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unbind_event_from_dispatcher

Removes an existing event binding from a dispatcher in a Blueprint. Specify the Blueprint and dispatcher name to add an unbind node, stopping events from triggering bound functions.

Instructions

Add an 'Unbind Event from [Dispatcher]' node.

Args: blueprint_name: Blueprint name dispatcher_name: Dispatcher to unbind from node_position: Optional graph position

KB: see knowledge_base/02_BLUEPRINT_COMMUNICATION.md#overview Example: unbind_event_from_dispatcher(blueprint_name="/Game/MCP_Test/BP_Example", dispatcher_name="ExampleName")

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
node_positionNo
blueprint_nameYes
dispatcher_nameYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3.2/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden. It simply states that a node is added, but does not disclose effects on the blueprint graph, whether existing event bindings are removed, error behavior, or any mutating side effects. The agent is left without behavioral context.

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 appropriately short and well-structured: a one-sentence action statement, then a compact Args list, and a concrete example. No wasted words or filler.

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 graph-mutating blueprint tool with no annotations and minimal usage guidance, the description is incomplete. It lacks context about event-binding workflows, prerequisites (e.g., whether a bind event must already exist), and what the output schema returns. The KB reference helps but is not a substitute for inline context.

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 description coverage is 0%, so the description must compensate. The Args list adds brief meaning for each parameter: 'Blueprint name', 'Dispatcher to unbind from', and 'Optional graph position'. This goes slightly beyond the schema titles, but lacks detail like coordinate format for node_position or how blueprint_name is resolved.

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 explicitly states 'Add an "Unbind Event from [Dispatcher]" node', which is a specific verb (Add) and resource (the named blueprint node). This clearly distinguishes it from sibling tools like bind_event_to_dispatcher or call_event_dispatcher by naming the exact node type being added.

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

Usage Guidelines2/5

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

There is no guidance on when to use this tool versus alternatives such as bind_event_to_dispatcher or call_event_dispatcher. The description only provides a KB pointer and an example, but no explicit conditions, prerequisites, or exclusions.

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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