Module hello

Modules§

feature: Capability feature bits advertised in OpVersions::features. Each constant names one managed sub-feature a server serves beyond the base surface, so a binary client feature-detects it (before attempting the op) the way the HTTP surface reads the boolean flags on Capabilities. Additive and pinned cross-repo: a new bit is set by a newer server and ignored by an older client (which simply does not light up that capability).

BackendAnnounce
BackendDescriptor: One observed backend resource and its structured, secret-free capabilities.
BackendImplementation
BackendLimits
BackendReadiness
BackendReadinessReason
FilterAnnounce: The consumer-filter evaluation a server serves. A client refuses to run a filter under another evaluator version or with a codec the server does not list, so a version gap fails before the first page instead of filtering differently.
HelloReply: Body of the AGDX_HELLO probe reply: the wire op versions the server (and its managed backend) accepts, mirroring the HTTP capabilities versions block. A pinned wire shape. Pre-versioned servers answer the probe with an empty body, which a client treats as “no versions advertised”, never an error.
MaintenanceCapabilities
MaterializationCapability
OpVersions: The wire op versions a server accepts, one per surface, plus the capability feature bits it advertises. A pinned wire shape, mirrored by the HTTP capabilities versions block.
QueryCapabilities
SchemaCapabilities