For agents

A registrar your AI can use.

Just speaks the Model Context Protocol. Drop it into Claude, ChatGPT, Cursor, or your own CLI — same 7 tools, same auth, same prices.

Add Just to Claude
One click in Claude Desktop, or paste this MCP server URL.
$ claude mcp add just https://mcp.just.com
→ Authenticate at https://just.com/auth/abc123
✓ Connected. 7 tools available.
Available: domain.search · domain.buy · domain.list · domain.transfer · dns.set · dns.get · domain.cancel
The 7 tools

What your agent can do (and not do).

domain.searchread
Check 23 endings for a name. Returns price + availability.
domain.buywrite
Register a domain. Requires confirmation if over budget.
domain.listread
List domains the agent has access to.
dns.get / dns.setwrite
Read & write DNS records. Reversible from the dashboard.
domain.transferwrite
Move a domain in or out. Outbound is always free.
domain.cancelwrite
Cancel renewal. 5-day grace period to undo.
Whoamiread
See what the agent can and can't do under its key.
Permissions you set

You decide what the agent can spend, on what, for how long.

Budget cap
Per-month dollar cap across all purchases. Default $50.
TLD allowlist
Limit to e.g. .com / .io / .dev. Anything else needs your OK.
Manual confirmation
Require your tap to confirm any buy over $X. Default $30.
Read-only mode
Search & list only. Useful when first introducing the connector.
Expiry
Key auto-revokes after 30 days unless renewed. Always.
Audit log
Every action ends up in your dashboard log, with one-click undo where safe.

The fastest registrar your agent has ever met.

Get an API key →Read the docs