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io.github.chrischall/gogcli-mcp

io.github.chrischall/gogcli-mcp v2.25.0

Security Trust Score
Grade B · Moderate posture
Tier 1 · Public sourceHigh confidence · 98%
Declared MCP capabilities
ResourcesPrompts

Host io.github.chrischall/gogcli-mcp in a governed environment — SSO in front, every tool call attributed and audited.

Reputation1stars1forks3.3kdownloads/mo1open issues11d agolast commit<1yage

Security controls

Deterministic, evidence-backed. Score earned from passing controls; a failed guard caps it.

Model–MCP Runtime Guardrails

  • Warn
    Strict JSON Schema Enforcementschemas not strict

    Tool inputs are constrained (additionalProperties:false), so unexpected arguments can't be smuggled in.

    Fix: Set additionalProperties:false and require explicit parameters on every tool.

  • Warn
    Tool Definition Integrityguard1 tool description(s) drifted after publish (no risk signals in diff)

    Every consecutive version pair is diffed for new injection markers or destructive scope — a risky diff anywhere in history is a rug-pull (fail, durable); benign description drift warns.

    gog_gmail_send

    Fix: Never add hidden directives or destructive scope to an already-published tool; document description changes in release notes.

  • Pass
    Indirect Prompt Injection (IPI) Defensesguardno injection markers

    Tool/prompt/resource text is free of hidden instructions that could hijack the agent.

  • Pass
    User-in-the-Loop / Approval Scopeguardno destructive tool scope

    No over-broad or destructive tools (arbitrary shell, bulk-delete) that warrant human approval.

Application Security Checks

  • Warn
    No path traversalguard3 occurrences

    Naive path checks let tools read/write outside intended directories (EscapeRoute-class).

    src/connector-runtime.ts:257src/pagination.ts:24src/tools/drive.ts:232

    Fix: Resolve to a canonical path and verify containment; reject ../ and symlinks.

  • Warn
    No SSRF sinksguard4 occurrences

    Fetching tool-supplied URLs can pivot into internal networks and metadata services.

    src/connector-auth.ts:129src/connector-auth.ts:237src/connector-runtime.ts:567src/connector-runtime.ts:720

    Fix: Allow-list destinations; reject arbitrary/loopback/link-local URLs.

  • Warn
    Dependencies pinned (lockfile)no lockfile found

    A lockfile makes installs reproducible and resistant to silent dependency swaps.

    Fix: Commit a lockfile (package-lock.json / pnpm-lock.yaml / poetry.lock).

  • Warn
    Established maintainersingle maintainer

    Brand-new / single anonymous maintainers raise takeover and malware risk.

    Fix: Publish under an established account/org; add multiple maintainers.

  • Warn
    Has a security policyno security policy

    A SECURITY.md gives a private path to report vulnerabilities.

    Fix: Add SECURITY.md with a disclosure contact and process.

  • Pass
    No command-injection sinksguardno sinks found

    Untrusted tool input reaching a shell yields remote code execution.

  • Pass
    No dynamic code executionguardno sinks found

    eval()/exec()/Function() on tool-derived strings allows arbitrary code execution.

  • Pass
    No unsafe deserializationguardno sinks found

    pickle/yaml.load/etc. on untrusted data can execute code.

  • Pass
    No committed secretsguardno secrets found

    Hardcoded keys/tokens in published source are live credentials an attacker can use.

  • Pass
    Credentials sourced from environmentreads credentials from environment

    Reading secrets from env/secret stores avoids hardcoding them.

  • Pass
    No known-vulnerable dependencies1 runtime deps, no known CVEs

    Runtime dependencies (parsed from the lockfile) are scanned against OSV.dev for published CVEs. Advisory: flagged dependencies lower the score but don't hard-cap it, since transitive reachability is unproven.

  • Pass
    No install/post-install scriptsguardno install scripts

    install hooks run arbitrary code on every consumer at install time.

  • Pass
    Package name not typosquattingguarddistinct package name

    Names mimicking popular packages are a common malware delivery vector.

