Deduction Discovery
Surfaces every plausibly-applicable deduction category for your taxpayer shape, cited and confidence-rated.
deduction_discovery({ activity: "bought a laptop" })What your agent can actually do
The questions that come back every year
What can I claim, how does the laptop write off, what goes on the BAS, is anything risky. Four workflows that run the numbers deterministically, shaped to your taxpayer structure, with the ATO source on every line.
Depreciation Helper
Computes prime-cost, diminishing-value, IAWO, pool and Div 43 schedules deterministically.
depreciation_helper({ asset_cost: 4800, acquisition_date: "2025-09-01", effective_life_years: 3 })BAS Prep Checklist
Builds a tiered, cited BAS checklist for your reporting period: labels, evidence, gotchas.
bas_prep_checklist({ period_type: "quarterly", quarter: 2 })Audit Risk Check
Runs heuristic ATO red-flags over a draft return, risk-banded with the guidance behind each.
audit_risk_check({ income: 90000, deductions: [...] })Straight from the source
Eight ways into 34,500+ ATO documents: hybrid search, whole documents in reading order, statutory definitions, point-in-time thresholds and the citation graph connecting them.
Search
Runs hybrid keyword and semantic retrieval over the whole corpus, rank-fused and point-in-time aware.
search({ query: "instant asset write-off eligibility", k: 5 })Get Chunks
Resolves chunk_ids to full passages, with optional neighbouring context.
get_chunks({ chunk_ids: ["legis:…/8-1#0"], neighbours: 1 })Get Doc
Fetches a whole document: metadata, full text in reading order, and its anchor list.
get_doc({ doc_id: "legis:c2004a05138/8-1" })Get Doc Anchors
Returns the citation graph around a document: anchors, inbound and outbound references.
get_doc_anchors({ doc_id: "legis:c2004a05138/8-1" })Get Definition
Returns statutory definitions (ITAA 1997 Dictionary and friends), point-in-time selectable.
get_definition({ term: "depreciating asset" })Get Threshold
Returns time-keyed scalar facts: the IAWO limit, GST registration threshold, CGT discount and super caps.
get_threshold({ name: "instant_asset_write_off" })Fetch
Live-fetches a page by URI scheme (ato:, ato-law:, legis:) when freshness matters.
fetch({ uri: "ato:tax-rates-and-codes/…" })Stats
Returns a live corpus snapshot: document counts and the schema version.
stats({})It knows your situation
One read of your saved tax profile replaces twenty clarifying questions. Sole trader or company, GST-registered or not: answers fit how you actually operate.
Get User Facts
Returns your onboarded profile: 25 facts the agent reads once per session instead of re-asking.
get_user_facts({})Full reference documentation: github.com/william-laverty/ato-mcp/docs/tools.md