MCP Tools — Group Lifecycle

Group creation, subgroups, and lifecycle transitions.

7 tools in this registry. Every tool is callable over the MCP endpoint (/api/mcp); the badge on each shows which auth modes may invoke it. See Auth models and the MCP overview.

rivr.groups.renew_membership

Renew the actor's own membership window in a group, reusing prior password-grant proof when present.

Parameters

rivr.groups.request_membership

Request membership in a group as the actor. Supports application answers, a join password, or an invite token depending on the group's join settings.

Parameters

rivr.groups.review_join_request

Approve or reject a pending group join request. The actor must be an admin of the group.

Parameters

rivr.groups.revoke_membership

Revoke a member's group membership. The actor must be a group admin, or the member revoking their own membership.

Parameters

rivr.groups.update_join_settings

Update a group's join workflow (joinType, discovery visibility, application questions, password/approval requirements). The actor must be a group admin. Sparse: only provided fields change.

Parameters

rivr.groups.update_membership_plans

Replace a group's paid membership plans. The actor must be a group admin. plans is the FULL list of plans (send every plan to keep, not just the changed one). Prices are whole US cents per cadence: amountMonthlyCents 1000 is $10.00 a month, amountYearlyCents 10000 is $100.00 a year; null on a cadence means no price on it. Every plan states its price in those fields, and a plan whose name or description mentions a price must carry it there. A plan's grantsGroupId names a subgroup its subscribers also join. Stripe prices are not created here: checkout prices each subscription when a member subscribes.

Parameters

rivr.groups.update_tab_visibility

Update per-tab visibility for a group's pages. The actor must be a group admin. tabVisibility maps tab keys to a visibility level (public | members | admin | hidden).

Parameters