established · 2.0

Domains

Score 29.5 / 100 125 providers 115 APIs Search apis.io →
Variants seen in the corpus: Domainsdomains

Providers using this tag (125)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 9 Complete, well-documented, and agent-ready
Strong 22 Solid coverage with minor gaps
Developing 42 Usable, with meaningful gaps to close
HeyMiloCompanyRecruitingHiringHuman Resources18 APIs54.0AppDirectCompanyCommerceSubscription CommerceMarketplace75 APIs53.3SmitheryArtificial IntelligenceAgentsMCPRegistry9 APIs53.3UpGuardCompanyCybersecurityThird-Party Risk ManagementAttack Surface Management18 APIs53.3Amazon DataZoneData CatalogData GovernanceData ManagementData Sharing6 APIs52.8Origami RiskInsuranceUnited StatesProperty and CasualtyPolicy Administration9 APIs52.4SpecterOpsCompanyCybersecurityIdentityActive Directory45 APIs52.3ResendEmailDeveloper ToolsTransactional EmailMarketing Email13 APIs50.9CodesphereCompanySoftware-as-a-ServiceCloudDeployment10 APIs50.7BrightEdgeCompanySEOSearchContent45 APIs50.3Amazon CloudSearchCloudSearchSearchFull-Text SearchManaged2 APIs50.2BonjoroVideo MessagingCustomer EngagementCustomer SuccessSales Engagement1 API49.4PostHogA/B TestingAnalyticsFeature FlagsOpen-Source139 APIs49.3AhaSendEmailTransactional EmailDeveloper ToolsSMTP11 APIs49.2SwaggerHubAPI DesignAPI ManagementAPI RegistryDocumentation9 APIs48.4ScalewayArtificial IntelligenceCloud ComputingContainersDatabase74 APIs47.6SnipcartE-CommerceShopping CartOrderProduct9 APIs47.1SkimBitCompanyAffiliate MarketingContent MonetizationCommerce8 APIs46.9HerokuApplication DeploymentCloud PlatformDevOpsPlatform-as-a-Service14 APIs46.4InstapageLanding PagesConversion OptimizationMarketingA/B Testing12 APIs46.4WhoAPICompanyWHOISDomain Availability1 API45.3AivenManaged Data InfrastructureApache KafkaPostgreSQLOpenSearch34 APIs44.5SecuritizeTokenizationDigital SecuritiesReal World AssetsCapital Markets7 APIs43.9LobDirect MailPrintAddress Verification46 APIs43.6DNSFilterCompanyDNSSecurityContent Filtering45 APIs43.0D3CompanyCrypto InfrastructureDNS2 APIs42.9SmitheryArtificial IntelligenceLarge Language ModelsMCPAI Agents9 APIs42.4SupabaseBackend-as-a-ServicePostgreSQLOpen-SourceAuthentication21 APIs42.3ElementumCompanyArtificial IntelligenceAutomationWorkflows18 APIs42.2AnythingCompanyAi MlApp BuilderLow-Code14 APIs42.0DenoDeploymentEdgeJavaScriptRuntime11 APIs41.5EPFLUniversityHigher EducationEducationTechnical University9 APIs41.5VersCompanyComputeVirtualizationMicroVM12 APIs41.2_doneDeveloper ToolsUtility APIsAI Agentsagent-native27 APIs41.0OpenMetadataData CatalogMetadataData GovernanceData Lineage89 APIs40.9YextDigital PresenceBusiness ListingsLocation DataReviews24 APIs40.6SpaceshipCompanyDomain RegistrarDNS10 APIs40.4Digital OceanCloudComputeServersInfrastructure37 APIs39.9Apache JamesEmailIMAPJavaJMAP9 APIs39.8OpenStackCloud PlatformInfrastructure-as-a-ServiceOpen-SourceVirtualization22 APIs39.6TucowsCompanyInfrastructureDNS2 APIs39.5Unstoppable DomainsWeb3BlockchainDomain NamesNFT Domains33 APIs39.5
Thin 36 Limited public surface area
Rackspace TechnologyCloudManaged ServiceMulti-CloudInfrastructure26 APIs39.2SmartBearAPI DesignAPI DocumentationAPI TestingContract Testing7 APIs39.2TezosTezosBlockchainTzKTBaking Bad34 APIs39.1NaviStoneCompanyMarketingDirect MailAdvertising8 APIs38.9UnitrendsCompanyBackupDisaster RecoveryData Protection11 APIs38.7Union.aiArtificial IntelligenceMLOrchestrationWorkflows9 APIs38.2CompleteDNSDNSDNS HistoryDomain Intelligence2 APIs37.9Aikido SecurityAI PentestingAPI SecurityApplication SecurityCloud Security12 APIs37.4watchTowrCompanySecurityCybersecurityAttack Surface Management20 APIs37.4WHMCSWeb HostingBilling AutomationClient ManagementDomain Management7 APIs37.4BrightEdge TechnologiesSEOContent MarketingSearchMarketing44 APIs35.8MailPaceEmailTransactional EmailMessagingSMTP4 APIs35.6cPanelControl PanelDNSEmail7 APIs34.9MailgunEmailTransactional EmailSMTPEmail Validation8 APIs34.0SSL/TLSSSL/TLSTLSCertificatesPKI7 APIs34.0ChameleonProductIn-App GuidanceOnboardingSurveys18 APIs33.3ZeaburPlatform-as-a-ServiceDeploymentCloudDevOps6 APIs33.0BackupifySaaS BackupData ProtectionCloud BackupMicrosoft-3652 APIs32.3NucleiSecurity TestingTestingVulnerability ScannerDAST36 APIs32.0LogtoAuthenticationAuthorizationIdentityOIDC39 APIs31.4OpenproviderDNSHostingReseller35 APIs31.4GandiDNSDomain RegistrarEmail17 APIs30.6FAO FAOSTATAgriculturefood securityStatisticsTrade7 APIs29.9ConvertExperimentationA/B TestingConversion OptimizationPersonalization33 APIs29.7linode23 APIs29.6QuantCDNCDNEdgeStatic HostingJAMstack38 APIs29.2NewfoldCompanyWeb HostingWeb Presence3 APIs29.1Scalable PlatformsCloud InfrastructureDeploymentDeveloper ExperienceDevOps7 APIs29.1Architecture PatternArchitecture PatternsSoftware ArchitectureDesign PatternsSystem Design3 APIs29.0HostBillAutomationBillingDomain RegistrationWeb Hosting8 APIs28.9WebsiteProsCompanyWebsite BuilderWeb Hosting1 API28.71inchDeFiDEX AggregatorSwapLimit Orders15 APIs28.2GoDaddyAftermarketCertificatesDNS7 APIs28.2PrimitiveCompany22 APIs28.0VirtualminCompanyWeb HostingControl PanelServer Management1 API27.1OneTrustPrivacyGRCComplianceConsent12 APIs26.5
Emerging 13 Early or largely undocumented
Minimal 3 Almost no public developer surface

