n8n-builder (BenAttanasio/n8n-builder) is an MCP server listed on the M8ven Trust Index. It scores 73 out of 100, grade C. It declares 17 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
C
Caution
73/100

n8n-builder

MCP server that lets Claude Code build and run n8n workflows, scoped so it can only ever touch the ones it created.

→ BenAttanasio/n8n-builder· listed on github_repo_search

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.

How we verified

⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every pushwhy connect →

Who stands behind it

BenAttanasio

Source: github_repo_search

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

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Install from

GitHub

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
⚠️
Tool descriptions don’t match what handlers do
1 tool describes read intent but its handler mutates — n8n_import_from_file (line 25: writeFile()
✅
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.
// 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.
🔐 secretN8N_API_KEY
configN8N_BASE_URL
configN8N_PROJECT_NAME
configN8N_WORKFLOW_PREFIX
// 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

17/17 tools missing one or more hints — n8n_list_credentials (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); n8n_create_credential (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); n8n_delete_credential (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +14 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.

Descriptions match behaviour

1 tool describes read intent but its handler mutates — n8n_import_from_file (line 25: writeFile()

Rename the tool, rewrite the description, or move the side-effect into a separate clearly-named tool.

Tool inputs are validated

14/17 tool handlers declare input schemas (82%)

Declare an inputSchema with zod/joi/yup on every tool definition.

Tests exist

No test files found

Add tests that exercise each declared tool.

Tool description accuracy

n8n_import_from_file: description implies read-only but handler writes/deletes/executes

Update tool descriptions to accurately reflect all capabilities — especially write, delete, or execute operations.

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 6 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
[![M8ven Verified](https://m8ven.ai/badge/mcp/benattanasio/n8n-builder?variant=verified)](https://m8ven.ai/mcp/benattanasio/n8n-builder)
Shows verification status without the grade. Want the grade badge instead? Remove ?variant=verified from the URL.
commit: 2dc4ca0186934311b9dda23e578c1d5bdf12eba7
code hash: e11e04d0989b2b11f95afc9d2c1a8cc8aff7cf256a0ed1082e926124af33d6d9
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