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Search for Available Domains
Search for Available Domains is a paid API for AI agents from domains.rapidruntime.com, paid per call via MPP, price unknown, not verified (last probed 2026-10-09); live alternatives: Stable Domains Availability Checker ($0.05) and NetIntel Bulk Domain Availability Check ($0.1).
Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5. Live alternatives for the same use case: Stable Domains Availability Checker ($0.05) · NetIntel Bulk Domain Availability Check ($0.1).
Searches for available domain names across multiple TLDs based on a keyword, returning availability, pricing, and purchase type for each result.
Price / call—
Success—
StatusUnknown
How this service works
Keyword-based domain search across TLDs. Returns availability, pricing, and purchase type for each result.
Output
Returns an array of domain results, each including the full domain name, SLD, TLD, whether it is available and purchasable, the purchase price, renewal price, purchase type (e.g. standard or premium), and a reason if unavailable.
Example use cases
Finding domain options for new startup
“I'm launching a SaaS startup and want to find available domains for the name 'velocify' across common business extensions like .com, .io, and .co – can you show me what's out there and how much each one costs?”
Researching brand name alternatives
“I'm trying to build a brand around eco-friendly products and like the word 'verdant' – can you search for available domains with that keyword across all major TLDs and tell me which ones are affordable?”
Scouting premium domain opportunities
“Our agency wants to grab a premium domain for a tech client – can you search for available domains using 'nexus' and filter for premium options that might have higher perceived value?”
Technical details
Endpoint
POSThttps://domains.rapidruntime.com/api/v1/domains/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to discover available domain names matching a keyword concept across multiple TLDs simultaneously, especially when you don't have a specific domain in mind yet. Prefer this over the 'Check domain availability' endpoint when doing exploratory brand/name research rather than checking a specific known domain.
Side effects
- Missing required 'keyword' field returns a 400 validation error
- Timeout value below 500ms or above 12000ms fails validation
- tldFilter with more than 50 items is rejected
- Search timeout exceeded returns partial or empty results
- Keyword with invalid characters may return empty results
- Network or upstream registry errors may return 500 responses
Input
{
"keyword": "artificial intelligence",
"timeout": 5000,
"tldFilter": [
"com",
"io",
"net"
]
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| keywordrequired | string | Search keyword (e.g. 'mybusiness') |
| timeout | number | Search timeout in milliseconds (default 12000) |
| tldFilter | array | Limit results to these TLDs (e.g. ['com', 'io']) |
Output
{
"results": [
{
"sld": "artificialintelligence",
"tld": "com",
"domainName": "artificialintelligence.com",
"purchasable": false
},
{
"sld": "artificialintelligence",
"tld": "net",
"domainName": "artificialintelligence.net",
"purchasable": false
},
{
"sld": "myartificialintelligence",
"tld": "io",
"premium": false,
"domainName": "myartificialintelligence.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
},
{
"sld": "artificial-intelligences",
"tld": "io",
"premium": false,
"domainName": "artificial-intelligences.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
},
{
"sld": "artificialintelligencegroup",
"tld": "io",
"premium": false,
"domainName": "artificialintelligencegroup.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
},
{
"sld": "bestartificialintelligence",
"tld": "io",
"premium": false,
"domainName": "bestartificialintelligence.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
},
{
"sld": "my-artificial-intelligence",
"tld": "io",
"premium": false,
"domainName": "my-artificial-intelligence.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
},
{
"sld": "myartificialintelligences",
"tld": "io",
"premium": false,
"domainName": "myartificialintelligences.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
},
{
"sld": "artificialintelligencesinc",
"tld": "io",
"premium": false,
"domainName": "artificialintelligencesinc.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
},
{
"sld": "artificialreport",
"tld": "io",
"premium": false,
"domainName": "artificialreport.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
},
{
"sld": "justartificialintelligence",
"tld": "io",
"premium": false,
"domainName": "justartificialintelligence.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
},
{
"sld": "allartificialintelligence",
"tld": "io",
"premium": false,
"domainName": "allartificialintelligence.io",
"purchasable": true,
"purchaseType": "registration",
"renewalPrice": 79.99,
"purchasePrice": 53.99
}
]
}Schema · Response
| Field | Type | Description |
|---|---|---|
| resultsrequired | array |
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