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.
This API exposes 3 operations across 2 paths, and defines 14 schemas. It is described by OpenAPI 3.0.1, at version 3.7.0.
Requests are made against a single base URL, https://api3.mountain.com.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
MNTN Reporting API 3.0 declares
1 security scheme
for authenticating requests.
An API key is passed in the query as key (API Key).
By default, every request must be authenticated.
API Key— MNTN-issued advertiser API key. Available in Account Settings.
Paths & Operations 3
Across 2 paths, the API surfaces 3 operations — 2 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.
Public reporting data (/apidata)
Schemas 14
The contract defines 14 schemas that model the data the API accepts and returns. The most detailed are GetRequest (14 properties), DataRequest (13 properties), ProblemDetail (9 properties), JsonDataResponse (6 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
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