NameSilo

NameSilo is a domain registrar and web services provider offering domain registration, hosting, email, and SSL solutions. NameSilo exposes a Domain API enabling programmatic domain search, registration, and management via HTTPS GET requests with XML or JSON responses, plus an MCP server for AI agents.

NameSilo is listed with 1 API on the APIs.io network. Tagged areas include Domains, Domain Registrar, DNS, Hosting, and SSL.

NameSilo’s developer surface includes engineering blog, documentation, signup flow, pricing, support, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

16.3/100 emerging ▬ flat Agent 1/100 human only Front door AI 3/6 light saas Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

AccessFreemium

1 API

Domains Domain Registrar DNS Hosting SSL Email

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 16.3/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 5.4 / 17

Operational Transparency 1.2 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 1/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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

Regulatory Posture applies to this provider. Its tags matched the Education & Research 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/namesilo: 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)	regulated	19.2 (thin)	-	1

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.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

DNS

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 1

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

NameSilo Domain API

The NameSilo Domain API allows developers to search, register, transfer, renew, and manage domains programmatically. All API calls use HTTPS GET requests and return XML or JSON....

Pricing Plans 1

Published pricing tiers and plan structures.

Namesilo Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Namesilo Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Namesilo Finops

FINOPS

Security Posture 1

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

Namesilo Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup

Signup

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

Commercial 5

Pricing, plans, and the legal terms of use

Plans

FinOps

Pricing

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

Blog

Blog

LinkedIn

Website

Website

Source (apis.yml)

aid: namesilo
name: NameSilo
description: NameSilo is a domain registrar and web services provider offering domain registration, hosting, email, and SSL
  solutions. NameSilo exposes a Domain API enabling programmatic domain search, registration, and management via HTTPS GET
  requests with XML or JSON responses, plus an MCP server for AI agents.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/namesilo.png
tags:
- Domains
- Domain Registrar
- DNS
- Hosting
- SSL
- Email
created: '2025-02-09'
modified: '2026-10-06'
url: https://raw.githubusercontent.com/api-evangelist/namesilo/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: namesilo:namesilo
  name: NameSilo Domain API
  description: The NameSilo Domain API allows developers to search, register, transfer, renew, and manage domains programmatically.
    All API calls use HTTPS GET requests and return XML or JSON. A sandbox environment is available for testing.
  humanURL: https://www.namesilo.com/
  tags:
  - Domains
  - Domain Registrar
  - DNS
  properties:
  - type: Documentation
    url: https://www.namesilo.com/api-reference
  - type: Reference
    url: https://www.namesilo.com/api-reference
  - type: MCP Server
    url: https://mcp.namesilo.com
common:
- type: Plans
  url: plans/namesilo-plans-pricing.yml
- type: RateLimits
  url: rate-limits/namesilo-rate-limits.yml
- type: FinOps
  url: finops/namesilo-finops.yml
- url: https://www.namesilo.com/blog
  type: Blog
- type: DomainSecurity
  url: security/namesilo-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/namesilo
- type: LinkedIn
  url: https://www.linkedin.com/company/namesilo
- type: Website
  url: https://www.namesilo.com/
- type: Documentation
  url: https://www.namesilo.com/api-reference
- type: Signup
  url: https://www.namesilo.com/account/api-manager
- type: Pricing
  url: https://www.namesilo.com/pricing
- type: Support
  url: https://www.namesilo.com/support
- type: TermsOfService
  url: https://www.namesilo.com/terms-and-conditions
- type: PrivacyPolicy
  url: https://www.namesilo.com/privacy-policy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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Tools for providers

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find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
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.

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