MCPBridge Server

Spawn an actor from an asset path at a given location/rotation/scale. Returns validation results by default.

Duplicate an existing actor with an optional offset. Returns validation results by default.

Delete actors by name or name pattern (supports * and ? wildcards).

Change an actor's location, rotation, scale, mesh, or visibility. Returns validation results by default.

Move actors into World Outliner folders.

Snap one actor to another actor's named socket.

Spawn multiple actors in one call. Each spawn definition uses the same format as actor_spawn.

Check actors for gaps, overlaps, and alignment issues.

Add a member variable to a Blueprint, then compile and save.

Remove a member variable from a Blueprint, then compile and save.

Set a member variable's default value, then compile and save.

Remove a user function graph by name, then compile and save.

Create an event dispatcher (multicast delegate) with an optional parameter signature, then compile and save.

Remove an event dispatcher by name, then compile and save.

Implement a Blueprint Interface on a Blueprint, then compile and save.

Remove an interface implementation (deletes its generated function graphs), then compile and save.

Remove a component (SCS node) from a Blueprint; children re-parent to the removed node's parent. Compiles and saves.

Rename a component (SCS node) on a Blueprint, then compile and save.

Delete a node by GUID (links broken first), then compile and save.

Move a node to a new graph position, then compile and save.

Enable or disable a node by GUID, then compile and save.

Break all links on a single pin of a node, then compile and save.

List Blueprint assets with optional filtering by path, name, and parent class.

Get detailed Blueprint structure: components, variables, functions, event graphs, parent chain.

Create a new Blueprint class with optional components and variables.

Compile a Blueprint and return success/failure with error details. Success means the compile ran, check 'compiled' and 'had_errors' for actual result.

Generate a human-readable text summary of a Blueprint's structure, variables, and components.

Set scalar/vector/texture parameters on an existing material instance, then save.

Replace an existing DataTable's rows from DataTable JSON, then save. Returns the resulting row names.

List all background jobs started in this editor session, newest first.

Cancel a running background job (terminates its subprocess).

Spawn a PostProcessVolume with full settings control. Supports bloom, exposure, color grading, DOF, chromatic aberration, grain, vignette, motion blur, SSR, lens flare, and more.

Modify an existing PostProcessVolume's settings. Settings merge with existing values.

Apply a named post-processing preset. Creates or updates a PP volume. Presets: horror, cyberpunk, noir, dream, underwater, surveillance, vhs_glitch, damage, drunk, frozen, nuclear, sepia, cinematic, neon, thermal.

Create a CameraShake Blueprint asset with oscillation parameters. Shake presets: explosion, hit, earthquake, gunfire, footstep, ambient, electric_shock, glitch_shake. Or set individual rot_pitch/yaw/roll_amp/freq, loc_x/y/z_amp/freq, fov_amp/freq values.

Play a camera shake during PIE. Requires PIE to be running.

Spawn a CameraShakeSourceActor in the level. Emits shake within inner/outer radius during PIE.

Spawn a C++ ShakeTriggerActor: plays camera shake when the player overlaps its trigger box during PIE. Python builds, C++ executes -- the reliable pattern.

Toggle rendering features via console commands. Commands: freeze_rendering, show_fps, screen_percentage, temporal_aa, fxaa, motion_blur, bloom, eye_adaptation, tonemapper, ssr, ao, dof, aa_quality, shadow_quality, view_distance_quality, post_process_quality.

Remove action or axis mappings. Omit 'key' to remove every key bound to the name.

Create a BlackboardData asset with typed keys (Bool, Int, Float, String, Name, Vector, Rotator, Object, Class).

Rebuild navigation data in the loaded level (RebuildNavigation console command).

End the current PIE session.

Search the cached project intelligence index. Use this before editing to find existing assets, Blueprint structures, dependencies, and patterns.

List actors in the current level with optional filters. Returns name, class, folder, and optionally transforms and components.

Save the current level and optionally all dirty assets.

Return the World Outliner folder tree structure with actor counts per folder.

List materials in the project with optional filtering by path, name, and type.

Get detailed information about a material: parameters, textures, parent chain.

Create a new material or material instance. Provide parent and type 'instance' for material instances.

Apply a material to an actor's mesh component. Returns validation by default.

Undo the last N operations using UE4's transaction system.

Redo previously undone operations.

Show operation history with timestamps and parameters.

Create a named save point (level save + metadata snapshot).

Restore to a named checkpoint by undoing operations since it was created.

Execute multiple tool calls in a single request with shared validation.

Return current UE project name, engine version, project path, content directory, and loaded level.

List assets with optional filters. Returns asset paths, types, and names.

Return detailed info for a single asset: type, bounds, material slots, LOD count.

Diagnose asset loads, Blueprint generated classes, dependencies, referencers, and script class availability.

Save only the explicit asset paths passed in. Safer than project-wide save-all.

Enable one or more plugins in the current .uproject and report whether an editor restart is required.

Inspect Unreal input action and axis mappings. Use this to validate bindings like PF_Pause to Escape when physical key injection is unavailable.

Create a centered cinematic title-card Widget Blueprint with styled text, background treatment, and FadeIn/FadeOut animation specs.

Create a broadcast-style lower-third Widget Blueprint with styled title/subtitle text and FadeIn/FadeOut animation specs.

Ping the UE4 Python listener. Returns connection status, engine version, and project info.

Execute arbitrary Python code inside the UE4 editor. Has full access to the unreal module. Use for prototyping or operations not covered by dedicated tools.