APIs with this tag (114)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 10 Complete, well-documented, and agent-ready
Strong 24 Solid coverage with minor gaps
MailerSend Domains APIThe Domains API from MailerSend — 2 operation(s) for domains.64.6Valimail Domains APIThe Domains API from Valimail — 2 operation(s) for domains.64.6Palo Alto Networks Domains APIDomain categorization and threat intelligence lookups.63.7Extole Domains APIThe Domains API from Extole — 10 operation(s) for domains.63.1Laravel Domains APIThe Domains API from Laravel — 3 operation(s) for domains.62.5Cloudflare Domains APIAttach and detach custom domains to Worker scripts.62.0Cloudflare Registrar APIThe Cloudflare Registrar API allows developers to manage domain registrations at cost. It provides endpoint...62.0IPinfo domains APIHosted Domains API.61.9Lilt Domains APIThe Domains API from Lilt — 1 operation(s) for domains.61.9Freestyle Domains APIAPIs for managing domains. This is only relevant when you want to start to deploy to custom domains. Please...61.7OutSystems Domains APIManage custom domains for environments.61.2Koyeb Domains APIThe Domains API from Koyeb — 3 operation(s) for domains.60.5Amazon CodeArtifact Domains APIThe Domains API from Amazon CodeArtifact — 1 operation(s) for domains.57.9Sylvia API Domains APIThe Domains API from Sylvia API — 2 operation(s) for domains.57.5Clerk Domains APIDomains represent each instance's URLs and DNS setup.57.1WordPress.com REST API - wpcom/v2 namespaceThe WordPress.com and Jetpack platform extension namespace — 1,716 operations covering hosting and code dep...56.8Dub Domains APIThe Domains API from Dub — 4 operation(s) for domains.56.1Dub Domains APIList and manage custom domains associated with a Dub workspace, including SSL certificate provisioning and ...56.1Vercel WebhooksVercel Webhooks deliver platform events to a subscriber-configured HTTPS endpoint via HTTP POST with a JSON...55.9Amazon OpenSearch Service Domains APIOperations for creating and managing OpenSearch domains54.9AgentMail domains APIThe domains API from AgentMail — 4 operation(s) for domains.54.7Atlassian Domains APIManage verified domains for an organization.54.7Tenable Domains APIThe Tenable Managed Security Service Provider (MSSP) Portal API provides a secure and accessible way for MS...54.7Skilljar Domains APIThe Domains API from Skilljar — 4 operation(s) for domains.54.5
Developing 37 Usable, with meaningful gaps to close
HeyMilo Domains APIManage custom domains for white-labelled interview URLs.54.0AppDirect Domains APIThe Domains API from AppDirect — 3 operation(s) for domains.53.3Smithery domains APIThe domains API from Smithery — 2 operation(s) for domains.53.3UpGuard domains APIThe domains API from UpGuard — 3 operation(s) for domains.53.3Amazon DataZone Domains APIOperations for managing DataZone domains52.8Origami Risk Public APIThe core Origami Risk platform API — generic domain and entity CRUD (get, upsert, bulk insert, bulk upsert,...52.4SpecterOps Domains APIThe Domains API from SpecterOps — 16 operation(s) for domains.52.3Resend Domains APICreate and manage domains through the Resend API.50.9Codesphere domains APIThe domains API from Codesphere — 4 operation(s) for domains.50.7BrightEdge domains APIOperation related to domains50.3Amazon CloudSearch Domains APIOperations for creating and managing search domains50.2Bonjoro API V2REST API for the Bonjoro personal-video platform. Create and assign greets (video tasks) for one or many re...49.4PostHog domains APIThe domains API from PostHog — 5 operation(s) for domains.49.3AhaSend Domains APIManage sending domains49.2SwaggerHub Domains APIManage shared component domains48.4Scaleway Domains APIA container is provided with an automatically generated domain through which it is accessible. Alternativel...47.6Snipcart Domains APIManage allowed domains for your store47.1SkimBit Domains APIThe Domains API from SkimBit — 1 operation(s) for domains.46.9Heroku Domains APICustom domain management46.4Instapage Domains APIList the custom domains connected to an Instapage workspace, with connection status, SSL status and custom ...46.4Aiven Domains APIThe Domains API from Aiven — 3 operation(s) for domains.44.5Securitize