Registering a domain from an agent is the easy part; several APIs do it. What breaks is everything after the purchase — and it breaks quietly, because the usual status fields keep saying "active" while the domain is dark.

Registration your agent can drive. Search availability and price across 500+ TLDs, then buy — with a quote first and a hard --confirm gate on the money.
A health check with four layers. domain check walks registry delegation (over DoH, not the registrar's own claim), the DNS zone, the hosting binding, and the served content — because "the NS record looks right" is not the same as "the delegation still exists".
Alerts that assign blame correctly. Scheduled checks only page you about domains that actually carry something of yours; failures back off from hourly to daily rather than mailing you the same thing for fifty days.
The rest of the stack, same account. DNS records, mail routing, HTTPS and deploys all point at the same domains without a second integration.

Install

npm i -g @clize/clize

@clize/domains ships no code of its own — it is the Agent Domains entry point on npm and in the MCP registry (ai.clize/domains), and it depends on @clize/clize: one CLI, one MCP server, one account behind every Clize product line. Installing it gets you the whole CLI, not a domains-only fork.

Note that npm does not put a dependency's executable on your PATH when you globally install a metapackage, so install @clize/clize directly for the clize command. Use @clize/domains for the MCP server below.

MCP: just the domain tools

claude mcp add domains -- npx -y -p @clize/domains clize-mcp --profile domains

--profile domains exposes only this line's tools — clize_domain_search, clize_domain_buy, clize_domain_ns, clize_dns_list, clize_dns_set, clize_dns_rm — plus account status / balance / recharge. domain check and the alerting cron are CLI/platform side today. Drop --profile for the full Clize tool set.

The loop

clize domain search acme acme-audit --tld com     # availability + price, several at once
clize domain buy acme.com                         # quote only
clize domain buy acme.com --confirm               # 💰 actually register

clize domain check acme.com                       # four layers: delegation → zone → binding → content
clize domain ns acme.com                          # who is authoritative right now, and who should be
clize dns set acme.com --type TXT --name @ --content "v=spf1 ..."
clize domain remove acme.com                      # stop tracking it here (does not release the registration)

The same domains carry mail (Agent Inbox) and sites (Sites) with no second setup.