Blueprint Members

Blueprint members are asset-owned definitions, not graph wiring. Use member tools for variables, functions, macros, dispatchers, custom events, and components.

Tool Summary

Tool	Purpose
blueprint.member.inspect	Inspect Blueprint-owned members.
blueprint.member.edit	Edit Blueprint-owned members.

blueprint.member.inspect

Parameters

Field	Required	Notes
assetPath	yes	Blueprint asset path.
memberKind	yes	variable, function, macro, dispatcher, event, customEvent, or component.
name	no	Exact member name filter.

Use this before editing members, and when deciding whether an operation belongs to member tools or graph tools.

blueprint.member.edit

Parameters

Field	Required	Notes
assetPath	yes	Blueprint asset path.
memberKind	yes	Same member kind set as inspect.
operation	yes	Operation within the member kind.
args	yes	Operation-specific arguments from schema.inspect.
dryRun	no	Validate without applying.
returnDiff	no	Include diff when supported.
returnDiagnostics	no	Defaults to true.
expectedRevision	no	Optimistic mutation guard when supported.

Call schema.inspect with domain: blueprint, tool: blueprint.member.edit, and operation: <memberKind>.<operation> before editing.

For inherited native Blueprint events/functions, use memberKind: "function" with operation: "override" instead of function.create. Override graphs are created from UE’s inherited function signature so native dispatch reaches the Blueprint implementation.

Boundary

Use member tools for Blueprint-owned definitions. Use graph tools only for graph placement, pins, links, node defaults, comments, and layout.