previews@0.4.0
VERIFIEDPublisher claims: "Enables AI coding agents to deploy and iterate on live web previews, inspect diffs, manage versions and access controls, and authenticate via Google through local or remote MCP transports." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Server started and answered tools/list.- Tested
- MCP initialize and tools/list · every tool description, for hidden instructions · every file read, file written and host contacted by what ran
- Not tested
- what the tools do when called with real credentials
Before you give it your token
Code inventory arrives with this version's next honeypot run.- It will ask for
- unknown until the next run
- Where it talks to
- unknown until the next run
- What the honeypot saw
- no credential files read · no network
- What we could not test
- what the tools do when called with real credentials
The run was clean; the code inventory is pending. Server started and answered tools/list. What the code asks for and which hosts it names arrive with the next run; until then, connect it under the guard with the network pinned to what the honeypot saw.
Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.
Is [email protected] safe to install?
KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios) on 2026-11-07 and scored it 82/100 (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 · 0 s · 2 scenarios · 0 deviationsStatic findings
npx preview-mcp setup [app] [options]Fix: Pin versions and sources; vendor anything fetched at install time.console.log('You can sign in later by running: npx preview-mcp login\n');Fix: Pin versions and sources; vendor anything fetched at install time.Please return to your terminal and run <code>npx preview-mcp login</code> to retry.Fix: Pin versions and sources; vendor anything fetched at install time.<link href="https://fonts.googleapis.com/css2?family=Albert+Sans:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&family=Material+Symbols+Outlined:opsz,wght,FILL,[email protected],100..700,0.Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.<link href="https://fonts.googleapis.com/css2?family=Albert+Sans:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&family=Material+Symbols+Outlined:opsz,wght,FILL,[email protected],100..700,0.Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.text: `### Previews Authentication Required\n\nPlease visit [${config.baseUrl}/auth/login](${config.baseUrl}/auth/login) in your browser to sign in with Google.\n\nThen run \`npx preview-mcp login\` oFix: Pin versions and sources; vendor anything fetched at install time.- **Desktop App Auto-Setup**: Run `npx preview-mcp setup` to auto-configure Claude Desktop, Cursor, and sign in with Google.Fix: Pin versions and sources; vendor anything fetched at install time.- **Login / Re-authenticate**: Run `npx preview-mcp login` to authenticate with your Google account.Fix: Pin versions and sources; vendor anything fetched at install time.Cost to the agent
Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.
Known vulnerabilities
Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.