WHMCS

WHMCS (Web Host Manager Complete Solution) is a leading web hosting automation platform that provides billing, client management, support, domain management, and provisioning automation for web hosting businesses. It offers a comprehensive API with 150+ commands covering clients, orders, invoicing, domains, support tickets, and system administration.

WHMCS publishes 7 API contracts indexed on the APIs.io network, including Authentication API, Billing API, Clients API, and 4 more. Tagged areas include Web Hosting, Billing Automation, Client Management, Domain Management, and Support Tickets.

The WHMCS catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

WHMCS’s developer surface includes authentication, documentation, API reference, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

39.4/100 developing ▬ flat Agent 20/100 agent aware Front door AI 3/6 light Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Web HostingBilling AutomationClient Management Domain Management Support Tickets Provisioning

What this lets a business do 3

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Customer Service Management

BC-430

Support

POST /?action=OpenTicket

Customer Relationship Management

BC-420

Clients

POST /?action=GetClients POST /?action=AddClient POST /?action=UpdateClient

Subscription Billing & Revenue Management

BC-4250

Billing

POST /?action=CreateInvoice

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 39.4/100 · developing

Contract Quality 10.7 / 19

Developer Ergonomics 7.1 / 15

Access Clarity 1.2 / 15

Operational Transparency 2.8 / 10

Contract Governance 2.5 / 9

Discoverability 5.0 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/whmcs/"><img src="https://apis.io/badge/whmcs/card.svg" alt="WHMCS on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

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/whmcs: 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Domains and DNS (registrars, registries, DNS)	undeclared	-	-	-
Stripe App Marketplace and Partner Ecosystem (builders on Stripe)	undeclared	-	-	-
DigitalOcean Marketplace (partner 1-click apps and SaaS add-ons)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 7

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

WHMCS Authentication API

OAuth and SSO authentication operations

WHMCS Billing API

Invoice, payment, and transaction management

WHMCS Clients API

Client account management operations

WHMCS Domains API

Domain registration and management

WHMCS Orders API

Order and quote management operations

WHMCS Support API

Ticket and announcement management

WHMCS System API

System administration and configuration

Scroll for all 7

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

WHMCS Authentication API

OPEN COLLECTION

WHMCS Authentication Billing API

OPEN COLLECTION

WHMCS Authentication Clients API

OPEN COLLECTION

WHMCS Authentication Domains API

OPEN COLLECTION

WHMCS Authentication Orders API

OPEN COLLECTION

WHMCS Authentication Support API

OPEN COLLECTION

WHMCS Authentication System API

OPEN COLLECTION

WHMCS API

OPEN COLLECTION

Scroll for all 8

Pricing Plans 1

Published pricing tiers and plan structures.

Whmcs Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Whmcs Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Whmcs Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Whmcs Context

12 classes · 23 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

WHMCS — jsonschema rules

5 rules · 4 warnings 1 info

SPECTRAL

WHMCS API Rules

10 rules · 5 errors 5 warnings

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

WHMCS Client

19 properties

JSON SCHEMA

WHMCS Invoice

15 properties

JSON SCHEMA

WHMCS Support Ticket

16 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Whmcs Api Structure

0 properties

JSON STRUCTURE

Examples 4

Example request and response payloads for these APIs.

Whmcs Create Invoice Example

4 fields

EXAMPLE

Whmcs Get Clients Example

4 fields

EXAMPLE

Whmcs Open Ticket Example

4 fields

EXAMPLE

Whmcs Validate Login Example

4 fields

EXAMPLE

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Whmcs Authentication

apiKey · 1 scheme

SECURITY

Whmcs Domain Security

TLSv1.3 · DMARC

SECURITY

Whmcs Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Whmcs Agentic Access

19 operations · 10 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

Forums

Forums

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Marketplace

Marketplace

Source (apis.yml)

