# rdapapi-io

**Canonical:** https://apis.io/providers/rdapapi-io/  
**Website:** https://rdapapi.io/  
**APIs profiled:** 1

RDAP API provides developers with a modern, JSON-native WHOIS replacement, delivering normalized domain registration data across over 1,200 top-level domains. It offers a 7‑day free trial and paid plans starting at $9 per month, enabling easy integration of domain lookup capabilities into applications without parsing raw WHOIS text.

## Kin Score — 72.3 / 100 (exemplar)

Scored 2026-10-31 under rubric 0.25.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 65.4 |
| Contract Governance | 79.1 |
| Operational Transparency | 70.5 |
| Developer Ergonomics | 61.2 |
| Access Clarity | 73.2 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 40.2 (matched via fallback).

## Agent readiness — 59.1 (agent-ready)

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

## APIs (7)

- **rdapapi-io ASN API** — Look up an Autonomous System Number.
- **rdapapi-io Domain API** — Look up one domain, or up to 10 in a single call with the bulk endpoint.
- **rdapapi-io Entity API** — Look up a contact or organization by RDAP handle.
- **rdapapi-io Health API** — Uptime checks.
- **rdapapi-io IP API** — Look up an IP address or CIDR block.
- **rdapapi-io Nameserver API** — Look up a nameserver host record, for the registries that publish one.
- **rdapapi-io TLDs API** — Check which TLDs are supported, in bulk or one at a time.

## Agentic access (1)

- **Rdapapi Io Agentic Access** — 9 operations · 1 acting

## Security (3)

- **Rdapapi Io Authentication** — 1 scheme
- **Rdapapi Io Domain Security** — TLSv1.3 · DMARC
- **Rdapapi Io Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Rdapapi Io Plans Pricing**

## Tags

Company, RDAP, Domain, API, Whois

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