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.
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.
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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.
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_contactsList contacts in your Systeme.io account. Filter by email, tags, bounced/unsubscribed status, or registration date. Returns paginated results.
get_contactGet full details of a specific contact by their ID, including email, locale, custom fields, tags, and registration info.
create_contactCreate 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_contactUpdate an existing contact's locale or custom fields. Uses merge-patch: only specified fields are changed.
delete_contactDelete a contact from Systeme.io. Note: actual deletion may take several days for security reasons.
list_tagsList all tags in your Systeme.io account. Tags are used to segment and organize your contacts.
create_tagCreate a new tag in Systeme.io. Tags help organize and segment contacts for campaigns and automations.
update_tagRename an existing tag.
delete_tagDelete a tag from Systeme.io. This removes the tag from all contacts.
add_tag_to_contactAssign 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_contactRemove a tag from a contact.
list_contact_fieldsList all custom contact fields defined in your Systeme.io account (e.g., first_name, country, phone_number, and any custom fields you created).
list_coursesList all online courses in your Systeme.io school. Filter by active status or search by name.
enroll_contact_in_courseEnroll a contact in an online course. You can grant full access, partial access (specific modules), or dripping content access.
list_enrollmentsList course enrollments. See which contacts are enrolled in which courses.
remove_enrollmentRemove a contact's enrollment from a course.
list_subscriptionsList payment subscriptions for a specific contact. Shows active recurring payments.
cancel_subscriptionCancel a payment subscription. The subscription will end at the end of the current billing cycle.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
SYSTEMEIO_API_KEY"": "your-api-key-here"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.
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