name: Unstoppable Domains
description: Web3 domain name service providing REST APIs for resolving crypto domain names, managing NFT domains, reverse lookups, cross-chain address resolution, domain registration, and DNS management across 150+ TLDs on multiple blockchains.
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/unstoppable-domains/refs/heads/main/apis.yml
created: '2026-06-14'
modified: '2026-06-14'
specificationVersion: '0.19'
aid: unstoppable-domains
type: Index
tags:
  - Web3
  - Blockchain
  - Domain Names
  - NFT Domains
  - Crypto
  - Resolution
  - DNS
  - Decentralized
  - Ethereum
  - Polygon
apis:
  - name: Unstoppable Domains Resolution API
    description: HTTP-based REST API for resolving Web3 domain names to cryptocurrency addresses and records. Supports 310+ cryptocurrencies, reverse lookups, batch queries, TLD enumeration, and RPC proxy for Ethereum and Polygon. Covers UNS, CNS, and ENS naming services with TLDs including .crypto, .x, .nft, .wallet, .polygon, .bitcoin, .dao, .888, .blockchain, .zil, and .eth.
    image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    humanURL: https://docs.unstoppabledomains.com/resolution/overview
    baseURL: https://api.unstoppabledomains.com/resolve
    tags:
      - Resolution
      - Domain
      - Crypto Addresses
      - Reverse Lookup
      - Web3
      - ENS
    properties:
      - type: Documentation
        url: https://docs.unstoppabledomains.com/resolution/overview
      - type: APIReference
        url: https://docs.unstoppabledomains.com/web3/apis/resolution/openapi
      - type: OpenAPI
        url: openapi/unstoppable-domains-resolution-api-openapi.yaml
  - name: Unstoppable Domains Partner API
    description: RESTful Partner API v3 for Web3 domain distribution and management. Enables searching, registering, and managing domains in custody wallets and self-custody wallets on Polygon and Base blockchains. Covers domain lifecycle operations, custody wallet creation, pending operation tracking, webhooks, and domain suggestions. Usage-based billing with periodic invoicing.
    image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    humanURL: https://docs.unstoppabledomains.com/domain-distribution-and-management/overview
    baseURL: https://api.unstoppabledomains.com/partner/v3
    tags:
      - Partner
      - Domain Registration
      - Custody Wallet
      - Web3
      - NFT Domains
      - Blockchain
    properties:
      - type: Documentation
        url: https://docs.unstoppabledomains.com/domain-distribution-and-management/overview
      - type: APIReference
        url: https://docs.unstoppabledomains.com/apis/partner/openapi
      - type: OpenAPI
        url: openapi/unstoppable-domains-partner-api-openapi.yaml
  - name: Unstoppable Domains Reseller API
    description: RESTful API for resellers offering traditional DNS domain registration and management alongside Web3 domains. Supports domain search with pricing and availability, registration workflows, DNS record management, and lifecycle operations through a single unified interface.
    image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    humanURL: https://docs.unstoppabledomains.com/apis/reseller/quick-start
    baseURL: https://api.unstoppabledomains.com/partner/v3
    tags:
      - Reseller
      - DNS
      - Domain Registration
      - Traditional Domains
      - White-label
    properties:
      - type: Documentation
        url: https://docs.unstoppabledomains.com/apis/reseller/quick-start
      - type: APIReference
        url: https://docs.unstoppabledomains.com/apis/reseller/openapi.yaml
      - type: OpenAPI
        url: openapi/unstoppable-domains-reseller-api-openapi.yaml
  - name: Unstoppable Domains User API
    description: MCP-compatible REST API for programmatic user account operations including domain search and purchase, portfolio management, DNS record configuration (A, AAAA, CNAME, MX, TXT, NS, SRV, CAA), marketplace listing creation and management, cart and checkout workflows, offer handling, and real-time webhook notifications for domain events.
    image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    humanURL: https://docs.unstoppabledomains.com/user-api/overview
    baseURL: https://api.unstoppabledomains.com
    tags:
      - User API
      - Portfolio
      - DNS Management
      - Marketplace
      - Cart
      - Webhooks
    properties:
      - type: Documentation
        url: https://docs.unstoppabledomains.com/user-api/overview
      - type: APIReference
        url: https://docs.unstoppabledomains.com/apis/user-api/openapi
      - type: OpenAPI
        url: openapi/unstoppable-domains-user-api-openapi.json
common:
  - type: Website
    url: https://unstoppabledomains.com
  - type: Documentation
    url: https://docs.unstoppabledomains.com
  - type: APIReference
    url: https://docs.unstoppabledomains.com/apis/overview
  - type: GitHubOrg
    url: https://github.com/unstoppabledomains
  - type: Sandbox
    url: https://api.ud-sandbox.com
  - type: Authentication
    url: https://docs.unstoppabledomains.com/domain-distribution-and-management/quickstart/retrieve-an-api-key
  - type: Pricing
    url: https://support.unstoppabledomains.com/support/solutions/articles/48001184253-pricing-tiers-for-regular-domains
  - type: Blog
    url: https://unstoppabledomains.com/blog
  - type: Developers
    url: https://unstoppabledomains.com/developers
  - type: Plans
    url: plans/unstoppable-domains-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/unstoppable-domains-rate-limits.yml
  - type: FinOps
    url: finops/unstoppable-domains-finops.yml
  - type: X
    url: https://x.com/unstoppableweb
  - type: LinkedIn
    url: https://www.linkedin.com/company/unstoppable-domains
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com