mcp-server-systemeio (snzeeee/mcp-server-systemeio) is an MCP server listed on the M8ven Trust Index. It scores 62 out of 100, grade C. It declares 18 tools. No publisher has claimed this listing.

C
Caution
62/100

mcp-server-systemeio

Enables Claude to manage Systeme.io accounts, including contacts, tags, courses, and subscriptions, through natural language.

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

Code 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

snzeeee

Source: Glama

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 →

Install from

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: 3 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: SYSTEMEIO_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// tools this server exposes18 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.

list_contacts

List contacts in your Systeme.io account. Filter by email, tags, bounced/unsubscribed status, or registration date. Returns paginated results.

get_contact

Get full details of a specific contact by their ID, including email, locale, custom fields, tags, and registration info.

create_contact

Create a new contact in Systeme.io with an email address, optional locale, and custom fields. This can trigger automations (e.g., enrolling in a course or campaign).

update_contact

Update an existing contact's locale or custom fields. Uses merge-patch: only specified fields are changed.

delete_contact

Delete a contact from Systeme.io. Note: actual deletion may take several days for security reasons.

list_tags

List all tags in your Systeme.io account. Tags are used to segment and organize your contacts.

create_tag

Create a new tag in Systeme.io. Tags help organize and segment contacts for campaigns and automations.

update_tag

Rename an existing tag.

delete_tag

Delete a tag from Systeme.io. This removes the tag from all contacts.

add_tag_to_contact

Assign a tag to a contact. This can trigger automations in Systeme.io (e.g., adding to a campaign, enrolling in a course).

remove_tag_from_contact

Remove a tag from a contact.

list_contact_fields

List all custom contact fields defined in your Systeme.io account (e.g., first_name, country, phone_number, and any custom fields you created).

list_courses

List all online courses in your Systeme.io school. Filter by active status or search by name.

enroll_contact_in_course

Enroll a contact in an online course. You can grant full access, partial access (specific modules), or dripping content access.

list_enrollments

List course enrollments. See which contacts are enrolled in which courses.

remove_enrollment

Remove a contact's enrollment from a course.

list_subscriptions

List payment subscriptions for a specific contact. Shows active recurring payments.

cancel_subscription

Cancel a payment subscription. The subscription will end at the end of the current billing cycle.

// known CVEs in dependencies3 high

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

high@modelcontextprotocol/sdk@1.12.1GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.1GHSA-w48q-cv73-mx4w

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

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.
🔐 secretSYSTEMEIO_API_KEY"": "your-api-key-here"
// 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

18/18 tools missing one or more hints — list_contacts (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_contact (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_contact (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +15 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.

Tests exist

No test files found

Add tests that exercise each declared tool.

Production dependencies are patched

0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.12.1 (high), @modelcontextprotocol/sdk@1.12.1 (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.
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commit: bd1ed1a89d241f670800559acfe1157a74784ac2
code hash: 093a5a512dcc8c70bc90bd6745c2ecf05579ce4d9e679eb7a7329e00e55ec656
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