Epsilon3 Realtime API
SocketIO and webhook realtime interface for integrating third-party systems with running Epsilon3 procedures. Four namespaces are published: commanding (/v1/commands/realtime), external data (/v1/external-data/items), notifications (/v1/notifications/realtime) and telemetry (/v1/telemetry/realtime). Webhook deliveries are signed with an Epsilon3-Signature header verified against a per-workspace webhook key. Realtime authentication requires a team-scoped API key.