Skip to main content
Glama
aadeshrao123

Unreal-MCP

by aadeshrao123

add_mapping_trigger

Add a trigger to an input mapping in an Input Mapping Context by specifying the context asset, mapping index, and trigger type.

Instructions

Add a trigger to a specific mapping in an Input Mapping Context.

Args: context_path: Path to the IMC asset mapping_index: Index of the mapping (from get_input_mapping_context) trigger_type: Trigger class name (e.g. "InputTriggerPressed") properties: Optional trigger properties

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
propertiesNo
context_pathYes
trigger_typeYes
mapping_indexYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations, the description bears full responsibility for behavioral disclosure. It states the mutation (adding a trigger) but does not mention side effects, permission requirements, error conditions (e.g., invalid mapping_index), or reversibility. This is minimal transparency.

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 very concise: one sentence plus a list of args. No redundant information, and the purpose is front-loaded. Every sentence is necessary.

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

Completeness4/5

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

The description is fairly complete given the existence of an output schema and the tool's straightforward nature. It explains all parameters clearly, but could mention error scenarios or dependencies (e.g., the IMC must already exist).

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

Parameters4/5

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

The description explains each parameter with context and an example (e.g., trigger_type: 'InputTriggerPressed'). Although schema coverage is 0%, the description compensates well, though the 'properties' parameter remains somewhat vague.

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

Purpose5/5

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

The description clearly states the action: 'Add a trigger to a specific mapping in an Input Mapping Context.' This distinguishes it from sibling tools like remove_mapping_trigger and add_key_mapping, making its purpose specific and unambiguous.

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 description implies usage by listing required parameters but provides no explicit guidance on when to use this tool over alternatives (e.g., add_key_mapping). No context about prerequisites or scenarios is given.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/aadeshrao123/Unreal-MCP'

If you have feedback or need assistance with the MCP directory API, please join our Discord server