# Domain Sentinel

**Canonical:** https://apis.io/providers/domain-sentinel-com/  
**Website:** https://domain-sentinel.com/  
**APIs profiled:** 1

Domain Sentinel provides domain verification and monitoring tools built on the RDAP protocol. It offers fast lookups, watchlists, email alerts for availability, expiry, and WHOIS changes, as well as DNS and TLS certificate monitoring. Users can manage domains via a remote MCP server integrated with AI assistants, and access pricing plans ranging from free to paid tiers.

## Kin Score — 48.2 / 100 (developing)

Scored 2026-11-06 under rubric 0.27.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 63.2 |
| Contract Governance | 22.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 42.9 |
| Access Clarity | 65.8 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 24.5 (matched via fallback).

## Agent readiness — 35.6 (agent-ready)

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

## Access

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

## APIs (1)

- **Domain Sentinel Lookup API** — The Lookup API from Domain Sentinel — 1 operation(s) for lookup.

## Agentic access (1)

- **Domain Sentinel Com Agentic Access** — 1 operation

## Security (2)

- **Domain Sentinel Com Authentication** — http · 1 scheme
- **Domain Sentinel Com Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Plans (1)

- **Domain Sentinel Com Plans Pricing**

## Tags

Domain Monitoring, WHOIS Lookup, RDAP API, Brand Protection, Expiry Alerts, DNS Monitoring

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