StableDomains vs Conway Domains
Both let AI agents register real domains and pay in USDC over x402. Here is how they differ, from each company's public pages. Checked 29 October 2026. Products and prices change, so check the sources before relying on a detail.
| StableDomains | Conway Domains | |
|---|---|---|
| Payment tokens | USDC and USDT | USDC |
| Chains | Base, Ethereum, Arbitrum, Polygon, HyperEVM, BNB Chain, Solana (gasless x402 = USDC on Base) | Base, Solana |
| x402 registration | POST /api/v1/register, no account or API key | POST api.conway.domains/domains/register with Bearer auth (SIWE/SIWS wallet sign-in) |
| MCP | Remote MCP at /api/mcp, 37 tools (v2.4.0), MCP Registry: net.stabledomains/registrar | Domain tools via the Conway Terminal (MCP) |
| TLDs | .ai .app .co .com .dev .io .net .org .xyz | com, io, ai, xyz, net, org, dev (per docs) |
| DNS management | Yes (set_dns / dashboard) | Yes, full record CRUD |
| WHOIS privacy | Free where the registry allows | On by default |
| Extras | Drop Radar expiring-domain data, prepaid balance as a spending cap, webhooks, card via Coinbase Onramp | – |
| .com price | $16.99 registration / $20.99 renewal | $13.82 registration / $13.82 renewal (live pricing API) |
When to pick which
- Conway if you are already on Base or Solana USDC and want lower listed .com pricing.
- StableDomains if you hold USDT, or USDC on Ethereum, Arbitrum, Polygon, HyperEVM or BNB Chain, want one-request x402 registration without signing in, or need expiring-domain data.
Search and buy a domain in USDC or USDT →
Sources (accessed 29 October 2026):
- Conway domains docs
- Conway registration docs
- Conway live pricing API
- StableDomains pricing
- StableDomains agents guide
See all comparisons at /compare.