MNTN Reporting API 3.0
Public partner reporting surface at api3.mountain.com. GET /apilist returns the tables and columns available to the authenticated advertiser; GET and POST /apidata execute multidimensional queries over Info (dimension) and Summary (metric) tables joined on shared keys, with JSON-encoded filter syntax, fully qualified column identifiers such as campaigninfo.name and graph.impressions, and json, csv, human and Excel output formats. Authenticated with the advertiser API key as a key query parameter. API 3.0 defaults to First Touch attribution; API 1.0 stopped returning data 2026-04-01.