Backend health plus, when a token is stored, the current user and account summary. Safe to call unauthenticated — it reports authenticated: false with a login hint rather than erroring.

List every broker account the caller's token is scoped to. Breadth is decided server-side by the token (a member sees their own; a manager token sees all it owns). Optional is_active filter and pagination.

List managed trading profiles (maps to /users/trading-profiles). A dedicated enterprise "clients" endpoint is a documented backend gap; for full breadth today use sigmavue_accounts_list.

List trade-journal entries, newest first. Optional symbol and entry_type filters plus pagination.

Current open positions plus a rollup summary. Optional account_id and position status_filter selectors.

Place an order — fail-closed. Mirrors the CLI exactly: live execution is disabled (pass sim=true to route to the active demo account), and the operator kill-switch + backend circuit breaker are re-checked on every call BEFORE any network write. When the kill-switch is engaged the tool refuses with blocked: true and places nothing.

List copy-trading groups. Optional active and environment filters.

Create a copy-trading group with a leader account and optional followers. Adding followers to an EXISTING group is intentionally not exposed over MCP (honest-disabled in the capability layer — needs an atomic server endpoint).