Module event 

Proxy event types and the event sink trait.

ProxyEvent is the single event enum flowing through the event bus. EventSink is the trait sinks implement to consume events.

Both live in mcpr-core so any crate can:

• Emit events (proxy engine)
• Consume events (sinks: stderr, sqlite, cloud, prometheus, etc.)

Structs

HeartbeatEvent

Periodic health snapshot.

NoopSink

A no-op sink that discards all events. Used when no sinks are configured.

RequestEvent

An MCP request that flowed through the proxy.

SchemaCaptureEvent

Captured MCP schema discovery response, emitted BEFORE proxy rewrite.

SchemaStaleEvent

Server indicated its schema changed (e.g., notifications/tools/list_changed).

SessionEndEvent

Session closed (clean transport disconnect).

SessionStartEvent

MCP session established via initialize handshake.

Enums

ProxyEvent

All events flowing through the event bus.

Traits

EventSink

A sink that consumes proxy events from the event bus.