# WHMCS

**Canonical:** https://apis.io/providers/whmcs/  
**Website:** https://www.whmcs.com/  
**APIs profiled:** 7

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.

## Kin Score — 37.4 / 100 (thin)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 37.4).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 62.8 |
| Governance | 13.6 |
| Contract Governance | 13.6 |
| Operational Transparency | 18.4 |
| Developer Ergonomics | 35.7 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 19.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (7)

- **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

## Agentic access (1)

- **Whmcs Agentic Access** — 19 operations · 19 acting

## Security (3)

- **Whmcs Authentication** — apiKey · 1 scheme
- **Whmcs Domain Security** — TLSv1.3 · DMARC
- **Whmcs Vulnerability Disclosure** — Hackerone · security.txt · contact published

## Plans (1)

- **Whmcs Plans Pricing**

## Tags

Web Hosting, Billing Automation, Client Management, Domain Management, Support Tickets, Provisioning

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/whmcs/). Scores are computed from the provider's own public artifacts under a published rubric.