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wsystem-dev Billing API

The Billing API from wsystem-dev — 3 operation(s) for billing.

wsystem-dev Billing API is one of 8 APIs that wsystem-dev publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 6 JSON Schema definitions.

Tagged areas include Billing. The published artifact set on APIs.io includes an OpenAPI specification and 6 JSON Schemas.

This API exposes 3 operations across 3 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 0.3.61.

Requests are made against a single base URL, https://api.wsystem.dev.

3 operations 3 paths 3 schemas 2 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
0.3.61
Base URL
https://api.wsystem.dev
Authentication
API Key
Contact
Resource Areas
1

Authentication & Security 1

wsystem-dev Billing API declares 1 security scheme for authenticating requests. An API key is passed in the header as X-API-Key (ApiKeyAuth).

  • ApiKeyAuth — Optional monthly-plan key. Without it: free tier, then x402 pay-per-call.

Paths & Operations 3

Across 3 paths, the API surfaces 3 operations — 2 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Billing 3
GET
/billing/plans
Monthly API-key plans
billingPlans → 200
GET
/billing/usage
Your API key's plan, monthly quota and units used (free; no units consumed)
billingUsage → 200
POST
/billing/checkout
Start Stripe Checkout for a monthly plan
billingCheckout body → 200422

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are CheckoutReq (11 properties), ValidationError (5 properties), HTTPValidationError (1 property). Each schema is shown below with its type and property counts.

ValidationError
object
5 properties 3 required
CheckoutReq
object
11 properties 1 required
HTTPValidationError
object
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

wsystem-dev-billing-api-openapi.yml Raw ↑

Other APIs wsystem-dev publishes across the network.

wsystem-dev Company API
wsystem-dev E Invoice API
wsystem-dev EORI API
wsystem-dev Health API
wsystem-dev KYB API
wsystem-dev Sanctions API
wsystem-dev VAT API
Where this information came from

This is an independent, third-party profile of wsystem-dev Billing 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.

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