# WhoAPI

**Canonical:** https://apis.io/providers/whoapi/  
**Website:** https://whoapi.com  
**APIs profiled:** 1

WhoAPI (founded 2011, WhoAPI Inc.) is a domain-intelligence API company that exposes WHOIS records, real-time domain availability across hundreds of TLDs, domain age, domain reputation/score, SSL certificate inspection, email score, IP/domain blacklist checks, and website screenshots through a single key-authenticated REST endpoint (api.whoapi.com). Every request is an HTTP GET selecting a task with the `r` parameter and returning gzip-compressed JSON with a numeric `status` and human-readable `status_desc`. It serves cybersecurity teams, domain registrars, SEO agencies, and fraud-detection systems, with first-party and community SDKs for Ruby, Python, Go, and R.

## Kin Score — 56.2 / 100 (strong)

Scored 2026-08-17 under rubric 0.11.0. Trend: rising (+10.3 from 45.9).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 66.4 |
| Governance | 11.5 |
| Operational Transparency | 60.5 |
| Developer Ergonomics | 69.0 |
| Commercial Clarity | 44.7 |

## Agent readiness — 46.6 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | yes |
| MCP Server | derived |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (1)

- **WhoAPI Domain Intelligence API** — A single HTTP GET endpoint (api.whoapi.com) exposing nine domain-intelligence tasks selected by the `r` query parameter — whois, taken (availability), cert (SSL), domainscore an...

## MCP servers (1)

- **whoapi-mcp.yml**

## Agentic access (1)

- **Whoapi Agentic Access** — 1 operation

## Security (2)

- **Whoapi Authentication** — apiKey · 1 scheme
- **Whoapi Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Whoapi Plans Pricing**

## Tags

Company, Domains, WHOIS, Domain Availability, SSL, Email Verification, Blacklist, Cybersecurity, Domain Intelligence, Screenshots, Reputation

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