Search Australian businesses and look up ABN and GST records from the Australian Business Register.
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Look up detailed information for a specific Australian Business Number (ABN).
11-digit ABN to look up
Include historical records
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
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claude mcp add --transport http abn-gst https://mcp.abn.expert/mcp
Look up detailed information for a specific Australian Business Number (ABN).
| Argument | Type | Description |
|---|---|---|
| abn |
| string |
| 11-digit ABN to look up |
| includeHistorical | boolean | Include historical records |
{
"type": "object",
"title": "abn_lookupArguments",
"required": [
"abn"
],
"properties": {
"abn": {
"type": "string",
"title": "Abn",
"description": "11-digit ABN to look up"
},
"includeHistorical": {
"type": "boolean",
"title": "Includehistorical",
"default": false,
"description": "Include historical records"
}
}
}Search for Australian Business Numbers (ABN) by business name.
| Argument | Type | Description |
|---|---|---|
| q* | string | Search query string (business name) |
| limit | any | Result limit (1-50) |
| state | any | State filter (e.g., NSW, VIC, QLD) |
| includeHistorical | boolean | Include historical records |
{
"type": "object",
"title": "abn_search_by_nameArguments",
"required": [
"q"
],
"properties": {
"q": {
"type": "string",
"title": "Q",
"description": "Search query string (business name)"
},
"limit": {
"anyOf": [
{
"type": "integer",
"maximum": 50,
"minimum": 1
},
{
"type": "null"
}
],
"title": "Limit",
"default": null,
"description": "Result limit (1-50)"
},
"state": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "State",
"default": null,
"description": "State filter (e.g., NSW, VIC, QLD)"
},
"includeHistorical": {
"type": "boolean",
"title": "Includehistorical",
"default": false,
"description": "Include historical records"
}
}
}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 2, 2026.
No readOnlyHint / destructiveHint annotations, so clients can't tell a read from a write without asking.
Fix: Add annotations to each tool, e.g. { readOnlyHint: true } for tools that only read.