aid: whmcs
name: WHMCS
description: WHMCS (Web Host Manager Complete Solution) is a leading web hosting automation platform that provides billing,
  client management, support, domain management, and provisioning automation for web hosting businesses. It offers a comprehensive
  API with 150+ commands covering clients, orders, invoicing, domains, support tickets, and system administration.
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/whmcs.png
x-docs-platform: redocly
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-17
tags:
- Web Hosting
- Billing Automation
- Client Management
- Domain Management
- Support Tickets
- Provisioning
url: https://raw.githubusercontent.com/api-evangelist/whmcs/refs/heads/main/apis.yml
created: '2025-02-09'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: whmcs:whmcs-authentication-api
  name: WHMCS Authentication API
  description: OAuth and SSO authentication operations
  humanURL: https://developers.whmcs.com/
  baseURL: https://{your-domain}/includes/api.php
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/whmcs-authentication-api-openapi.yml
  - type: Documentation
    url: https://developers.whmcs.com/api/
  - type: APIReference
    url: https://developers.whmcs.com/api-reference/
  - type: APIIndex
    url: https://developers.whmcs.com/api/api-index/
  - type: GettingStarted
    url: https://developers.whmcs.com/api/getting-started/
  - type: Authentication
    url: https://developers.whmcs.com/api/authentication/
  - type: SampleCode
    url: https://developers.whmcs.com/api/sample-code/
  - type: GitHub
    url: https://github.com/WHMCS
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-client-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-invoice-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-ticket-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-structure/whmcs-api-structure.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-ld/whmcs-context.jsonld
  - type: SpectralRules
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/rules/whmcs-rules.yml
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/vocabulary/whmcs-vocabulary.yml
- aid: whmcs:whmcs-billing-api
  name: WHMCS Billing API
  description: Invoice, payment, and transaction management
  humanURL: https://developers.whmcs.com/
  baseURL: https://{your-domain}/includes/api.php
  tags:
  - Billing
  properties:
  - type: OpenAPI
    url: openapi/whmcs-billing-api-openapi.yml
  - type: Documentation
    url: https://developers.whmcs.com/api/
  - type: APIReference
    url: https://developers.whmcs.com/api-reference/
  - type: APIIndex
    url: https://developers.whmcs.com/api/api-index/
  - type: GettingStarted
    url: https://developers.whmcs.com/api/getting-started/
  - type: Authentication
    url: https://developers.whmcs.com/api/authentication/
  - type: SampleCode
    url: https://developers.whmcs.com/api/sample-code/
  - type: GitHub
    url: https://github.com/WHMCS
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-client-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-invoice-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-ticket-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-structure/whmcs-api-structure.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-ld/whmcs-context.jsonld
  - type: SpectralRules
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/rules/whmcs-rules.yml
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/vocabulary/whmcs-vocabulary.yml
- aid: whmcs:whmcs-clients-api
  name: WHMCS Clients API
  description: Client account management operations
  humanURL: https://developers.whmcs.com/
  baseURL: https://{your-domain}/includes/api.php
  tags:
  - Clients
  properties:
  - type: OpenAPI
    url: openapi/whmcs-clients-api-openapi.yml
  - type: Documentation
    url: https://developers.whmcs.com/api/
  - type: APIReference
    url: https://developers.whmcs.com/api-reference/
  - type: APIIndex
    url: https://developers.whmcs.com/api/api-index/
  - type: GettingStarted
    url: https://developers.whmcs.com/api/getting-started/
  - type: Authentication
    url: https://developers.whmcs.com/api/authentication/
  - type: SampleCode
    url: https://developers.whmcs.com/api/sample-code/
  - type: GitHub
    url: https://github.com/WHMCS
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-client-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-invoice-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-ticket-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-structure/whmcs-api-structure.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-ld/whmcs-context.jsonld
  - type: SpectralRules
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/rules/whmcs-rules.yml
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/vocabulary/whmcs-vocabulary.yml
- aid: whmcs:whmcs-domains-api
  name: WHMCS Domains API
  description: Domain registration and management
  humanURL: https://developers.whmcs.com/
  baseURL: https://{your-domain}/includes/api.php
  tags:
  - Domains
  properties:
  - type: OpenAPI
    url: openapi/whmcs-domains-api-openapi.yml
  - type: Documentation
    url: https://developers.whmcs.com/api/
  - type: APIReference
    url: https://developers.whmcs.com/api-reference/
  - type: APIIndex
    url: https://developers.whmcs.com/api/api-index/
  - type: GettingStarted
    url: https://developers.whmcs.com/api/getting-started/
  - type: Authentication
    url: https://developers.whmcs.com/api/authentication/
  - type: SampleCode
    url: https://developers.whmcs.com/api/sample-code/
  - type: GitHub
    url: https://github.com/WHMCS
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-client-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-invoice-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-ticket-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-structure/whmcs-api-structure.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-ld/whmcs-context.jsonld
