zerosmtp-mcp

MCPattested
v1.0.2io.github.msgwingMITUpdated 22d agonpmGitHub

A free SMTP relay that still takes a username and password, for devices that cannot do OAuth 2.0.

Works in
ClaudeCursorCopilotGemini

Inferred from the transports this listing declares (stdio). A client not listed here hasn’t been ruled out — it just isn’t something Forge can confirm.

Attested build
A verified provenance attestation binds this artifact to the listed repository. Nobody has claimed the listing yet — this proves where the code was built, not who stands behind it.
281Downloads/wk
22d agoLast update
Package
Authorio.github.msgwing
LicenseMIT
Version1.0.2
Sourcenpm+mcp-registry
Trust Status
A
85/100Trusted
Listed in Forge index+10/10
Identity verified · attested build+20/20
Ed25519 publish signature+0/5
Included automatically when the publisher runs `forge publish`
Domain verification+0/5
Publisher: host /.well-known/forge.json on the package homepage with { "publisher": "<github-login>" }
npm Trusted Publishing (Sigstore)+5/5
npm maintainer match+0/5
Publisher: add the verified GitHub login to the npm package's maintainers (npm owner add <login>)
CVE scan · clean+30/30
Static analysis · clean+20/20
Paste into Claude Code, Cursor, or any AI assistant to fix all gaps
StatusIdentity verified
PublisherUnverified
SignatureUnsigned
Domain
Provenance✓ Sigstore-verified · 23fe994
Dependencies✓ 0 resolved · none vulnerable
Tool surface4 tools · none privileged
Security scan✓ Cleanv1.0.2 · 22d agoHow well does this scan work?
EvalsNone
IndexedSep 2, 2026

Verification confirms publisher identity (repo ownership), not code safety. The security scan covers known CVEs and suspicious install scripts.

Tools

4 tools · none privileged
Statically extracted from the published packagev1.0.2 · 22d ago

Read out of the source npm actually ships, at scan time. The package was never executed. Tools registered dynamically at runtime, or hidden inside bundled or minified code, can be missed — so this is a floor on the tool surface, not a complete census of it.

lookup_smtp_errorIdentify a Microsoft 365 SMTP AUTH error string and say what it means,

Identify a Microsoft 365 SMTP AUTH error string and say what it means,

No input schema was published for this tool.

check_device_oauthLook up whether a printer, scanner, NAS or firewall has firmware

Look up whether a printer, scanner, NAS or firewall has firmware

No input schema was published for this tool.

relay_settingsThe ZeroSMTP connection values, together with the two limits that decide

The ZeroSMTP connection values, together with the two limits that decide

No input schema was published for this tool.

check_relay_reachableOpen a real TCP connection and TLS handshake to the relay from THIS

Open a real TCP connection and TLS handshake to the relay from THIS

No input schema was published for this tool.

4 of 4 tools published a description.

Tool names and descriptions are written by the publisher and shown verbatim as inert text. They are the strings an MCP client passes to a model, so Forge scans them for prompt-injection patterns — any finding appears with the security scan above. “Privileged” is a keyword match on the tool name, not an audit of what the tool does: a benign-sounding name can still do anything.

About

A free SMTP relay that still takes a username and password, for devices that cannot do OAuth 2.0.

Keywords
mcp
Alternatives
Comparing tool surfaces…

Dependency tree

What one Forge scan resolved from npm metadata on 2026-09-02 — observed resolution, not a publisher declaration.

0 packages resolved · 0 direct · none carrying advisories Resolution stops at depth 4 and 60 packages.

This package declares no runtime dependencies.