unreal-mcp-ue4

NPM · UNREAL-MCP-UE4 · SCANNED AUG 3

UE4.27 MCP server for controlling Unreal Editor sessions over Python Remote Execution.

Available components

+12 this week 56 56 Trust /100

Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →

Supply Chain Security87

No malware found by supply-chain analysis.Pass
Only part of the dependency tree could be resolved (96 of 100), so this covers what we could see, not the whole tree.Partial
No install/post-install scripts declared.Pass
Only part of the dependency tree could be resolved (96 of 100), so this covers what we could see, not the whole tree. View diagnostics → Partial

Provenance & Transparency45

Source repository is publicly reachable at the declared URL. View diagnostics → Pass
Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
Clear OSI-approved license (MIT).Pass
Actively maintained (last published 83 days ago).Pass
Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail

Schema Quality & AI Usability27

0% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Fail
AI-judged instruction clarity (poor).Fail
Tool/resource definitions use about 2266 tokens (~64/item across 35 items; 34 tools + 1 resources), lean.Pass
Usage-examples check failed: none of the tools include examples. See how to fix → Fail

Stability & Change Management0

Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified

Tool Coverage100

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
99% of tool parameters carry a description.Partial

Capabilities100

Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass

Unverified: 1 category

A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

npm · unreal-mcp-ue4

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

claude mcp add conaman-unreal-mcp-ue4 -- npx -y unreal-mcp-ue4

# add to Codex CLI

codex mcp add conaman-unreal-mcp-ue4 -- npx -y unreal-mcp-ue4

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "conaman-unreal-mcp-ue4": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "unreal-mcp-ue4"
      ],
      "enabled": true
    }
  }
}

# add to OpenClaw

openclaw mcp add conaman-unreal-mcp-ue4 --command npx --arg -y --arg unreal-mcp-ue4

# ~/.hermes/config.yaml

mcp_servers:
  conaman-unreal-mcp-ue4:
    command: "npx"
    args: ["-y", "unreal-mcp-ue4"]

// mcp.json

{
  "mcpServers": {
    "conaman-unreal-mcp-ue4": {
      "command": "npx",
      "args": [
        "-y",
        "unreal-mcp-ue4"
      ]
    }
  }
}

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

2 Aug 26 +8
- Install scripts: pass → unverified ▼ security
- Provenance: fail → unverified ▼ security
- Known CVEs: unverified → partial ▲ security
- Maintenance: pass → unverified ▼ functional
- License: pass → unverified ▼ functional
- Dependency health: unverified → partial ▲ functional
- Licence: MIT functional
1 Aug 26 −11
- Known CVEs: partial → unverified ▼ security
- Dependency health: partial → unverified ▼ functional
31 Jul 26 +24
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
30 Jul 26 +10
- Provenance: unverified → fail ▼ security
- Malware scan: pass → unverified ▼ security
- Install scripts: unverified → pass ▲ security
- Security disclosure: unverified → fail ▼ functional
- Dependency health: partial → unverified ▼ functional
- Tool coverage: unverified → 100 ▲ functional
- License: unverified → pass ▲ functional
- Schema quality: unverified → 0 ▲ functional
- Maintenance: unverified → pass ▲ functional
- Licence: MIT functional
29 Jul 26 −19
- Tool coverage: 100 → unverified ▼ functional
- Schema quality: 0 → unverified ▼ functional
- Security disclosure: fail → unverified ▼ functional
- Dependency health: unverified → partial ▲ functional
27 Jul 26 44

First indexed and scored.

Show 3 earlier entries Hide earlier entries

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Analysed npm/[email protected]

Provenance none

Ecosystem: npm · Outcome: none

Dependencies 96 packages

96 packages in the resolved dependency tree · 95 deprecated · 29 stale.

The dependency tree was only partially resolved, so these counts may be incomplete.

MCP tools — 34 exposed · ~2,262 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens

editor_create_object ~279

Create a new object/actor in the world Example output: {'success': true, 'actor_name': 'StaticMeshActor_1', 'actor_label': 'MyCube', 'class': 'StaticMeshActor', 'location': {'x': 100.0, 'y': 200.0, 'z': 0.0}, 'rotation': {'pitch': 0.0, 'yaw': 45.0, 'roll': 0.0}, 'scale': {'x': 1.0, 'y': 1.0, 'z': 1.0}} Returns created actor details with final transform values.

Input Output Examples

Name	Type	Req	Description
location	object	—	World position coordinates
object_class	string	yes	Unreal class name (e.g., 'StaticMeshActor', 'DirectionalLight')
object_name	string	yes	Name/label for the created object
properties	object	—	Additional actor properties. For StaticMeshActor: use 'StaticMesh' for mesh path, 'Material' for single material path, or 'Materials' for array of material paths. Example: {"StaticMesh": "/Game/Meshe…
rotation	object	—	Rotation in degrees
scale	object	—	Scale multipliers

No output schema declared.

No examples provided.

editor_delete_object ~114

Delete an object/actor from the world Example output: {'success': true, 'message': 'Successfully deleted actor: MyCube', 'deleted_actor': {'actor_name': 'StaticMeshActor_1', 'actor_label': 'MyCube', 'class': 'StaticMeshActor', 'location': {'x': 100.0, 'y': 200.0, 'z': 0.0}}} Returns deletion confirmation with details of the deleted actor.

