ato-mcp — Watchlist | MCP100 Index

MCP100 Assessment

Watchlist / Tracking

Why we’re tracking it

Recheck a specific changing behavior of npm/ato-mcp: Has the hosted corpus/source freshness or OAuth relay changed, and is the non-affiliation with the Australian Taxation Office clear?

Reviewed Oct 9, 2026 · Documentation review; complete setup workflow not independently tested

Best fit

Australia tax-law research

What we know

Australian tax research MCP with citations (per roster); actual official scope and publisher to verify.

Maintenance / activity evidence

Official ato-mcp changelog documents first public release 1.0.0 in 2026-06 and a subsequent 2.2.x migration to OAuth proxy operation.

Tracking evidence observed Oct 9, 2026. These dated signals do not establish current maintenance. Reviewed enrichment confidence: high.

Verification gaps / watch-outs

Installation and comprehensive security have not been independently audited.
Unofficial Australian tax information product, not an Australian Taxation Office-operated endpoint; citation and date caveats required. Complete write authority is not verified.
Authentication not yet verified.
Australian tax reference search; the publisher is an independent project, not the Australian Taxation Office.

Australian tax reference search; the publisher is an independent project, not the Australian Taxation Office.
Advisory/security review not completed; no safety badge.
Unknown vulnerabilities and provider data handling are not certified by this public tracking review.

Full authority, access and evidence limits are available in Review context and Access & risk.

Popularity

11 shared-repository stars · 1.2k package downloads / 30 days

Stars observed Oct 9, 2026. Downloads observed Oct 9, 2026.

Repository total for william-laverty/ato-mcp; not package-specific.

Exact npm package ato-mcp; provider interval 2026-09-08–2026-10-07 (inclusive); observed 2026-10-09.

All limitations / Review context

Has the hosted corpus/source freshness or OAuth relay changed, and is the non-affiliation with the Australian Taxation Office clear?

No identified material blocker to an accurately qualified public tracking entry in the limited cited evidence. This is not an installation safety certification; product-specific cautions must remain visible.

Australian tax reference search; the publisher is an independent project, not the Australian Taxation Office.
Advisory/security review not completed; no safety badge.
Unofficial Australian tax information product, not an Australian Taxation Office-operated endpoint; citation and date caveats required.
Complete write authority is not verified.
Installation, client compatibility and comprehensive security have not been independently audited. Authentication and access depend on the configured services.
Not an official Australian Taxation Office server; tax content and personal profile data may be processed on hosted infrastructure; tax advice needs independent verification.
Unknown vulnerabilities and provider data handling are not certified by this public tracking review.
Release evidence proves attributable activity, not entire installation or tool-level safety.
Current Discovery source binding and atomic apply must be generated using MCP100 existing pipeline.
exact authentication contract
first-party data processing and retention
data retention and permission scope
Write actions/tool inventory not confirmed against exact tool documentation; listed action classes remain illustrative or context-dependent. Empty inventory does not establish read-only.
Do not claim authoritative ATO affiliation or guaranteed tax correctness.
Independent tax-information index; not an official Australian Taxation Office-operated MCP and not personalized tax advice.
Hosted tax corpus, personal profile data, and relevance of legal/tax sources must be evaluated independently; not an Australian government official.
Radar public tracking editorial review completed in limited scope; not a security or installation certification. Verify setup according to deployment mode and do not invent unresolved facts.

Original activity observations

Official ato-mcp changelog documents first public release 1.0.0 in 2026-06 and a subsequent 2.2.x migration to OAuth proxy operation.

Technical identity

npm/ato-mcp

Exact implementation source: https://www.npmjs.com/package/ato-mcp ↗
Reviewed resource type: MCP Server
Repository identity: william-laverty/ato-mcp
Package identity: npm:ato-mcp
Service endpoint: https://api.ato-mcp.com.au/mcp

Evidence & Sources

Evidence basis: Recorded source evidence
Setup runtime verification: Not independently runtime-tested by MCP100 for this setup workflow.

Reviewed Oct 9, 2026 · Latest source observation Oct 9, 2026

GitHub repository ↗
william-laverty/ato-mcp
Recorded repository material and project history.
Includes references whose attribution is not established.
Package registry ↗
ato-mcp
Recorded package identity, distribution or download evidence.
Includes references whose attribution is not established.

Setup · Watchlist

Install & Agents

Publisher instructions.

Source evidence observed Oct 14, 2026.

Additional setup details required — see the specific gaps below.

Warning

Not runtime tested, no third-party installation, network authorization, paid calls, or mutation executed.
Do not claim production service is available based on README alone.
Remote OAuth; ATO data not a substitute for professional tax advice
Official npm publisher package page README inspected for this exact npm identity; static research only. Some setup statements are conservatively summarized; no source code or live client execution checked. V2 review did not run any live client.
Check actual host syntax and supply credentials in secure client environment; do not paste placeholders verbatim.
Avoid write, payment, token transfer, publishing, sending, booking and remote account changes as tests.
Replace credential, action and registration placeholders; follow the matching publisher/client prerequisites. No execution performed.
Use the matching host, actual registration name and original installation environment; this does not revoke credentials.

