n8n-mcp (lucas-denzer/n8n-mcp) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: we have no way to read this server ourselves. No publisher has claimed this listing.
A Model Context Protocol (MCP) server that provides AI assistants with comprehensive access to n8n node documentation, properties, and operations, enabling them to build and validate workflows.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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lucas-denzer
Source: Glama
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
form-data: CRLF injection in form-data via unescaped multipart field names and filenames
axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`
axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge
Axios: Header Injection via Prototype Pollution
Allocation of Resources Without Limits or Throttling in Axios
AUTH_RATE_LIMIT_MAXAUTH_RATE_LIMIT_WINDOWAUTH_TOKENAUTH_TOKEN_FILEAWS_EXECUTION_ENVAZURE_FUNCTIONS_ENVIRONMENTBASE_URLCORS_ORIGINCOVERAGE_DIRCOVERAGE_REPORTERDISABLED_TOOLSDISABLE_CONSOLE_OUTPUTDISABLE_TELEMETRYENABLE_MULTI_TENANTFEATURE_TEST_COVERAGEFLY_APP_NAMEGITHUB_ACTIONSGITHUB_REFGITHUB_REPOSITORYGITHUB_RUN_IDGITHUB_RUN_NUMBERGITHUB_SHAGIT_COMMITGOOGLE_CLOUD_PROJECTHEROKU_APP_NAMEHOSTIS_CONTAINERIS_DOCKERKUBERNETES_SERVICE_HOSTLOG_LEVELMCP_AUTH_TOKENMCP_MODEMCP_PORTMCP_URLMULTI_TENANT_ALLOW_CONCURRENT_SESSIONSMULTI_TENANT_SESSION_STRATEGYN8N_API_KEYThese tools require N8N_API_URL and in your configuration.N8N_API_URLThese tools require and N8N_API_KEY in your configuration.N8N_CUSTOM_PATHN8N_MCP_CONFIG_VOLUMEN8N_MCP_MAX_SESSIONSN8N_MCP_TELEMETRY_DISABLEDN8N_MCP_USER_IDN8N_MODEN8N_MODULES_PATHN8N_SKILLS_SOURCEPUBLIC_URLRENDERSESSION_TIMEOUT_MINUTESSKIP_WORKFLOW_VALIDATIONTELEMETRY_DISABLEDTEST_MAX_WORKERSTRUST_PROXYUSE_FIXED_HTTPPORTSUPABASE_ANON_KEYSUPABASE_SERVICE_ROLE_KEYSUPABASE_URLAll four hints declared on every tool
19/24 tools missing one or more hints — n8n_create_workflow (missing: idempotentHint); n8n_get_workflow (missing: destructiveHint); n8n_delete_workflow (missing: idempotentHint), +16 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool test coverage
Only 1/24 tools referenced in tests (4%)
Write tests that reference each tool by name so every tool has at least one test.
Shell command execution
7 child_process calls — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Secrets stay with their owner
2 secret/sensitive values flow into network calls (MCP_AUTH_TOKEN → dynamic, AUTH_TOKEN → dynamic)
Audit where credentials are sent. A NOTION_TOKEN should only reach api.notion.com — never a third-party host.
Secrets not logged
3 secret values sent to console.log
Redact or omit secret values from log output.
Production dependencies are patched
0 critical, 1 high severity in production deps — form-data@4.0.5 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
10 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
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