Quickstart
Three calls to a live audience.
Authenticate once, create a segment, then stream identities into it. The moment identities resolve, the segment is addressable on MNTN's Performance TV inventory.
01 — Authenticate
Send your API key
Every call carries a key issued with your connection, as a Bearer token or an access_key query param.
02 — Create a segment
Name the audience
Open a segment with a name and an optional source. You get back a segment_id to populate.
03 — Add identities
Fill it, keep it fresh
Add identities to the segment in batches. Add and remove as your audience shifts; MNTN targets the current set.
POST /v2026/audience/segments/{segment_id}/identitiesThe model
Two resources, one relationship.
The whole API is segments and the identities inside them. Everything else is reading, filtering, and keeping that set current.
Base URL
integrations.ex.mountain.com/v2026
Auth
Bearer key or access_key
Format
JSON over HTTPS
Version
Pinned in the path · v2026
The full reference.
Ten operations · segments, identities, events, pagination, errors.