  - type: SpectralRules
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/rules/whmcs-rules.yml
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/vocabulary/whmcs-vocabulary.yml
- aid: whmcs:whmcs-orders-api
  name: WHMCS Orders API
  description: Order and quote management operations
  humanURL: https://developers.whmcs.com/
  baseURL: https://{your-domain}/includes/api.php
  tags:
  - Order
  tags_raw:
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/whmcs-orders-api-openapi.yml
  - type: Documentation
    url: https://developers.whmcs.com/api/
  - type: APIReference
    url: https://developers.whmcs.com/api-reference/
  - type: APIIndex
    url: https://developers.whmcs.com/api/api-index/
  - type: GettingStarted
    url: https://developers.whmcs.com/api/getting-started/
  - type: Authentication
    url: https://developers.whmcs.com/api/authentication/
  - type: SampleCode
    url: https://developers.whmcs.com/api/sample-code/
  - type: GitHub
    url: https://github.com/WHMCS
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-client-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-invoice-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-ticket-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-structure/whmcs-api-structure.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-ld/whmcs-context.jsonld
  - type: SpectralRules
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/rules/whmcs-rules.yml
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/vocabulary/whmcs-vocabulary.yml
- aid: whmcs:whmcs-support-api
  name: WHMCS Support API
  description: Ticket and announcement management
  humanURL: https://developers.whmcs.com/
  baseURL: https://{your-domain}/includes/api.php
  tags:
  - Support
  properties:
  - type: OpenAPI
    url: openapi/whmcs-support-api-openapi.yml
  - type: Documentation
    url: https://developers.whmcs.com/api/
  - type: APIReference
    url: https://developers.whmcs.com/api-reference/
  - type: APIIndex
    url: https://developers.whmcs.com/api/api-index/
  - type: GettingStarted
    url: https://developers.whmcs.com/api/getting-started/
  - type: Authentication
    url: https://developers.whmcs.com/api/authentication/
  - type: SampleCode
    url: https://developers.whmcs.com/api/sample-code/
  - type: GitHub
    url: https://github.com/WHMCS
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-client-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-invoice-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-ticket-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-structure/whmcs-api-structure.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-ld/whmcs-context.jsonld
  - type: SpectralRules
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/rules/whmcs-rules.yml
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/vocabulary/whmcs-vocabulary.yml
- aid: whmcs:whmcs-system-api
  name: WHMCS System API
  description: System administration and configuration
  humanURL: https://developers.whmcs.com/
  baseURL: https://{your-domain}/includes/api.php
  tags:
  - System
  properties:
  - type: OpenAPI
    url: openapi/whmcs-system-api-openapi.yml
  - type: Documentation
    url: https://developers.whmcs.com/api/
  - type: APIReference
    url: https://developers.whmcs.com/api-reference/
  - type: APIIndex
    url: https://developers.whmcs.com/api/api-index/
  - type: GettingStarted
    url: https://developers.whmcs.com/api/getting-started/
  - type: Authentication
    url: https://developers.whmcs.com/api/authentication/
  - type: SampleCode
    url: https://developers.whmcs.com/api/sample-code/
  - type: GitHub
    url: https://github.com/WHMCS
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-client-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-invoice-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-schema/whmcs-ticket-schema.json
  - type: JSONStructure
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-structure/whmcs-api-structure.json
  - type: JSONLDContext
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/json-ld/whmcs-context.jsonld
  - type: SpectralRules
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/rules/whmcs-rules.yml
  - type: Vocabulary
    url: https://raw.githubusercontent.com/api-evangelist/whmcs/main/vocabulary/whmcs-vocabulary.yml
common:
- type: Plans
  url: plans/whmcs-plans-pricing.yml
- type: RateLimits
  url: rate-limits/whmcs-rate-limits.yml
- type: FinOps
  url: finops/whmcs-finops.yml
- type: CapabilityMap
  url: capabilities/whmcs-capability-edges.yml
  name: WHMCS Business Capability Map
- type: AgenticAccess
  url: agentic-access/whmcs-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/whmcs-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/whmcs-domain-security.yml
- type: Authentication
  url: authentication/whmcs-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/whmcs-ltd
- type: Website
  url: https://www.whmcs.com/
- type: Documentation
  url: https://developers.whmcs.com/
- type: APIReference
  url: https://developers.whmcs.com/api-reference/
- type: Blog
  url: https://blog.whmcs.com/
- type: GitHubOrganization
  url: https://github.com/WHMCS
- type: Marketplace
  url: https://marketplace.whmcs.com/
- type: Forums
  url: https://whmcs.community/
- type: StatusPage
  url: https://whmcsstatus.com/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/whmcs"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/whmcs/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/whmcs/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

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A second provider on the same verified email joins the account you already have.