io.github.MarcellM01/tinysearch

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

  warn15% of grade

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

  tests/test_web_search_service.py: assigns a literal to api_key (supe…ey (len 16)) — non-provider secret literal; prefer environment intake. Reads secrets from the environment (e.g. src/tinysearch/servers/fastapi_server.py) — the recommended intake shape.

• Permission scope

  warn15% of grade

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

  discloses shell/exec capability: src/tinysearch/services/browser_bundle_service.py: subprocess.* call 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 0.3.2 (minor bump): new capability primitive(s) in source: subprocess; new hardcoded outbound host/BCC destination(s): 10.0.0.1, 127.0.0.1, 169.254.0.1, 172.20.210.53, 192.168.1.1, 224.0.0.1, 93.184.216.34, allowed.example, api.search.brave.com, badexample.com, blocked.example, brave.example, ddgs.example, duck.example, example.com, example.test, github.com, internal.example, news.blocked.example, news.example.com, one.example, other, redirected.example, searxng, spammy-site.test, two.example, user, www.example.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 telemetry behavior — disclosure