# Australian Business Register

**Canonical:** https://apis.io/providers/australian-business-register/  
**Website:** https://abr.gov.au/  
**APIs profiled:** 3

The Australian Business Register (ABR), administered within the Australian Taxation Office (ATO), holds the publicly available information businesses provide when they register for an Australian Business Number (ABN). It exposes that data through ABN Lookup (abr.business.gov.au), hosted by the Department of Industry, Science and Resources, including free ABN Lookup web services: a SOAP/XML service (ABRXMLSearch, with WSDL) and JSON services for searching by ABN, ACN, name and postcode, available to registered users who accept the Web Services Agreement and obtain a GUID.

## Kin Score — 38.4 / 100 (thin)

Scored 2026-10-31 under rubric 0.25.0. Trend: flat (+0.0 from 38.4).

| Facet | Score |
|---|---|
| Discoverability | 71.4 |
| Contract Quality | 0.0 |
| Contract Governance | 18.2 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 54.8 |
| Access Clarity | 55.3 |

Regulatory layer — **Government & Public Sector**: 30.4 (matched via tags).

## Agent readiness — 27.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | served |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | na |

## APIs (3)

- **ABN Lookup XML Search Web Service (ABRXMLSearch)** — SOAP/XML web service for ABN Lookup that searches the Australian Business Register by ABN, ACN/ASIC number, name, postcode, charity, ABN status and registration/update events. I...
- **ABN Lookup XML Search Web Service, RPC (ABRXMLSearchRPC)** — RPC-style variant of the ABN Lookup SOAP web service, linked from the ABN Lookup web services methods page. It exposes the same search operations (27, without SearchByABNv202001...
- **ABN Lookup JSON Services** — JSONP services for ABN Lookup (AbnDetails.aspx, AcnDetails.aspx, MatchingNames.aspx) that take a callback and the registered user's GUID. No machine-readable contract is publish...

## Security (3)

- **Australian Business Register Authentication** — 1 scheme
- **Australian Business Register Domain Security** — TLSv1.3 · DMARC
- **Australian Business Register Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Australian Business Register Plans Pricing**

## Tags

Company, Government, Australia, Business Registry, ABN, Tax, Public Sector, Open Data

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/australian-business-register/). Scores are computed from the provider's own public artifacts under a published rubric.