Input Output Examples

Name	Type	Req	Description
actor_names	string	yes	—

No output schema declared.

No examples provided.

editor_update_object ~277

Update an existing object/actor in the world Example output: {'success': true, 'actor_name': 'StaticMeshActor_1', 'actor_label': 'UpdatedCube', 'class': 'StaticMeshActor', 'location': {'x': 150.0, 'y': 200.0, 'z': 50.0}, 'rotation': {'pitch': 0.0, 'yaw': 90.0, 'roll': 0.0}, 'scale': {'x': 2.0, 'y': 2.0, 'z': 2.0}} Returns updated actor details with new transform values.

Input Output Examples

Name	Type	Req	Description
actor_name	string	yes	Name or label of the actor to update
location	object	—	New world position coordinates
new_name	string	—	New name/label for the actor
properties	object	—	Additional actor properties to update. For StaticMeshActor: use 'StaticMesh' for mesh path, 'Material' for single material path, or 'Materials' for array of material paths. Example: {"StaticMesh": "/…
rotation	object	—	New rotation in degrees
scale	object	—	New scale multipliers

No output schema declared.

No examples provided.

get_unreal_engine_path ~24

Get the active Unreal Engine root path from the connected editor session

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

get_unreal_project_path ~24

Get the active Unreal project file path from the connected editor session

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

get_unreal_version ~23

Get the active Unreal Engine version string from the connected editor session

Input Output Examples

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

manage_actor ~53

Actor tool namespace for listing, searching, spawning, deleting, transforming, and inspecting level actors.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_actor
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_animation_physics ~58

Animation-and-physics tool namespace for physics Blueprint spawning, Blueprint physics settings, and Blueprint compilation actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_animation_physics
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_asset ~52

Asset tool namespace for list, search, info, references, export, and validation actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_asset
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_audio ~52

Audio tool namespace for importing audio files, searching audio assets, and inspecting their asset metadata.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_audio
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_behavior_tree ~51

Behavior-tree tool namespace for creating, searching, and inspecting BehaviorTree assets.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_behavior_tree
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_blueprint ~54

Blueprint tool namespace for Blueprint creation, component editing, compilation, and basic Blueprint summary actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_blueprint
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_data ~53

Data tool namespace for searching data assets, creating common data containers, and inspecting their asset metadata.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_data
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_editor ~59

Editor tool namespace for Python execution, console commands, project inspection, map inspection, PIE control, screenshots, and camera control.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_editor
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_effect ~55

Effects tool namespace for spawning debug-shape actors, assigning materials, tinting them, and deleting them.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_effect
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_environment ~53

Environment-building tool namespace for preset town, arch, staircase, pyramid, and maze generation actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_environment
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_gas ~52

GAS tool namespace for searching gameplay-ability-related assets and inspecting their asset metadata.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_gas
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_geometry ~50

Geometry tool namespace for wall, arch, staircase, and pyramid preset construction actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_geometry
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_input ~45

Input tool namespace for creating classic UE4 input mappings.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_input
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_inspection ~52

Inspection tool namespace for asset, actor, map, and basic Blueprint summary actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_inspection
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_level ~55

Level tool namespace for map inspection, actor listing, world outliner inspection, and preset structure creation actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_level
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_level_structure ~60

Level-structure tool namespace for preset town, house, mansion, tower, wall, bridge, and fortress construction actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_level_structure
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_lighting ~54

Lighting tool namespace for spawning common light actors, transforming them, and inspecting level lighting state.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_lighting
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_material ~57

Material tool namespace for listing materials, applying them to actors or Blueprints, and tinting them with material instances.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_material
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_navigation ~49

Navigation tool namespace for spawning navigation volumes and proxies plus basic map inspection actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_navigation
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_sequence ~48

Sequence tool namespace for creating, searching, and inspecting LevelSequence assets.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_sequence
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_skeleton ~52

Skeleton tool namespace for searching Skeleton and SkeletalMesh assets and inspecting their metadata.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_skeleton
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_source_control ~51

Source-control tool namespace for provider inspection and file or package source-control operations.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_source_control
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_splines ~57

Spline tool namespace for spawning a spline-host actor or Blueprint and then transforming or deleting it.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_splines
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_system ~45

System tool namespace for console commands and asset validation actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_system
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_texture ~54

Texture tool namespace for searching texture assets, importing image files as textures, and reading their asset metadata.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_texture
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_tools ~62

Tool-namespace registry for listing registered tool namespaces and describing supported actions. Use this as the discovery entry point for the namespace-first MCP surface.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_tools
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_volumes ~51

Volume tool namespace for spawning common engine volumes and applying delete or transform actions.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_volumes
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

manage_widget ~87

Widget tool namespace for UMG Blueprint creation, widget-tree edits, and viewport spawning actions. Use add_child_widget for typical nested layout work under an existing root such as CanvasPanel_0; add_widget without parent_widget_name is only for assigning a new root widget.

Input Output Examples

Name	Type	Req	Description
action	string	yes	Action to execute inside tool namespace manage_widget
params	object	—	Optional action parameter object

No output schema declared.

No examples provided.

On this page

Handy links

Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

27 Jul 3 Aug

Day	Score
27 Jul	44
28 Jul	44
29 Jul	25
30 Jul	35
31 Jul	59
1 Aug	48
2 Aug	56
3 Aug	56