StableDomains vs Porkbun MCP: which domain MCP server fits your agent?
Porkbun's official MCP server is a good fit if you already keep domains, DNS and hosting at Porkbun and want account credit, USDC on Base or Stripe Link with a full sandbox. StableDomains suits agents that want to pay in USDC or USDT on 7 chains, use x402 without an account, and hand a person a price-locked checkout link before paying.
At a glance
| StableDomains | Porkbun MCP | |
|---|---|---|
| Endpoint | stabledomains.net/api/mcp (streamable HTTP, v2.5.0) | mcp.porkbun.com/mcp; local npx @porkbunllc/mcp-server |
| Variants | Full server, plus /api/mcp/discover with no purchase tools | Full, /mcp/no-purchases and /mcp/no-topups |
| Crypto payment | USDC or USDT on 7 chains (Base, Ethereum, Arbitrum, Polygon, HyperEVM, BNB Chain, Solana), by x402 or on-chain transfer | USDC on Base via x402, per purchase or as account credit |
| Card | A person pays the checkout link by card (Stripe, card fee added) or approves a Stripe Link (MPP) request | Account credit from a saved card; Stripe Link wallet via MPP |
| Account | Not needed for search, quotes or paying an order; agent_signup gives an API key with no form; OAuth 2.1 for connectors | Porkbun account (OAuth) or API key pair for live actions |
| Sandbox | No separate sandbox; dry_run on orders, renewals and DNS, free price-locked orders, idempotency keys | Yes: sandbox keys with fake credit |
| Spend controls | Scoped API keys (read scope, no-purchase, per-domain), monthly spend cap, dry_run, human approval in agent policy | Monthly spend limit, top-up caps, no-purchase and no-topup endpoints, x402 max cents |
| .com year 1 / renewal | $16.99 / $20.99 | $11.81 / $11.81 |
| .ai | $169.99/yr, 2-year minimum, renews at $169.99 | $82.70/yr registration and renewal |
| .xyz year 1 / renewal | $4.99 / $30.99 | $2.04 / $14.21 |
| WHOIS privacy | Free | See porkbun.com |
| Hosting, email, SSL | Not offered | Offered |
| Extras | Drop Radar, drop alerts, valuation, aftermarket links, affiliate payouts in USDC | Aftermarket search, closeouts, DNSSEC, glue records, webhooks |
Prices are list prices checked 4 Nov 2026 (Porkbun from its public pricing API) and change over time. See our domain prices report.
Payments: rails and who signs
StableDomains takes USDC or USDT on 7 chains, by x402 or a plain transfer, and a person can pay the order link with a wallet, QR code or card. Porkbun takes USDC on Base over x402, account credit, or a Stripe Link wallet. Neither lets an agent pay by card unattended: a person approves.
Testing and safety controls
Porkbun leads on testing with a full sandbox and separate no-purchase and no-topup endpoints. StableDomains offers scoped API keys with monthly spend caps, dry_run previews, price-locked quotes, idempotency keys and a no-purchase discovery server at /api/mcp/discover. Details: how purchases are kept safe and how AI agents buy domains safely.
Where each one wins
Porkbun: lower list prices on .com, .ai and .xyz; a sandbox; hosting, email and SSL; listings in the ChatGPT and Claude directories.
StableDomains: USDC or USDT on 7 chains; x402 registration without an account; a price-locked checkout link for a person; Drop Radar and alerts; affiliate payouts in USDC.
How to connect
claude mcp add --transport http stabledomains https://stabledomains.net/api/mcp # Porkbun: see https://porkbun.com/mcp
FAQ
Does Porkbun have an official MCP server?
Yes. Porkbun hosts one at mcp.porkbun.com/mcp and publishes @porkbunllc/mcp-server on npm.
What's a Porkbun MCP alternative for paying in stablecoins?
StableDomains takes USDC or USDT on 7 chains via x402 or on-chain transfer, through its MCP server at stabledomains.net/api/mcp.
Which domain MCP server has a sandbox?
Porkbun has a sandbox with fake credit. StableDomains has no separate sandbox, but dry_run previews orders without charging and creating an order costs nothing until it is paid.
Is Porkbun or StableDomains cheaper for a .com?
At 4 Nov 2026 list prices Porkbun was $11.81 for year 1 and renewal; StableDomains was $16.99 for year 1 and $20.99 to renew.
Can an AI agent buy a domain without an account?
On StableDomains, yes: an x402 POST to /api/v1/register quotes the USDC price and registers on payment. Porkbun's live tools need a Porkbun account or API key.
Can my agent pay by card on its own?
No. On both, a person approves card payments, through Stripe Link or a checkout page.