io.github.Krv-Labs/topos

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. extensions/vscode/scripts/check-vsix-size.js) — the recommended intake shape. PASS = no static red flag; static analysis cannot prove the code honors env-based secret handling at runtime.

• Permission scope

  fail15% of grade

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

  HIGH: downloads and pipes straight to a shell (topos/cli/update.py: pipes a download into a shell). has both shell/exec and destructive filesystem writes (extensions/vscode/scripts/stage-binary.js: imports child_process and calls exec/spawn; extensions/vscode/scripts/stage-binary.js: destructive/writing fs.* call (write/unlink/rm/chmod/rename)). discloses shell/exec capability: 7 files (extensions/vscode/scripts/stage-binary.js, extensions/vscode/src/extension.ts, topos/cli/update.py, +4 more) discloses broad/destructive filesystem access: 5 files (extensions/vscode/scripts/stage-binary.js, extensions/vscode/scripts/test-stage-binary.js, extensions/vscode/src/runtime.ts, +2 more) 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 0.4.4 (minor bump): new capability primitive(s) in source: child_process, dynamic-eval, fs-write, subprocess; new hardcoded outbound host/BCC destination(s): 127.0.0.1, benchmarksgame-team.pages.debian.net, code.visualstudio.com, docs.krv.ai, docs.python.org, github.com, krv.ai, pypi.org, raw.githubusercontent.com, salsa.debian.org, x.

• 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 tracking behavior — disclosure