ato-mcpCAUTION
Your AI agent, fluent in Australian tax.
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
The Australian tax knowledge base for AI agents.
Connect your AI agent to 34,500+ ATO documents (guidance, legislation, and public rulings) and get cited answers to the tax questions you'd otherwise pay your accountant to answer.
ato-mcp.com.au · Tool reference · Changelog
[](https://github.com/william-laverty/ato-mcp/actions/workflows/ci.yml) [](https://www.npmjs.com/package/ato-mcp) [](https://github.com/william-laverty/ato-mcp/blob/main/LICENSE) [](https://nodejs.org)
Quick start
Add the MCP Server to the client you already use.
Standard config works with most tools that run stdio servers:
{
"mcpServers": {
"ato": {
"command": "npx",
"args": ["-y", "ato-mcp"]
}
}
}npm install -g ato-mcp # optional, npx works without installing
For hosts that natively support remote MCP servers, connect your client directly:
Claude Code
claude mcp add --scope user --transport http ato https://api.ato-mcp.com.au/mcp
Then run /mcp inside Claude Code, select ato, and choose Authenticate. Your browser opens to sign in.
Codex CLI
codex mcp add ato --url https://api.ato-mcp.com.au/mcp codex mcp login ato
codex mcp login opens your browser to sign in.
Gemini CLI
gemini mcp add --scope user --transport http ato ht
323855aed809OBSERVED · 2026-10-12Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.
claude mcp add ato-mcp -- npx -y [email protected]
Trust audit
CAUTIONgrade B · trust 89/100 Install with care. The audit found things worth knowing before you trust its output.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | FAIL |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- declared (2 observation(s))
- Shell
- none-observed
- Dependencies
- pinned
- Secrets in source
- none-found
Findings (4)
rejectUnauthorized: false,
env: { ...process.env, ATO_MCP_URL: "http://127.0.0.1:9/mcp" },expect(stdout).toContain("Checking http://127.0.0.1:9/mcp");Gates applied: no_behavioural_pass.
323855aed809full audit observations/trust-audit/mcp-server/william-laverty__ato-mcp.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-12 | 323855aed809 | CAUTION | B | 89 | first audit |
Questions
What is the ato-mcp MCP server?
Your AI agent, fluent in Australian tax.
Is ato-mcp safe to connect to an agent?
With care. The audit graded it B (89/100) and found 4 things worth knowing before you trust this server, listed below with the exact line each was found on.
What credentials does ato-mcp need?
No credential environment variables were found in its source, so it appears to need none.
How does ato-mcp run?
It speaks stdio and streamable-http, so it runs as a local process your client starts. It is published on npm as ato-mcp at 2.3.0.
How current is this page?
The grade is for one exact copy of the source (323855aed809), read on 2026-10-12. The repository is watched and re-audited when it changes.