How do I install temper?

On macOS and Linux, run: brew install jongjinchoi/temper-domains/temper. On any platform with Node.js 18 or newer, run: npm i -g temper-domains.

What operating systems does temper support?

temper runs on macOS, Linux, and Windows through release binaries or npm. Homebrew installation supports macOS and Linux.

Yes. temper is open-source software released under the Apache 2.0 license.

How many TLDs does temper check?

30 TLDs by default. Use --extended for 59, --tlds for a custom comma-separated list, or --tld-preset for curated sets (tech, popular, startup, cheap).

What is MCP and how does temper use it?

MCP (Model Context Protocol) lets AI assistants like Codex, Claude, and Cursor call external tools. Running 'temper mcp' starts a local stdio server exposing six tools: search_domain, search_names, suggest_domain, check_domain_availability, whois_domain, and open_registrar.

NEW · v0.3.3MADE IN GANGHWA / KOREAAPACHE 2.0

v0.3.330 TLDsApache 2.0

Never open a browser
to find a domain.
Just type & go.

temper is a terminal-first domain search CLI — 30 TLDs by default with a 5s timeout and no telemetry in the CLI/MCP flow. Also an MCP server, so Codex, Claude, and Cursor can search on your behalf.

> temper search gethalden resolving 7 TLDs... gethalden.com … resolving gethalden.io … resolving gethalden.dev … resolving gethalden.app … resolving gethalden.ai … resolving gethalden.co … resolving gethalden.sh … resolving

Seven facts about temper.

Opinionated defaults. No configuration required.

№ 01 / PRIVACY

Private by default.

CLI and MCP queries run on your machine. No tracking, no telemetry. The hosted demo uses a server-side API route for live checks.

№ 02 / SPEED

Fast.

Checks 30 TLDs by default with a 5s timeout. 59 with --extended.

№ 03 / AI

MCP native.

Codex, Claude Code, Claude Desktop, Cursor — query temper directly.

№ 04 / INPUT

Keyboard-first.

Vim nav. Single-key registrar select. Hit enter to buy.

№ 05 / OUTPUT

Pipe-friendly.

--format json pipes into jq, grep, any shell script.

№ 06 / STYLE

Themeable.

7 built-in themes — 5 dark, 2 light. Or write your own.

№ 07 / LICENSE

Open source.

Apache 2.0. Zero telemetry. Read every line before you run it.

∞ / INSTALL

One command.

brew install jongjinchoi/temper-domains/temper

Let Codex do the typing.

// temper speaks MCP over stdio — codex · claude · cursor · windsurf · cline

AI-native, local-only.

temper runs as a local MCP server. Your AI assistant searches domains, checks availability, and opens purchase pages — without you switching context once.

When invoked through your local MCP server, temper does not proxy requests through a temper-hosted service.

search_domainsearch_namessuggest_domaincheck_domain_availabilitywhois_domainopen_registrar

# Codex CLI / IDE extension
$ codex mcp add temper -- temper mcp

# or ~/.codex/config.toml
[mcp_servers.temper]
command = "temper"
args = ["mcp"]

# in the Codex TUI
$ /mcp

The reference card.

Everything temper does, on one page. Tear it out.

CMD / 01

temper search <name>

Check 30 TLDs (59 with --extended). Navigate with j/k. Enter to buy.

$ temper search gethalden --tlds com,dev,io

CMD / 02

temper suggest <name>

Generate prefix/suffix combinations. get·, try·, ·app, ·hq.

$ temper suggest gethalden -p use,try -s app,hq

CMD / 03

temper whois <domain>

Registrar, expiry, nameservers, DNSSEC, EPP. RDAP-first.

$ temper whois example.com --format json

CMD / 04

temper watch <domain>

Track availability. temper list shows the watchlist.

$ temper watch gethalden.com

CMD / 05

temper history

Interactive search history. Re-run or remove previous searches.

$ temper history

CMD / 06

temper mcp

Start the MCP server over stdio. For Codex/Claude/Cursor configs.

$ temper mcp

KEYS →jk move↵ buyi whois/ filtera watchs suggesth historyw listesc backq quit