Install / connect
Publisher instructions
Remote OAuth; ATO data not a substitute for professional tax advice | Publisher npm README revisited on 2026-10-14; exact identity retained.
Reviewed setup example · Claude Code only · Publisher instructions
claude mcp add --scope user --transport http ato https://api.ato-mcp.com.au/mcp
Reviewed setup example · Codex only · Publisher instructions
codex mcp add ato --url https://api.ato-mcp.com.au/mcp codex mcp login ato
Configure / authenticate
MCP100 setup guide
Hosted OAuth route: complete browser sign-in; Codex alternative `codex mcp add ato --url ...` then `codex mcp login ato`.
Check connection
Suggested check
Inspect signed-in connection and tool availability; do not submit tax data as check.
Remove / uninstall / revoke
MCP100 setup guide
If registered by the publisher Claude Code example under `ato`, run the provided unregister command; for a different MCP client or name, delete the actual client registration. Removing a local client entry is distinct from deleting a vendor account/token.
Remove named client registration · Claude Code only · MCP100 composed guide
claude mcp remove ato

Official Documentation & Sources

What it does

Australian tax research MCP with citations (per roster); actual official scope and publisher to verify.

Capability: Finance & Payments
Resource type: MCP Server
Industry: Legal & Compliance
Best fit: Australia tax-law research

Representative uses

Primary-source tax provenance not independently confirmed

Limitations

Do not claim authoritative ATO affiliation or guaranteed tax correctness.
Independent tax-information index; not an official Australian Taxation Office-operated MCP and not personalized tax advice.
Hosted tax corpus, personal profile data, and relevance of legal/tax sources must be evaluated independently; not an Australian government official.
Radar public tracking editorial review completed in limited scope; not a security or installation certification. Verify setup according to deployment mode and do not invent unresolved facts.

Reviewed access

Access & risk

Review the exact access boundary before connecting this MCP to accounts, credentials, or sensitive data.

Authentication: Not documented in the reviewed sources
Permissions: Unofficial Australian tax information product, not an Australian Taxation Office-operated endpoint; citation and date caveats required.
Data handling: Not documented in the reviewed sources
Cost: unknown
Risk and cautions: Australian tax reference search; the publisher is an independent project, not the Australian Taxation Office.

Access scope and cautions

Write actions: Not verified
Risk level: moderate
Security notes: Advisory/security review not completed; no safety badge.

The reviewed evidence does not establish the complete write authority of this MCP. Consult the unresolved evidence before granting write access.

FAQ

Based on reviewed evidence as of 2026-10-09. Watchlist tracking is not a recommendation or a security certification.

Which tasks are documented for this implementation?

The reviewed tasks include: Primary-source tax provenance not independently confirmed.

What setup and authentication are documented?

Recorded installation/entrypoint step: npx -y ato-mcp. Recorded endpoint: https://api.ato-mcp.com.au/mcp. Recorded transport: stdio, streamable_http. Recorded environment-variable notes: ATO_MCP_URL (optional, stdio bridge target; defaults to https://api.ato-mcp.com.au/mcp). No configuration values are supplied here. Prerequisites: MCP client; Account/login for hosted endpoint. Client notes: Connect with a stdio MCP client; alternatively authenticate at https://api.ato-mcp.com.au/mcp. Official v2.0.0 removed ATO_MCP_TOKEN and uses browser OAuth via mcp-remote; do not reuse legacy bearer-token configuration. These are the documented setup details, not a claim that installation or client compatibility was independently tested. Authentication: Hosted MCP uses browser-based OAuth login; the npm stdio package bridges to the hosted server.

Can it modify data or perform write operations?

Not verified. The available evidence does not establish the complete write authority. Recorded permission context: Unofficial Australian tax information product, not an Australian Taxation Office-operated endpoint; citation and date caveats required.

What limitations and risks should I check before use?

Australian tax reference search; the publisher is an independent project, not the Australian Taxation Office. Authoritative ATO affiliation and guaranteed tax correctness are not established. Independent tax-information index; not an official Australian Taxation Office-operated MCP and not personalized tax advice. Hosted tax corpus, personal profile data, and relevance of legal/tax sources must be evaluated independently; not an Australian government official. Radar public tracking editorial review completed in limited scope; not a security or installation certification. Verify setup according to deployment mode. Advisory/security review not completed; no safety badge. Not an official Australian Taxation Office server; tax content and personal profile data may be processed on hosted infrastructure; tax advice needs independent verification. Unknown vulnerabilities and provider data handling are not certified by this public tracking review.