Vessel Sales Engagement Unified API
The Vessel Sales Engagement Unified API normalizes sales engagement objects across Outreach, Salesloft, Apollo and similar tools under /api/unifications/engagement, covering users, contacts, accounts, sequences, tasks, calls, emails and mailboxes behind one schema. Published by Vessel as OpenAPI 3.1.0 with 20 operations.
Vessel Sales Engagement Unified API is one of 20 APIs that Vessel publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Sales Engagement, Sequences, Unified-API, Outreach, and Salesloft. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and a GitHub repository.
This API exposes 20 operations across 20 paths, organized into 2 resource areas, and defines 22 schemas. It is described by OpenAPI 3.1.0, at version 1.0.
Requests are made against a single base URL, https://api.vessel.dev.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Vessel Sales Engagement Unified API declares
1 security scheme
for authenticating requests.
An API key is passed in the header as vessel-api-token (VesselAPIToken).
By default, every request must be authenticated.
Paths & Operations 20
Across 20 paths, the API surfaces 20 operations — 20 POST. They span 2 resource areas: Operations, Accounts. Each is listed below with its method, path, parameters, and response codes.
Schemas 22
The contract defines 22 schemas that model the data the API accepts and returns. The most detailed are Contact (16 properties), Account (13 properties), Sequence (13 properties), Email (11 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 Vessel 12
Other APIs Vessel publishes across the network.
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