  • Pass
    Published with provenancepublished with provenance

    Build provenance attests the artifact was built from the claimed source by CI.

  • Pass
    Actively maintainedrecent commits

    Unmaintained servers don't receive security fixes.

  • Pass
    Repository not archivedguardactive

    Archived repositories will never be patched.

  • Pass
    Declares a licenseMIT

    A clear license is required for legal enterprise use.

  • Pass
    Adoption & popularityestablished adoption

    A small, capped nudge from stars/downloads — widely-used servers get more eyes on bugs. It can never offset a real security failure.

  • Not checked
    Signed releasesnot evaluated

    Signed releases let consumers verify artifacts weren't tampered with.

Transport & Trust Model

  • Warn
    Execution Sandboxingruns natively (no container image)

    A container/sandbox image limits blast radius; a server that runs natively has full host access.

    Fix: Ship a Dockerfile/Containerfile (or document a sandboxed run) so the server runs isolated.

  • Pass
    Network Exposureno bind-all detected

    Binding 0.0.0.0 or exposing debug inspectors widens the attack surface.

  • N/A
    Transport Encryption (TLS)guardno remote endpoints

    Plaintext HTTP exposes traffic and bearer tokens to interception.

  • N/A
    IAM / Authentication Scopingno remote endpoints

    OAuth 2.1 / Protected Resource Metadata gates who can invoke tools.

  • N/A
    Live Endpoint Reachablenot dynamically scanned

    A dynamic scan connected to the declared remote endpoint and it responded — verified live, not a dead URL.

  • N/A
    Authentication Enforced (live)not dynamically scanned

    If the server declares auth is required, it must actually reject anonymous clients. Serving tools to unauthenticated callers is a real exposure.

Tools (80)

gog_api_callgog_api_listgog_auth_addgog_docs_catgog_drive_lsgog_auth_listgog_docs_infogog_drive_getgog_gmail_getgog_tasks_addgog_tasks_getgog_docs_writegog_drive_movegog_gmail_sendgog_sheets_getgog_tasks_listgog_auth_healthgog_auth_statusgog_docs_creategog_drive_mkdirgog_drive_sharegog_slides_copygog_slides_infogog_tasks_listsgog_api_describegog_auth_add_urlgog_calendar_getgog_contacts_getgog_drive_deletegog_drive_renamegog_drive_searchgog_gmail_searchgog_sheets_cleargog_auth_servicesgog_contacts_listgog_sheets_appendgog_sheets_creategog_sheets_updategog_slides_creategog_slides_exportgog_docs_structuregog_calendar_creategog_calendar_deletegog_calendar_eventsgog_calendar_updategog_contacts_creategog_contacts_searchgog_sheets_metadatagog_calendar_respondgog_classroom_rostergog_drive_read_bytesgog_auth_add_completegog_docs_find_replacegog_slides_read_slidegog_drive_extract_textgog_slides_list_slidesgog_sheets_find_replacegog_classroom_topics_getgog_classroom_courses_getgog_classroom_profile_getgog_classroom_topics_listgog_classroom_courses_listgog_classroom_students_getgog_classroom_teachers_getgog_classroom_students_listgog_classroom_teachers_listgog_classroom_coursework_getgog_classroom_coursework_listgog_classroom_invitations_getgog_classroom_submissions_getgog_classroom_invitations_listgog_classroom_submissions_listgog_classroom_announcements_getgog_classroom_submissions_gradegog_classroom_announcements_listgog_classroom_invitations_acceptgog_classroom_submissions_returngog_classroom_submissions_reclaimgog_classroom_submissions_turn_ingog_classroom_announcements_create

AI-flagged — for review

Observations from an AI review of tool descriptions. These are advisory only and do not affect the score — they can be noisy and need human judgement.

  • info
    Tool "gog_gmail_send" description changed after publish

    Benign definition drift: the description changed vs the prior version with no risk signals in the diff. Clients approve tools by name and don't re-review on update, so the change is invisible to existing grants.