Domain Name Registration For Agents

Register and manage ICANN domains for AI agents. Wallet authentication (SIWE/SIWS), USDC payments on Base or Solana, full DNS management.

AgentNS - Domain Registration for AI Agents

Use this skill when you need to register domains, check domain availability, or manage DNS records for an agent or project.

Installation

pip install agentns-client

# For Solana wallet support:
pip install agentns-client[solana]

Complete Workflow

from agentns_client import AgentNSClient, load_or_create_wallet

# 1. Create client with wallet (auto-creates wallet.json if needed)
account = load_or_create_wallet()
client = AgentNSClient(account=account)

# 2. Check domain availability (no auth required)
result = client.check_domain("myagent.xyz")
if not result.available:
    print(f"{result.domain} is not available")
    # Search across 20 TLDs to find alternatives
    results = client.search_domains("myagent")
    available = [r for r in results if r.available]
    for r in available:
        print(f"{r.domain}: ${r.price_usdc} USDC")

# 3. Authenticate with wallet signature
client.login()

# 4. Create registrant profile (one-time, ICANN requirement)
client.ensure_registrant({
    "name": "Agent Smith",
    "street_address": "123 AI Street",
    "city": "San Francisco",
    "state_province": "CA",
    "postal_code": "94102",
    "country_code": "US",
    "email": "[e-mail]",
    "phone": "[phone]",
})

# 5. Register domain (payment handled automatically)
domain = client.register_domain("myagent.xyz")
print(f"Registered: {domain.domain}")
print(f"Expires: {domain.expires_at}")

# 6. Add DNS records
client.add_dns("myagent.xyz", type="A", host="@", value="192.0.2.1")
client.add_dns("myagent.xyz", type="CNAME", host="www", value="myagent.xyz")
client.add_dns("myagent.xyz", type="TXT", host="@", value="v=spf1 -all")

Wallet Setup

EVM (Base network - default):

from agentns_client import load_or_create_wallet
account = load_or_create_wallet("wallet.json")  # Creates if missing
print(f"Address: {account.address}")
# Fund with USDC on Base network before registering

Solana:

from agentns_client import load_or_create_solana_wallet
keypair = load_or_create_solana_wallet("solana_wallet.json")
print(f"Address: {keypair.pubkey()}")
# Fund with USDC on Solana before registering

Client Methods

Domain Operations

# Check single domain (no auth)
result = client.check_domain("example.com")
# Returns: DomainCheck(domain, available, price_usdc)

# Search across 20 TLDs (no auth)
results = client.search_domains("mycompany")
# Searches: com, io, net, co, ai, xyz, dev, app, org, tech,
#           club, online, site, info, me, biz, us, cc, tv, gg

# Register domain (requires auth + USDC balance)
domain = client.register_domain("example.xyz", years=1)
# Returns: DomainInfo(domain, owner_address, status, registered_at, expires_at)

# List owned domains
domains = client.list_domains()

DNS Management

# List DNS records
records = client.list_dns("example.xyz")

# Add record
record = client.add_dns(
    domain="example.xyz",
    type="A",           # A, AAAA, CNAME, MX, TXT, SRV, CAA
    host="@",           # @ for root, or subdomain name
    value="192.0.2.1",
    ttl=3600,           # 300-86400 seconds
    distance=10         # Required for MX/SRV only
)

# Update record
client.update_dns("example.xyz", record_id="12345", value="192.0.2.2")

# Delete record
client.delete_dns("example.xyz", record_id="12345")

Nameservers

# Get current nameservers
ns = client.get_nameservers("example.xyz")
# Default: ["ns1.namesilo.com", "ns2.namesilo.com"]

# Change to custom nameservers (e.g., Cloudflare)
client.set_nameservers("example.xyz", [
    "ns1.cloudflare.com",
    "ns2.cloudflare.com"
])

Registrant Profile

# Get profile
profile = client.get_registrant()

# Create profile (required before first domain registration)
profile = client.create_registrant({
    "name": "Required Name",
    "street_address": "123 Main St",
    "city": "San Francisco",
    "state_province": "CA",
    "postal_code": "94102",
    "country_code": "US",        # ISO 3166-1 alpha-2
    "email": "[e-mail]",
    "phone": "[phone]",
    "organization": "Optional Org",  # Optional
    "whois_privacy": True            # Optional, default True
})

# Update profile
client.update_registrant({"email": "[e-mail]"})

# Get or create (recommended)
profile = client.ensure_registrant({...})

Error Handling

from agentns_client.exceptions import (
    AgentNSError,           # Base exception
    AuthenticationError,    # Invalid/expired JWT (401)
    PaymentRequiredError,   # Insufficient USDC balance (402)
    NotFoundError,          # Domain/record not found (404)
    ConflictError,          # Profile exists, domain taken (409)
    ValidationError,        # Invalid input (400)
    RateLimitError,         # Too many requests (429)
)

try:
    domain = client.register_domain("example.xyz")
except PaymentRequiredError as e:
    print(f"Need {e.payment_requirement.amount} USDC")
    print(f"Send to: {client.wallet_address}")
except ConflictError:
    print("Domain already registered or unavailable")
except AuthenticationError:
    client.login()  # Re-authenticate

Important Notes

• USDC required: Fund your wallet with USDC on Base (EVM) or Solana before registering
• Registrant profile: ICANN requires contact info - create once, reused for all domains
• WHOIS privacy: Free on all domains, enabled by default
• 400+ TLDs: Check any TLD with check_domain(), search 20 popular ones with search_domains()
• Pricing: Domain cost + 20% markup (minimum $4), paid in USDC

Resources

• PyPI: https://pypi.org/project/agentns-client/
• GitHub: https://github.com/vibrant/agentns_client
• API Docs: https://agentns.xyz/docs
• Support: @AgentNSxyz