io.github.marcosnovo/lexvibe

What we checked

Six static checks, weighted by risk. Every result reflects only what could be observed in the published package and repository — never intent.

• Injection surface

  warn25% of grade

  Tool descriptions/manifest scanned for instruction-injection patterns (imperatives at the model, hidden text, 'ignore previous', data-exfil URLs).

  tool "check_website" param "url" description: off-vendor URL in a description (myapp.com); capability text should not name where data goes. tool "check_store" param "url" description: off-vendor URL in a description (apps.apple.com); capability text should not name where data goes. tool "check_store" param "url" description: off-vendor URL in a description (play.google.com); capability text should not name where data goes. tool "generate_policies" description: off-vendor URL in a description (golexvibe.com); capability text should not name where data goes.

• Supply chain

  warn25% of grade

  Package provenance: namespace verification, repo linkage, maintainer count, account age, postinstall scripts, typosquat distance.

  package name "@lexvibe/mcp" is edit-distance 2 from popular package "yup" (typosquat candidate)

• Credential hygiene

  pass15% of grade

  How the server takes secrets (env vs plaintext config vs hardcoded); secrets appearing in tool schemas.

  No hardcoded secrets, secret-shaped tool parameters, or leaked keys found. PASS = no static red flag; static analysis cannot prove the code honors env-based secret handling at runtime.

• Permission scope

  pass15% of grade

  Declared tools vs. breadth (filesystem, network, exec); flags shell-exec and unbounded filesystem access.

  No shell-exec, unbounded/sensitive filesystem, or download-and-run primitives found in scanned source. PASS = no static red flag. Static scanning is blind to code fetched or executed at runtime.

• Version behavior

  fail10% of grade

  Diff of tool definitions between versions; new permissions or changed descriptions in a patch release (the postmark-mcp class).

  vs prior 0.1.6 (patch bump): new tool "check_website" touches a sensitive surface (email/exec/net/fs); new tool "check_store" touches a sensitive surface (email/exec/net/fs); new tool "generate_policies" whose description contains embedded outbound URL; new tool "check_ai_act" touches a sensitive surface (email/exec/net/fs); new tool "get_install_snippet" touches a sensitive surface (email/exec/net/fs); new tool "claim_app" touches a sensitive surface (email/exec/net/fs); new tool "get_claim_status" touches a sensitive surface (email/exec/net/fs); new hardcoded outbound host/BCC destination(s): github.com, golexvibe.com.

• Transport config

  fail10% of grade

  Remote servers: TLS and auth mode (none/token/OAuth). Local servers: whether the manifest indicates it phones home.

  remote MCP endpoint declares NO authentication (unauthenticated remote — nginx-ui/CVE-2026-33032 class)