Search 254 premium .ai domains for sale, get free .ai value estimates and real .ai sales data.
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The biggest publicly reported .ai domain sales (price in USD, date, venue, source). Useful to estimate what a .ai domain is worth.
Number of sales (default 20)
Only names up to this length without .ai
Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.
claude mcp add --transport http domains https://4ai.ai/mcp
The biggest publicly reported .ai domain sales (price in USD, date, venue, source). Useful to estimate what a .ai domain is worth.
| Argument | Type | Description |
|---|---|---|
| limit | integer | Number of sales (default 20) |
| max_length | integer | Only names up to this length without .ai |
{
"type": "object",
"properties": {
"limit": {
"type": "integer",
"description": "Number of sales (default 20)"
},
"max_length": {
"type": "integer",
"description": "Only names up to this length without .ai"
}
}
}Free value estimate for any .ai domain name: auction, marketplace and brokerage values with likely ranges, the type of name, a short verdict and notes. Also says if the name is for sale on 4ai, with an offer link. Up to 100 names per call.
| Argument | Type | Description |
|---|---|---|
| domains* | array | Domain names, e.g. ["agent.ai", "888.ai"] |
{
"type": "object",
"required": [
"domains"
],
"properties": {
"domains": {
"type": "array",
"items": {
"type": "string"
},
"description": "Domain names, e.g. [\"agent.ai\", \"888.ai\"]"
}
}
}Details for one domain in the 4ai portfolio (for example "p0.ai"): categories, page, offer link, and comparable public .ai sales. Says so if the domain is not in the portfolio.
| Argument | Type | Description |
|---|---|---|
| domain* | string | Domain name, with or without .ai |
{
"type": "object",
"required": [
"domain"
],
"properties": {
"domain": {
"type": "string",
"description": "Domain name, with or without .ai"
}
}
}Categories of .ai domains in the 4ai portfolio, with what they are good for and how many names each has.
No arguments.
{
"type": "object",
"properties": {}
}Search the 4ai.ai portfolio of premium .ai domain names for sale. Filter by a word in the name, a category (see list_categories), type and maximum length. Every result has an offer link.
| Argument | Type | Description |
|---|---|---|
| type | string | Kind of name |
| limit | integer | Maximum number of results (default 20, max 100) |
| query | string | Word to look for in the domain name or a category word, e.g. "quantum", "casino", "health" |
| category | string | Category key, e.g. short, numeric, quantum, crypto, tech, ai, code, space, health, gaming, commerce, places, brands |
| max_length | integer | Maximum length of the name without .ai |
{
"type": "object",
"properties": {
"type": {
"enum": [
"numeric",
"short",
"one-word",
"two-word"
],
"type": "string",
"description": "Kind of name"
},
"limit": {
"type": "integer",
"description": "Maximum number of results (default 20, max 100)"
},
"query": {
"type": "string",
"description": "Word to look for in the domain name or a category word, e.g. \"quantum\", \"casino\", \"health\""
},
"category": {
"type": "string",
"description": "Category key, e.g. short, numeric, quantum, crypto, tech, ai, code, space, health, gaming, commerce, places, brands"
},
"max_length": {
"type": "integer",
"description": "Maximum length of the name without .ai"
}
}
}We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 1, 2026.