io.github.jbobbink/glippy-mcp

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.

  repository linkage verified

• Credential hygiene

  warn15% of grade

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

  src/agent-access.js: assigns a literal to token (OAI-…ot (len 13)) — non-provider secret literal; prefer environment intake. src/agent-access.js: assigns a literal to token (Clau…ot (len 16)) — non-provider secret literal; prefer environment intake. src/agent-access.js: assigns a literal to token (Perp…ot (len 13)) — non-provider secret literal; prefer environment intake. src/agent-access.js: assigns a literal to token (Chat…er (len 12)) — non-provider secret literal; prefer environment intake. src/agent-access.js: assigns a literal to token (Perp…er (len 15)) — non-provider secret literal; prefer environment intake. Reads secrets from the environment (e.g. src/chrome-fetcher.js) — the recommended intake shape.

• Permission scope

  warn15% of grade

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

  references credential paths: src/geo-checker.js: references a credential path (/mcp.json) 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 0.7.1 (minor bump): new capability primitive(s) in source: child_process, http-client; new hardcoded outbound host/BCC destination(s): ., claude.com, developer.chrome.com, developers.openai.com, discover.shopifyapps.com, docs.perplexity.ai, example.com, github.com, glippy-mcp-api.info-8cb.workers.dev, glippy.dev, host, llmstxt.org, openai.com, perplexity.ai, support.claude.com, user, www.glippy.dev, www.google.com, www.perplexity.com, 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