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Flux-Point-Studios

Unreal Engine MCP Server

manage_networking

Configure Unreal Engine multiplayer networking by managing property replication, RPCs, authority, relevancy, and network prediction.

Instructions

Configure multiplayer: property replication, RPCs (Server/Client/Multicast), authority, relevancy, and network prediction.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
roleNoNet role.
actionYesNetworking action to perform
rpcTypeNoType of RPC.
dataTypeNoNetwork prediction data type.
dormancyNoNet dormancy mode.
reliableNoWhether the operation is reliable.
actorNameNoName of the actor.
conditionNoReplication condition.
nodeClassNoNode class path.
removeAllNoRemove all foliage instances.
parametersNoRPC function parameters.
propertiesNoPredicted properties.
replicatedNoWhether property should be replicated.
returnTypeNoRPC return type (usually void).
structNameNoName of struct for custom serialization.
netPriorityNoNetwork priority for bandwidth (default 1.0).
spatialBiasNoSpatial bias for replication graph.
functionNameNoName of the function.
propertyNameNoName of the property.
usePushModelNoUse push-model replication.
blueprintPathNoBlueprint asset path.
maxClientRateNoMax client rate.
predictionKeyNoPrediction key identifier.
propertyNamesNoProperties for push model.
repNotifyFuncNoRepNotify function name.
smoothingRateNoSmoothing rate for corrections.
alwaysRelevantNoAlways relevant to all clients.
ownerActorNameNoName of owner actor (null to clear).
withValidationNoEnable RPC validation.
netLoadOnClientNoNet load on client for replication graph.
spatiallyLoadedNoSpatially loaded for replication graph.
useNetSerializeNoUse custom NetSerialize.
enablePredictionNoEnable client-side prediction.
isAutonomousProxyNoConfigure as autonomous proxy.
replicateMovementNoReplicate movement.
replicationPolicyNoReplication policy for replication graph.
netUpdateFrequencyNoHow often actor replicates (Hz, default 100).
correctionThresholdNoServer correction threshold.
customSerializationNoUse custom serialization.
onlyRelevantToOwnerNoOnly relevant to owner.
predictionThresholdNoPrediction threshold for client prediction.
defaultSettingsClassNoDefault replication settings class.
netServerMaxTickRateNoServer max tick rate.
networkSmoothingModeNoMovement smoothing mode.
useOwnerNetRelevancyNoUse owner relevancy.
maxInternetClientRateNoMax internet client rate.
minNetUpdateFrequencyNoMinimum update frequency when idle (Hz, default 2).
netCullDistanceSquaredNoNetwork cull distance squared.
replicatedMovementModeNoReplicated movement mode.
validationFunctionNameNoName of validation function.
locationQuantizationLevelNoLocation quantization level.
networkNoSmoothUpdateDistanceNoNo smooth update distance.
networkMaxSmoothUpdateDistanceNoMax smooth update distance.
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations provide no safety profile (readOnlyHint=false, destructiveHint=false, idempotentHint=false), and the description adds no behavioral context such as side effects, permission requirements, or what changes are applied. 'Configure' implies mutation but gives no transparency into consequences or operational details.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, front-loaded sentence that lists key network areas without unnecessary words. It earns its place as a succinct overview, though its brevity is a drawback for other dimensions.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with 53 parameters, no output schema, and no helpful annotations, the one-sentence description is severely incomplete. It provides no sense of typical workflows, how to select the required action, or how parameters group into operations, leaving the agent without enough context to invoke the tool effectively.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with individual descriptions for all 53 parameters, so parameter semantics are already well-documented. The description only lists high-level topics and does not add mapping between parameters and actions, but that is not necessary given the schema's completeness.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses the specific verb 'Configure' and identifies the resource as 'multiplayer' with concrete sub-domains (property replication, RPCs, authority, relevancy, prediction). This clearly signals the tool's focus and distinguishes it from sibling manage_* tools that target other systems, though it doesn't explicitly contrast with alternatives.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The intended context is implied by the tool name and description—use for multiplayer/networking setup. However, there is no explicit when-to-use or when-not-to-use guidance, nor any mention of alternative tools for overlapping concerns like control_actor or manage_game_framework.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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