abr.business.acn_lookup
Resolve an Australian Company Number (ACN) or ASIC-registered number to full entity details via the Australian Business Register (ABR). Returns the linked ABN, entity name, company type, ABN status, GST registration, registered address, and all associated business names. ACN is a 9-digit number i...
This record as markdown: /tools/io-github-whiteknightonhorse-apibase/abr.business.acn-lookup.md
What abr.business.acn_lookup does on Apibase
AI agents call abr.business.acn_lookup to retrieve information from Apibase without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
acn | string | Yes | Australian Company Number (ACN) — 9-digit numeric identifier issued by ASIC, spaces optional (e.g. "051 775 556" or "051775556") |
Parameters from the server's own tool schema.
Why abr.business.acn_lookup is rated Low
Tool queries public business registry data without modification or side effects.
From the tool's definition Resolve, lookup, returns entity details, verify against register
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs abr.business.acn_lookup safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Apibase, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For abr.business.acn_lookup, this is the rule to start with:
abr.business.acn_lookup is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Apibase, apply this rule, and every abr.business.acn_lookup call is checked against it from then on.
Questions about abr.business.acn_lookup
Resolve an Australian Company Number (ACN) or ASIC-registered number to full entity details via the Australian Business Register (ABR). Returns the linked ABN, entity name, company type, ABN status, GST registration, registered address, and all associated business names. ACN is a 9-digit number issued by ASIC to every registered Australian company. Use this when you have an ACN from an invoice, contract, or company extract and need to verify the entity against the national register. Source: ABR, free registration, commercial use permitted. It is categorised as a Read tool in the Apibase MCP Server, which means it retrieves data without modifying state.
abr.business.acn_lookup accepts 1 parameter: acn. Required: acn. The full parameter table on this page comes from the server's own tool schema.
Register the Apibase MCP server in PolicyLayer and add a rule for abr.business.acn_lookup: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Apibase. Nothing to install.
abr.business.acn_lookup is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the abr.business.acn_lookup rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for abr.business.acn_lookup. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
abr.business.acn_lookup is provided by the Apibase MCP server (apibase-mcp-client). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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