VRChat MCP OSC

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set_avatar_parameter

Modify avatar behavior in VRChat by setting parameters such as expressions, animations, or triggers using the Model Context Protocol for precise control.

Instructions

Set a parameter on the current avatar.

Input Schema

Name	Required	Description	Default
`parameter_name`	Yes	Name of the parameter to set
`value`	Yes	Value to set

Input Schema (JSON Schema)

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false,
  "properties": {
    "parameter_name": {
      "description": "Name of the parameter to set",
      "type": "string"
    },
    "value": {
      "description": "Value to set",
      "type": [
        "number",
        "boolean",
        "string"
      ]
    }
  },
  "required": [
    "parameter_name",
    "value"
  ],
  "type": "object"
}

Install Server

HTTP connection URL

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