A connector is the type of integration; a connector-binding is the concrete instance with credentials and target. Connectors are contributed by biomes and addressed as XemaObjectKind.Connector; bindings are addressed as XemaObjectKind.ConnectorBinding. Inbound webhooks always enter through connector-gateway-api; outbound calls go through the gateway, using the adapter surface in @xemahq/biome-sdk and the contracts in @xemahq/contracts/connector. A connector binding is what a workflow or agent names when it needs to talk to an external service on behalf of an org. See the Capabilities page for the end-to-end connector capability flow.