io.github.nagarjunr/data-connectors-postgres

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

  unscannable25% of grade

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

  No tool descriptions, server instructions, prompts, or resources were fetched; nothing to scan for injection.

• Supply chain

  pass25% of grade

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

  Python build script has no build-time network/exec; repository linkage verified

• Credential hygiene

  pass15% of grade

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

  Reads secrets from the environment (e.g. mcp_servers/gcp_bucket/server.py) — the recommended intake shape. PASS = no static red flag; static analysis cannot prove the code honors env-based secret handling at runtime.

• Permission scope

  warn15% of grade

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

  discloses broad/destructive filesystem access: modules/gcp_bucket/client.py: open(…, 'w'/'a'/'x') write-mode file access discloses broad/destructive filesystem access: modules/onedrive/client.py: open(…, 'w'/'a'/'x') write-mode file access discloses broad/destructive filesystem access: modules/s3_bucket/async_client.py: open(…, 'w'/'a'/'x') write-mode file access discloses broad/destructive filesystem access: modules/s3_bucket/client.py: open(…, 'w'/'a'/'x') write-mode file access discloses broad/destructive filesystem access: modules/sharepoint/client.py: open(…, 'w'/'a'/'x') write-mode file access Capability DISCLOSURE, not a verdict: static analysis sees the primitive is present and reachable, not whether its use is attacker-controlled.

• 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 0.1.5 (patch bump): new capability primitive(s) in source: fs-write, http-client; new hardcoded outbound host/BCC destination(s): example.com, graph.microsoft.com, login.microsoftonline.com, signed.example.com, storage.googleapis.com, www.googleapis.com.

• Transport config

  warn10% of grade

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

  manifest/source references heartbeat behavior — disclosure