n8n MCP Server (Nielsen642/n8n-mcp) is an MCP server listed on the M8ven Trust Index. It scores 61 out of 100, grade C. It declares 24 tools. No publisher has claimed this listing.

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C
Caution
61/100

n8n MCP Server

Enables AI assistants to access comprehensive n8n node documentation, properties, and operations for building workflow automations.

→ Nielsen642/n8n-mcp· listed on glama

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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Who stands behind it

Nielsen642

Source: Glama

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Install from

Glamanot scored here

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
🚨
Secret credentials may flow to a network call
2 flows detected: MCP_AUTH_TOKEN, AUTH_TOKEN. We can’t prove the destination matches the brand the credential belongs to.
🚨
Known vulnerabilities in dependencies: 2 critical, 13 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 4 credentials: AUTH_TOKEN, MCP_AUTH_TOKEN, N8N_MCP_LLM_API_KEY, OPENAI_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies2 critical13 high7 medium12 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalform-data@4.0.0GHSA-fjxv-7rqg-78g4

form-data uses unsafe random function in form-data for choosing boundary

criticalvitest@3.2.4GHSA-5xrq-8626-4rwp

When Vitest UI server is listening, arbitrary file can be read and executed

highform-data@4.0.0GHSA-hmw2-7cc7-3qxx

form-data: CRLF injection in form-data via unescaped multipart field names and filenames

high@faker-js/faker@9.9.0GHSA-qxc2-j82w-r537

Faker: helpers.fake exploitable into arbritary code execution

highaxios@1.15.0GHSA-35jp-ww65-95wh

axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configAUTH_RATE_LIMIT_MAX
configAUTH_RATE_LIMIT_WINDOW
🔐 secretAUTH_TOKEN
configAUTH_TOKEN_FILE
configCORS_ORIGIN
configCOVERAGE_DIR
configCOVERAGE_REPORTER
configDISABLED_TOOLS
configDISABLE_CONSOLE_OUTPUT
configENABLE_MULTI_TENANT
configFEATURE_TEST_COVERAGE
configGIT_COMMIT
configHOST
configIS_CONTAINER
configIS_DOCKER
configLOG_LEVEL
🔐 secretMCP_AUTH_TOKEN
configMCP_MODE
configMCP_PORT
configMULTI_TENANT_SESSION_STRATEGY
configN8N_API_URLThese tools require and N8N_API_KEY in your configuration.
🔐 secretN8N_MCP_LLM_API_KEY
configN8N_MCP_LLM_BASE_URL
configN8N_MCP_LLM_MODEL
configN8N_MCP_LLM_TIMEOUT
configN8N_MCP_MAX_SESSIONS
🔐 secretOPENAI_API_KEY
configSESSION_TIMEOUT_MINUTES
configSKIP_WORKFLOW_VALIDATION
configSQLJS_SAVE_INTERVAL_MS
configTEST_MAX_WORKERS
configTRUST_PROXY
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// quality suggestions

All 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.

Production dependencies are patched

1 critical, 1 high severity in production deps — form-data@4.0.0 (critical), form-data@4.0.0 (high)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

Dev dependencies

13 critical/high in dev-only deps (does not ship to users)

Upgrade dev dependencies when convenient.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 3 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
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commit: 3f808cd6768e3b5065f7b3873bfff678d13fe93a
code hash: e714b8bafc30411ea3e7fce27f6d636b9e0a3e29677a99e6ee588e64a6e8d613
view raw JSON →
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