Domains APIThe Domains API from Securitize — 74 operation(s) for domains.43.9Lob Domains APIThe Domains API from Lob — 2 operation(s) for domains.43.6DNSFilter Domains APIThe Domains API from DNSFilter — 3 operation(s) for domains.43.0Smithery domains APIThe domains API from Smithery — 2 operation(s) for domains.42.4Supabase Domains APIConfigure custom domains and vanity subdomains for projects.42.3Elementum Domains APIManage organization domains42.2Anything Domains APIThe Domains API from Anything — 3 operation(s) for domains.42.0Deno Domains APIRegister and manage custom domains with TLS certificate support41.5Vers domains APIThe domains API from Vers — 2 operation(s) for domains.41.2OpenMetadata Domains APIA `Data Product` or `Data as a Product` is a logical unit that contains all components to process and store...40.9Yext Domains APIThe Domains API from Yext — 7 operation(s) for domains.40.6Digital Ocean Domains APIDomain resources are domain names that you have purchased from a domain name registrar that you are managin...39.9Apache James Domains APIEmail domain management39.8OpenStack Domains APIDomain management for multi-tenancy.39.6OpenSRS Domains and TLS/SSL APIWholesale reseller API for domain-name lookup, registration, transfer, renewal, DNS-zone management and TLS...39.5Unstoppable Domains domains APIManage your custody domains.39.5
Thin 32 Limited public surface area
Rackspace Technology Domains APIDNS domain (zone) operations.39.2SmartBear Domains APIManage reusable domain definitions39.2Tezos Domains APIThe Domains API from Tezos — 3 operation(s) for domains.39.1NaviStone Domains APIDomain management38.9Unitrends Domains APIThe Domains API from Unitrends — 1 operation(s) for domains.38.7Union.ai Domains APIThe Domains API from Union.ai — 1 operation(s) for domains.38.2Aikido Security Domains APIThe Domains API from Aikido Security — 3 operation(s) for domains.37.4watchTowr Domains APIThe Domains API from watchTowr — 3 operation(s) for domains.37.4WHMCS Domains APIDomain registration and management37.4BrightEdge Technologies domains APIOperation related to domains35.8MailPace Domains APIManage sending domains and DKIM verification.35.6Mailgun Domains APIThe Domains API from Mailgun — 2 operation(s) for domains.34.0SSL/TLS Domains APIDomain verification and management34.0Chameleon Domains APIThe Domains API from Chameleon — 2 operation(s) for domains.33.3Zeabur Domains APIBind generated (*.zeabur.app) or custom domains to a service, list bound domains, check domain availability...33.0Backupify Domains APISaaS domain and customer account management32.3Nuclei domains APIThe domains API from Nuclei — 2 operation(s) for domains.32.0Logto Domains APICustom domain lets you present a consistent brand by having your own domain name on the sign-in and registr...31.4Openprovider APIThe Openprovider Reseller API provides programmatic access to domain registration and management, DNS, SSL ...31.4Gandi Domains APIManage domains.30.6FAO FAOSTAT Domains APIOperations for browsing available FAOSTAT domains and groups29.9Convert Domains APIDomains define websites which will be used in experiences in your projects.29.7linode Domains APIManage DNS domains and their associated resource records including A, AAAA, CNAME, MX, TXT, SRV, CAA, and N...29.6QuantCDN Domains APIDomain and DNS management29.2Scalable Platforms Domains APIThe Domains API from Scalable Platforms — 2 operation(s) for domains.29.1Architecture Pattern Domains APIThe Domains API from Architecture Pattern — 1 operation(s) for domains.29.0HostBill Domains APIThe Domains API from HostBill — 1 operation(s) for domains.28.9Web.com International Platform APIThe partner-facing API for Web.com's International ("NTS") platform, fronted by Azure API Management. Ten d...28.71inch Domains APIReverse and forward resolution for Web3 naming systems (ENS, Unstoppable Domains, and other supported regis...28.2GoDaddy Domains APIThe Domains API from GoDaddy — 24 operation(s) for domains.28.2Primitive Domains APIClaim, verify, and manage email domains28.0OneTrust Domains APIThe Domains API from OneTrust — 2 operation(s) for domains.26.5
Emerging 10 Early or largely undocumented
Minimal 1 Almost no public developer surface

