The prediction market industry is seeing explosive growth, having reached $150B+ in cumulative volume. Behind the scenes, every trading agent, dashboard, and market operating in this space depends completely on indexed onchain data. In the case of Polymarket, all of this essential information is already indexed by The Graph. You have multiple options to interact with it, whether you choose to make queries using Subgraphs, stream the data through Substreams, or simply call the Token API.

Read further details here: https://thegraph.com/blog/prediction-markets-data-layer/