n8n MCP Server (sonnd08/n8n-mcp) is an MCP server listed on the M8ven Trust Index. It scores 51 out of 100, grade D. It declares 14 tools. No publisher has claimed this listing.

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D
Caution
51/100

n8n MCP Server

Provides AI assistants with direct access to the n8n automation platform to manage and execute workflows, variables, and credentials. It features 18 integrated tools that allow for seamless automation management via the Model Context Protocol.

→ sonnd08/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

sonnd08

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
⚠️
Known vulnerabilities in dependencies: 14 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
🔐
You'll be asked for 1 credential: N8N_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes14 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

self_test

Test basic server functionality and n8n API connectivity

list_workflows

List all workflows in the n8n instance

get_workflow

Get detailed information about a specific workflow by ID

list_executions

List workflow executions with optional filtering

execute_workflow

Execute a workflow manually with optional input data

get_execution

Get detailed information about a specific execution by ID

create_workflow

Create a new workflow in n8n

update_workflow

Update an existing workflow

delete_workflow

Delete an existing workflow

activate_workflow

Activate a workflow

deactivate_workflow

Deactivate a workflow

list_credentials

List all credentials in the n8n instance

create_credential

Create a new credential

list_nodes

List all available node types that n8n currently supports

// known CVEs in dependencies14 high5 medium11 low

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

high@modelcontextprotocol/sdk@1.0.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highaxios@1.7.7GHSA-35jp-ww65-95wh

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

highaxios@1.7.7GHSA-3g43-6gmg-66jw

axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge

highaxios@1.7.7GHSA-43fc-jf86-j433

Axios is Vulnerable to Denial of Service via __proto__ Key in mergeConfig

highaxios@1.7.7GHSA-4hjh-wcwx-xvwj

Axios is vulnerable to DoS attack through lack of data size check

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.
configMCP_PORTOr set different port: =3002 node index.js
🔐 secretN8N_API_KEY=your-api-key-here
configN8N_BASE_URL=http://localhost:5678
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

14/14 tools missing one or more hints — self_test (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_workflows (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_workflow (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +11 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

11/14 tools referenced in tests (79%)

Write tests that reference each tool by name so every tool has at least one test.

Production dependencies are patched

0 critical, 14 high severity in production deps — @modelcontextprotocol/sdk@1.0.0 (high), axios@1.7.7 (high)

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

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 4 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: 260d4f80b101ebcfc17233148f75af14647c8db9
code hash: 97ec21aff723688e5239ec984d27c6d5c2debfd3b829d8ced55bf66501328f13
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