Is ato-mcp@2.3.0 safe to install?

ato-mcp@2.3.0

VERIFIED

Publisher claims: "Cited Australian tax answers from 34,500+ ATO documents, legislation and public rulings." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server) · listed in the official MCP RegistryPublisher com · joined 0 days agoInstalls 0Last detonated 2 h ago

$claude mcp add ato-mcp -- npx -y ato-mcp

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Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios) on 2026-11-03 and scored it 88/100 (Verified). It did what it claims and nothing else we could detect: no undeclared network egress, no credential reads, no persistent instruction writes. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 4 s · 2 scenarios · 0 deviations

t+CategoryObserved action

0.0sprocessno install scripts in bundle

3.8sprocessdependency install exit 1

4.2sprocessexec /usr/bin/timeout

4.2sprocessexited 1: - /tmp/ks-detonate-c02FlJ/task/home/work/acme-api/.claude/skills/ato-mcp/dist/index.js

4.2sclaimedno tools/list reply (exit 1)

4.2sprocessscript backend runs setup only

Static findings

CRITICAL

Prompt injectionREADME.md:153 · Prompt injection — known jailbreak technique referenceFix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.

AST01

HIGH

Authorization escalation languageREADME.md:153 · Authorization escalation languageFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.

AST01