JohnKenley
MCP facade over reviewed Australian computational accounting engines. Compatible with Claude Desktop, Claude Code, Cursor, Codex and Antigravity.
[!WARNING]Not tax advice. This server returns structured results, refusals, and citations. It does not lodge, and it does not replace a registered agent. See DISCLAIMER.md.
This server does not reimplement tax law. Payday Super and ATO small-business benchmarks are delegated to:
- CharlesHenryWickens (
payday-super-checker) - RaymondChambers (
ato-benchmark-compare)
Division 7A is refused until a reviewed engine exists. SBR payloads are synthetic fixtures, not lodgments.
Install
Python 3.10+ and uv. The engines install from GitHub because they are not on PyPI, so the one-command path is uvx from this repository:
uvx --from git+https://github.com/ryanduguid/JohnKenley aus-accounting-mcp
Clone and pip install . still works when you want a local editable tree.
Client integration
Standard config works with hosts that run a local stdio MCP server:
{
"mcpServers": {
"aus-accounting": {
"command": "uvx",
"args": [
"--from",
"git+https://github.com/ryanduguid/JohnKenley",
"aus-accounting-mcp"
]
}
}
}
Ready-made copies live in clients/.
Cursor
Or drop the standard config into ~/.cursor/mcp.json.
Claude Desktop
Paste the standard config into claude_desktop_config.json (%APPDATA%\Claude\ on Windows, ~/Library/Application Support/Claude/ on macOS).
Claude Code
claude mcp add aus-accounting -- uvx --from git+https://github.com/ryanduguid/JohnKenley aus-accounting-mcp
Codex
codex mcp add aus-accounting -- uvx --from git+https://github.com/ryanduguid/JohnKenley aus-accounting-mcp
Tools
| Tool | Job | Engine |
|---|---|---|
list_ato_benchmark_industries |
List or search the shipped ATO business types | ato-benchmark-compare |
get_ato_benchmarks |
Compare operator-supplied bucket totals to ATO ranges | ato-benchmark-compare |
calc_payday_super_deadline |
Review one contribution against Payday Super timing | payday-super-checker |
calc_div7a_repayment |
Returns a refusal. No reviewed Div 7A engine is wired | none |
generate_synthetic_sbr_fixture |
Synthetic CTR/BAS for agent tests (synthetic: true) |
local fixture |
calc_payday_super_deadline requires as_at. It does not invent clearing-house latency and cannot confirm LCR 2026/1 transition allocation. A remittance date alone cannot produce ON_TIME. Omitted ATO expense buckets are not_supplied, not zero.
Amounts are decimal strings, finite, at most two decimal places, and no greater than AUD 1,000,000,000,000.00. Dates are ISO-8601. Payday Super uses payday-super-checker's national SGAA 1992 s 6(1) calendar.
Ask the agent:
Compare these P&L buckets to the ATO small-business benchmarks for this industry. Omit buckets I have not supplied. Do not treat missing as zero.
Review this Payday Super contribution. QE day, remitted date, and fund-receipt date are in the CSV. as_at is today. Do not invent an SGC charge.
Licence
MIT License. Created by Ryan Duguid. Boundary statement: DISCLAIMER.md. Discovery copy: docs/DISCOVERY.md. Cite: CITATION.cff.
