SendOwl

SendOwl is a UK-based digital commerce platform that lets creators and small businesses sell digital products, subscriptions, memberships, license keys, drip-delivered courses and physical goods, with hosted checkout, automated file delivery, PDF stamping, affiliate programs, discount codes and EU VAT handling. It exposes a public REST API at api.sendowl.com covering products, bundles (packages), subscriptions, drip items, orders, discounts and licenses in both JSON and XML, authenticated with HTTP Basic using an account API key and secret, alongside an outbound webhook surface signed with HMAC-SHA256 and a browser-side sendowl.js library that drives the lightbox checkout and cart widget.

SendOwl publishes 1 API on the APIs.io network. Tagged areas include Company, E-Commerce, Digital Products, Payments, and Subscription.

The SendOwl catalog on APIs.io includes 1 event-driven AsyncAPI specification.

SendOwl’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

54.7/100 strong ▬ flat Agent 25/100 agent aware saas Full breakdown ↓
scored 2026-09-06 · rubric v0.19.0

AccessPaid

1 APIs

Company E-Commerce Digital Products Payments Subscription Checkout Memberships Licensing Creator Economy Webhook

Kin Score

Kin Score How this is scored →
scored 2026-09-06 · rubric v0.19.0

Composite quality — 54.7/100 · strong

Contract Quality 8.8 / 21

Developer Ergonomics 10.9 / 17

Access Clarity 13.0 / 17

Operational Transparency 5.2 / 11

Contract Governance 1.9 / 10

Discoverability 5.8 / 9

Regulatory Posture 5.9 / 15

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/sendowl: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

SignUp

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

Components

DataModel

Webhooks

Scroll for all 7

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: sendowl
name: SendOwl
description: SendOwl is a UK-based digital commerce platform that lets creators and small businesses sell digital products,
  subscriptions, memberships, license keys, drip-delivered courses and physical goods, with hosted checkout, automated file
  delivery, PDF stamping, affiliate programs, discount codes and EU VAT handling. It exposes a public REST API at api.sendowl.com
  covering products, bundles (packages), subscriptions, drip items, orders, discounts and licenses in both JSON and XML, authenticated
  with HTTP Basic using an account API key and secret, alongside an outbound webhook surface signed with HMAC-SHA256 and a
  browser-side sendowl.js library that drives the lightbox checkout and cart widget.
url: https://raw.githubusercontent.com/api-evangelist/sendowl/refs/heads/main/apis.yml
x-type: company
x-source: harvest:marketing-integration-graph
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
specificationVersion: '0.23'
created: '2026-08-12'
modified: '2026-08-12'
image: https://www.sendowl.com/twitter-image.png
tags:
- Company
- E-Commerce
- Digital Products
- Payments
- Subscription
- Checkout
- Memberships
- Licensing
- Creator Economy
- Webhook
tags_raw:
- Company
- E-Commerce
- Digital Products
- Payments
- Subscriptions
- Checkout
- Memberships
- Licensing
- Creator Economy
- Webhooks
apis:
- aid: sendowl:sendowl-api
  name: SendOwl API
  description: The SendOwl REST API provides third-party applications access to a merchant account's products, bundles (packages),
    subscriptions, drip items, orders, discounts, discount codes and license keys. Requests and responses are available in
    both JSON and XML selected via the Accept header, index actions are paginated with page/per_page (max 50), and authorization
    uses HTTP Basic with the API key and secret generated in the SendOwl dashboard.
  humanURL: https://dashboard.sendowl.com/developers/api/introduction
  baseURL: https://api.sendowl.com/api/v1
  tags:
  - Product
  - Order
  - Subscription
  - Discounts
  - Licenses
  - Bundles
  tags_raw:
  - Products
  - Orders
  - Subscriptions
  - Discounts
  - Licenses
  - Bundles
  properties:
  - type: APIReference
    url: https://dashboard.sendowl.com/developers/api/introduction
  - type: Authentication
    url: authentication/sendowl-authentication.yml
  - type: Conventions
    url: conventions/sendowl-conventions.yml
  - type: ErrorCatalog
    url: errors/sendowl-problem-types.yml
  - type: RateLimits
    url: rate-limits/sendowl-rate-limits.yml
  - type: DataModel
    url: data-model/sendowl-data-model.yml
  - type: Webhooks
    url: asyncapi/sendowl-webhooks.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/sendowl-domain-security.yml
- type: Website
  url: https://sendowl.com/
- type: DeveloperPortal
  url: https://dashboard.sendowl.com/developers
- type: Documentation
  url: https://help.sendowl.com/help
- type: APIReference
  url: https://dashboard.sendowl.com/developers/api/introduction
- type: GettingStarted
  url: https://help.sendowl.com/help/developer-overview-custom-integrations
- type: Support
  url: https://help.sendowl.com/help
- type: Blog
  url: https://www.sendowl.com/blog
- type: GitHubOrganization
  url: https://github.com/SendOwl
- type: Pricing
  url: https://www.sendowl.com/pricing
- type: SignUp
  url: https://www.sendowl.com/signup
- type: TermsOfService
  url: https://www.sendowl.com/terms
- type: PrivacyPolicy
  url: https://www.sendowl.com/privacy
- type: StatusPage
  url: https://sendowl.status.io/
- type: Plans
  url: plans/sendowl-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sendowl-rate-limits.yml
- type: Authentication
  url: authentication/sendowl-authentication.yml
- type: Conventions
  url: conventions/sendowl-conventions.yml
- type: ErrorCatalog
  url: errors/sendowl-problem-types.yml
- type: Lifecycle
  url: lifecycle/sendowl-lifecycle.yml
- type: Conformance
  url: conformance/sendowl-conformance.yml
- type: Packages
  url: packages/sendowl-packages.yml
- type: Components
  url: components/sendowl-components.yml
- type: Sandbox
  url: sandbox/sendowl-sandbox.yml
- type: DataModel
  url: data-model/sendowl-data-model.yml
- type: Webhooks
  url: asyncapi/sendowl-webhooks.yml
- type: LLMsTxt
  url: llms/sendowl-llms.txt
x-vouched-by:
- Drip
- MailerLite
x-vouch-count: 2
x-enrichment:
  date: '2026-08-12'
  status: enriched
  artifacts_added: 15
  pass: local-v1

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SendOwl

Kin Score

APIs 1

SendOwl API

Pricing Plans 1

Sendowl Plans Pricing

Rate Limits 1

Sendowl Rate Limits

Event Specifications 1

Sendowl Webhooks

Security Posture 2

Sendowl Authentication

Sendowl Domain Security

Resources