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Sendoso Marketplace and SmartSend API

Browse the Sendoso marketplace catalog, get AI-selected gift recommendations for a recipient, and send either. Four operations on /api/v3, scoped to `marketplace` and `smartsend`.

Sendoso Marketplace and SmartSend API is one of 8 APIs that Sendoso publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Marketplace, SmartSend, and Recommendations. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, authentication docs, and rate-limit docs.

This API exposes 2 operations across 2 paths, and defines 6 schemas. It is described by OpenAPI 3.2.0, at version 3.

Requests are made against 2 base URLs: https://app.sendoso.com, https://app.staging.sendo.so.

2 operations 2 paths 6 schemas 1 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
3
Base URL
https://app.sendoso.com/api/v3
Authentication
OAuth 2.0
Resource Areas
1

Authentication & Security 1

Sendoso Marketplace and SmartSend API declares 1 security scheme for authenticating requests. It supports OAuth 2.0 (OAuth2) using the authorizationCode flow, exposing 5 scopes. By default, every request must be authenticated.

  • OAuth2 — OAuth 2.0 Authorization Code grant, same authorization server as the Core API. Marketplace operations require the marketplace scope; SmartSend operations requi…

Paths & Operations 2

Across 2 paths, the API surfaces 2 operations — 1 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Marketplace 2

The Sendoso marketplace catalog and sending from it.

GET
/api/v3/marketplace/products
Get Marketplace Products
getMarketplaceProducts 6 params → 200401429
POST
/api/v3/marketplace/products/send
Send a Product (variant)
sendMarketplaceProduct body → 200401429

Schemas 6

The contract defines 6 schemas that model the data the API accepts and returns. The most detailed are Product (4 properties), Variant (3 properties), CategoryGroup (2 properties), MarketplaceSendResult (2 properties). Each schema is shown below with its type and property counts.

Product
object
4 properties
Variant
object
3 properties 1 required
Error
object
2 properties
CursorPagination
object
2 properties
MarketplaceSendResult
object
2 properties 2 required
CategoryGroup
object
2 properties 2 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

sendoso-marketplace-api-openapi.yml Raw ↑

Other APIs Sendoso publishes across the network.

Sendoso Webhooks
Sendoso MCP Server
Sendoso Campaigns API
Sendoso Sends API
Sendoso Smart Send API
Sendoso Teams API
Sendoso Users API
Where this information came from

This is an independent, third-party profile of Sendoso Marketplace and SmartSend API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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