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YosefHayim/ebay-mcp

YosefHayim/ebay-mcp vmain@91394f4

Security Trust Score
Grade F · Serious issues
Tier 1 · Public sourceHigh confidence · 98%
Declared MCP capabilities
ResourcesPrompts

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

1 issue capping this score
  • criticalNo command-injection sinks — 2 occurrences
Reputation189stars72forks0open issues12d 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.

  • Pass
    Indirect Prompt Injection (IPI) Defensesguardno injection markers

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

  • Pass
    Tool Definition Integrityguardtool definitions stable; no risky changes in version history

    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.

  • 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

  • Fail
    No command-injection sinksguard2 occurrences

    Untrusted tool input reaching a shell yields remote code execution. How many servers fail this?

    src/scripts/devSync.ts:195src/scripts/devSync.ts:207

    Fix: Never pass tool arguments to a shell; use argv arrays with shell disabled.

  • Warn
    No path traversalguard27 occurrences

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

    src/api/client/ebayApiClient.ts:131src/api/shared/location.ts:39src/auth/scopeUtils.ts:378src/scripts/interactiveSetup.ts:93

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

  • Warn
    No SSRF sinksguard1 occurrence

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

    src/utils/http.ts:380

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

  • Warn
    No known-vulnerable dependencies3 of 420 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-mrhx-c7xc-m3w5[email protected] — GHSA-27r3-jxmh-p828[email protected] — GHSA-333x-w4r6-6crp[email protected] — GHSA-w74x-v6f9-j3xg

    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.

  • 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
    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 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.

  • 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
    Network Exposurebinds 0.0.0.0

    Binding 0.0.0.0 or exposing debug inspectors widens the attack surface.

    Fix: Bind to 127.0.0.1 by default; never ship open debug endpoints.

  • Pass
    Execution Sandboxingcontainerized

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

  • 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)

eBay MCPebay_get_kyclist_ebay_toolsCommerce ServicesOrder Fulfillmentenable_ebay_toolsAccount ManagementFinance & Paymentsdisable_ebay_toolsebay_get_sales_taxAnalytics & Reportsebay_get_privilegesebay_get_rate_tableInventory Managementebay_get_charity_orgebay_get_rate_tablesebay_get_sales_taxesReputation & Feedbackebay_delete_sales_taxebay_get_charity_orgsebay_get_item_detailsebay_get_subscriptionMarketing & Promotionsebay_find_active_itemsebay_get_custom_policyebay_get_return_policyebay_opt_in_to_programebay_get_payment_policyebay_get_traffic_reportebay_opt_out_of_programebay_find_eligible_itemsebay_get_custom_policiesebay_get_payout_settingsebay_get_return_policiesebay_create_custom_policyebay_create_return_policyebay_delete_return_policyebay_get_payment_policiesebay_get_payments_programebay_get_user_preferencesebay_set_user_preferencesebay_update_custom_policyebay_update_return_policyebay_create_payment_policyebay_delete_payment_policyebay_get_opted_in_programsebay_update_payment_policyebay_get_fulfillment_policyebay_get_notification_configebay_get_fulfillment_policiesebay_update_combined_paymentsebay_update_payout_percentageebay_create_fulfillment_policyebay_delete_fulfillment_policyebay_get_return_policy_by_nameebay_update_fulfillment_policyebay_create_flat_shipping_rulesebay_get_payment_policy_by_nameebay_update_flat_shipping_rulesebay_update_notification_configebay_create_or_replace_sales_taxebay_get_advertising_eligibilityebay_get_combined_shipping_rulesebay_get_customer_service_metricebay_get_notification_destinationebay_get_seller_standards_profileebay_get_notification_destinationsebay_find_seller_standards_profilesebay_get_fulfillment_policy_by_nameebay_create_notification_destinationebay_delete_notification_destinationebay_get_payments_program_onboardingebay_send_offer_to_interested_buyersebay_update_notification_destinationebay_update_rate_table_shipping_costebay_bulk_create_or_replace_sales_taxebay_create_calculated_shipping_rulesebay_create_promotional_shipping_ruleebay_update_calculated_shipping_rulesebay_update_promotional_shipping_rule