Systeme.io API integration with managed OAuth. Manage contacts, contact tags, contact custom fields, tags, course enrolments, community memberships, and subscriptions. Use this skill when users want to manage Systeme.io contacts, enroll students in courses, manage community memberships, or handle subscriptions. For other third party apps, use the api-gateway skill (https://clawhub.ai/byungkyu/api-gateway). Requires network access and valid Maton API key. Calls run through the `maton` CLI with OAuth login, or over raw HTTP with a Maton API key where the CLI cannot be installed. The endpoints documented here are the intended surface, not a technical limit — the `maton api` passthrough can reach others the connection permits. Default to read and list calls, and confirm every write or new connection with the user.
Say once, where the passthrough is documented, that the gateway forwards arbitrary paths and methods and that the documented resources are a convention this skill holds itself to rather than an enforced limit - the access-scope bullet no longer reads as a contradiction of it. Declares contact custom fields, and replaces the generic high-impact list with Systeme.io's own, including that tags trigger campaigns and that course or community removal revokes paid access.