Omnisend Segments API
The Segments API from Omnisend — 6 operation(s) for segments. Version 2026-03-15, harvested from Omnisend's published contract.
Omnisend Segments API is one of 15 APIs that Omnisend publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
This API exposes 2 JSON Schema definitions.
Tagged areas include Segments. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, authentication docs, a JSON-LD context, and 2 JSON Schemas.
This API exposes 6 operations across 3 paths, and defines 13 schemas. It is described by OpenAPI 3.0.0, at version 5.0.
Requests are made against a single base URL, https://api.omnisend.com/api.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 2
Omnisend Segments API declares
2 security schemes
for authenticating requests.
An API key is passed in the header as Authorization (ApiKeyAuth).
It supports OAuth 2.0 (Bearer) using the clientCredentials flow, exposing 2 scopes.
ApiKeyAuth— API Key authentication. Value format: 'Omnisend-API-Key {api-key}'
Paths & Operations 6
Across 3 paths, the API surfaces 6 operations — 1 DELETE, 3 GET, 1 POST, 1 PUT. Each is listed below with its method, path, parameters, and response codes.
Schemas 13
The contract defines 13 schemas that model the data the API accepts and returns. The most detailed are GetSegmentResponse (8 properties), RateLimitProblem (6 properties), ValidationProblem (6 properties), Problem (5 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Omnisend 12
Other APIs Omnisend publishes across the network.
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