Find Available Domain Names
Search for available domain names that match your brand, project, or business idea.
Domain Search
Find available domain names fast
Generate domain name ideas from a keyword and instantly check availability across TLDs. Ranked candidates with real-time registration checks. Also verify a specific list of domains you already have in mind.
Search Domains
Generate and rank domain candidates from a keyword or brand phrase, then check registration status for each candidate across selected TLDs.
Returns: Ranked domain candidates with availability checks, registrar metadata, and reasoning for each generated name
Parameters
query *stringKeyword or brand phrase used to generate domain candidates
tldsarrayOptional list of TLDs to include (e.g. ["com", "io", "ai"])
limitnumberMaximum number of results to return (1-30)
include_takenbooleanInclude registered/taken domains in the returned results
Example
Search 5 available domains for a "human leap" brand
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
-d '{
"tool": "domain-search",
"skill": "search_domains",
"input": {
"query": "human leap",
"tlds": [
"com",
"io",
"ai"
],
"limit": 5
}
}' \
https://api.toolrouter.com/v1/tools/callCheck Domains
Check explicit domain names and return structured registration intelligence including source, status, registrar, and availability.
Returns: Structured registration status for each provided domain, including availability, registrar metadata, and lookup source diagnostics
Parameters
domains *arrayDomain names to check (up to 100, e.g. ["example.com", "example.io"])
maxnumberMaximum number of domains from the list to check (1-100)
include_rawbooleanInclude raw RDAP/WHOIS payloads in each result
Example
Check two specific domains for registration status
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
-d '{
"tool": "domain-search",
"skill": "check_domains",
"input": {
"domains": [
"google.com",
"this-domain-probably-does-not-exist-12345.com"
],
"max": 2
}
}' \
https://api.toolrouter.com/v1/tools/callQuick Start
MCP (Claude Code)
claude mcp add --transport stdio \
--env TOOLROUTER_API_KEY=YOUR_API_KEY \
toolrouter -- npx -y toolrouter-mcpREST API
curl -H "Authorization: Bearer $TOOLROUTER_API_KEY" \
-d '{"tool":"domain-search","skill":"search_domains","input":{}}' \
https://api.toolrouter.com/v1/tools/callUse Cases
Search Domain Name Variations
Explore variations of a domain name including hyphens, abbreviations, and alternative TLDs.
Search Papers by Topic
Find relevant academic papers on any research topic across millions of scholarly publications.
Research Competitor Ad Creatives
Research what ads your competitors are running across Facebook and Google to understand their messaging and creative strategy.
Workflows
Domain Acquisition Research
Research domain acquisition opportunities by searching availability, checking ownership, examining DNS, and reviewing domain history.
Frequently Asked Questions
Does it generate ideas or just check names I already have?
It does both. You can generate domain ideas from a keyword and also verify a shortlist you already have.
Can I compare different TLDs?
Yes. Availability checks run across TLDs so you can compare options side by side.
Is the output ranked or just a raw list?
The tool returns ranked candidates together with real-time registration checks, so the best-looking names rise to the top.
Is it useful for brandable launches?
Yes. It is a fast way to move from a keyword to available domain ideas when you are naming a new product or project.