kalshi and Polymarket.

Available on all plans (Free tier included).

Search covers three things: finding a *series* (a recurring or related group of
events), finding *markets* and *events* inside one, and tailing recent listings.
Most workflows that feed into historical endpoints start with
[Search series](/api-reference/search-series).

| Endpoint                                           | Use for                                                        |
| -------------------------------------------------- | -------------------------------------------------------------- |
| [Search series](/api-reference/search-series)      | Find a `series_id` like `KXBTC15M` or `btc-up-or-down-15m`.    |
| [Search events](/api-reference/search-events)      | List events by text query, by `series_id`, or both.            |
| [Search markets](/api-reference/search-markets)    | List markets by text query, by `series_id`, or both.           |
| [Related endpoints](/api-reference/search-related) | Combined search, recent listings, and markets under one event. |

## Conventions

| Topic          | Behavior                                                              |
| -------------- | --------------------------------------------------------------------- |
| Auth           | `X-API-Key` on every request — see [Authentication](/authentication)  |
| `exchange`     | `kalshi` or `polymarket` (case-insensitive). Invalid values → **400** |
| `status`       | `active` (default) or `closed`                                        |
| `limit`        | Integer **1–100**                                                     |
| `offset`       | Non-negative integer. Default `0`                                     |
| IDs            | Exchange-native source IDs (e.g. `KXBTC15M`), not internal UUIDs      |
| Response shape | JSON **arrays** (except combined `GET /search`)                       |
| Field names    | `snake_case`                                                          |