Methods and systems for indexing data for a search tool are disclosed, wherein the method is performed using one or more processors. The methods and systems may comprise an operation of providing an indexing application programming interface (API) for implementation in relation to one or more data resources of a data processing platform requiring data of the data resource to be indexed for searching using a search tool of the data processing platform. The interface may be configured, when implemented in relation to a data resource, to send data indicative of one or more definitions of data to be crawled from said data resource to an indexing system of the data processing platform, and to generate an event queue indicative of one or more events associated with said defined data that have occurred in relation to the data resource.