Score breakdown

Frequency
68.9
log-scaled weighted occurrences
Breadth
3.4
spread across providers
Quality lift
51.8
mean composite of providers using it
Cohesion
7.3
strength of nearest seed neighbor

Related tags

DNS 25 co-occurrences Hosting 13 co-occurrences Email 23 co-occurrences Web Hosting 8 co-occurrences Secrets 12 co-occurrences Transactional Email 8 co-occurrences SMTP 7 co-occurrences Platform-as-a-Service 8 co-occurrences

Where this tag comes from

Api tag114
Provider tag26
Openapi tag85
Openapi op tag470

Cohort brief

Auto-generated

The 125 providers in the APIs.io catalog tagged Domains, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
125
all scored
Mean Kin Score
42.8
+22.1 vs catalog 20.7
Mean Agent Readiness
27.7
+18.0 vs catalog 9.7
Spread
5–87.3
median 41.5 · σ 16.4
How the 125 split by band
Exemplar 9Strong 22Developing 42Thin 36Emerging 13Minimal 3
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 51.3 17.5 +33.8 125
Developer Ergonomics 42.7 17.9 +24.8 125
Access Clarity 40.6 22.3 +18.3 125
Operational Transparency 29.1 11.3 +17.8 125
Discoverability 72.6 60.4 +12.2 125
Contract Governance 16.2 6.4 +9.8 125

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 46% 16% +30
MCP server (first-party) 20% 7% +13
Agent Skills 0% 0% 0
OAuth scopes 18% 9% +9
Security 97% 88% +9
Arazzo workflows 10% 2% +8
Governance rules 40% 13% +27

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Brevo 87.3
  2. 2 Stripe 83.2
  3. 3 Mailchimp 81.5
  4. 4 Didomi 77.1
  5. 5 Squarespace 75.8
  6. 6 SMTP2GO 73.6
  7. 7 Pirsch 68.7
  8. 8 Unbounce 68.7
  9. 9 Novu 66.6
  10. 10 MailerSend 64.6
Top by Agent Readiness
  1. 1 Primitive 75.2
  2. 2 Sylvia API 66.9
  3. 3 Automattic 62.3
  4. 4 Unbounce 59.6
  5. 5 Extole 57.2
  6. 6 HeyMilo 52.3
  7. 7 MailerSend 50.2
  8. 8 Lilt 49.8
  9. 9 Brevo 49.6
  10. 10 Stripe 47.8
All 125 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • 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.
All 92 tools

Call it yourself

curl for this page
This tag
curl "https://apis.io/api/v1/tags/domains"
All tags
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort
curl "https://apis.io/api/v1/cohorts/tag/domains"
The distribution (Pro)
curl "https://apis.io/api/v1/cohorts/tag/domains/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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