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io.github.lonniev/cypher-mcp

io.github.lonniev/cypher-mcp v0.5.2

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

This server scored D. Run it behind runtime policy enforcement so one bad tool call can't become an incident.

1 issue capping this score
  • highTool descriptions free of injection markers — 2 marker(s) across 2 tool(s)
Reputation0stars0forks0open issuestodaylast commit<1yage

Security controls

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

Model–MCP Runtime Guardrails

  • Fail
    Indirect Prompt Injection (IPI) Defensesguard2 marker(s) across 2 tool(s)

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

    cypher_request_credential_channel — exfiltration directivecypher_receive_credentials — exfiltration directive

    Fix: Remove hidden directives, HTML/comment instructions, and override phrasing from descriptions.

  • 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.

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

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

  • N/A
    Tool Definition Stabilityguardno prior version to diff

    Tool definitions did not change after publish — no post-approval rug-pull.

Application Security Checks

  • Warn
    No known-vulnerable dependencies2 of 90 runtime deps vulnerable; worst high

    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.

    [email protected] — GHSA-vj7q-gjh5-988w[email protected] — GHSA-4xgf-cpjx-pc3j

    Fix: Upgrade the flagged dependencies past their fixed versions.

  • 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.

  • Warn
    Adoption & popularitylimited adoption

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

    Fix: Adoption grows naturally with real-world use; this never gates the score.

  • 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 path traversalguardno sinks found

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

  • Pass
    No SSRF sinksguardno sinks found

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

  • 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
    Dependencies pinned (lockfile)lockfile present

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

  • Pass
    Actively maintainedrecent commits

    Unmaintained servers don't receive security fixes.

  • Pass
    Repository not archivedguardactive

    Archived repositories will never be patched.

  • Pass
    Declares a licenseApache-2.0

    A clear license is required for legal enterprise use.

  • Not checked
    Signed releasesnot evaluated

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

  • N/A
    No install/post-install scriptsguardno published package

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

  • N/A
    Package name not typosquattingguardno published package

    Names mimicking popular packages are a common malware delivery vector.

  • N/A
    Published with provenanceno published package

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

  • N/A
    Established maintainerno published package

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

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
    Transport Encryption (TLS)guardall remotes use HTTPS

    Plaintext HTTP exposes traffic and bearer tokens to interception.

  • Pass
    IAM / Authentication ScopingOAuth / PRM handling detected

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

  • Pass
    Network Exposureno bind-all detected

    Binding 0.0.0.0 or exposing debug inspectors widens the attack surface.

  • 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 (61)

cypher_get_querycypher_check_pricecypher_mint_couponcypher_create_querycypher_delete_querycypher_list_couponscypher_list_queriescypher_oracle_aboutcypher_publish_toolcypher_update_querycypher_check_balancecypher_check_paymentcypher_delete_couponcypher_forget_couponcypher_record_triagecypher_redeem_couponcypher_update_couponcypher_note_rejectioncypher_service_statuscypher_session_statuscypher_unpublish_toolcypher_adoption_statuscypher_link_root_causecypher_list_my_couponscypher_notarize_ledgercypher_restore_creditscypher_assert_rationalecypher_purchase_creditscypher_register_servicecypher_request_adoptioncypher_account_statementcypher_get_nostr_profilecypher_get_pricing_modelcypher_set_pricing_modelcypher_check_proof_statuscypher_forget_credentialscypher_list_notarizationscypher_oracle_how_to_joincypher_receive_npub_proofcypher_request_npub_proofcypher_oracle_get_tax_ratecypher_receive_credentialscypher_reset_pricing_modelcypher_restore_neon_schemacypher_execute_query_by_keycypher_find_airline_flightscypher_oracle_lookup_membercypher_list_constraint_typescypher_publish_nostr_profilecypher_get_notarization_proofcypher_check_authority_balancecypher_oracle_network_advisorycypher_bind_rationale_to_symbolcypher_delete_patron_credentialcypher_update_patron_credentialcypher_list_canonical_identitiescypher_request_credential_channelcypher_get_patron_credential_fieldscypher_get_patron_onboarding_statuscypher_account_statement_infographiccypher_get_operator_onboarding_status