{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/InitToolRule",
  "title": "InitToolRule",
  "properties": {
    "tool_name": {
      "type": "string",
      "title": "Tool Name",
      "description": "The name of the tool. Must exist in the database for the user's organization."
    },
    "type": {
      "type": "string",
      "const": "run_first",
      "title": "Type",
      "default": "run_first"
    },
    "prompt_template": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Prompt Template",
      "description": "Optional template string (ignored). Rendering uses fast built-in formatting for performance."
    },
    "args": {
      "anyOf": [
        {
          "additionalProperties": true,
          "type": "object"
        },
        {
          "type": "null"
        }
      ],
      "title": "Args",
      "description": "Optional prefilled arguments for this tool. When present, these values will override any LLM-provided arguments with the same keys during invocation. Keys must match the tool's parameter names and values must satisfy the tool's JSON schema. Supports partial prefill; non-overlapping parameters are left to the model."
    }
  },
  "additionalProperties": false,
  "type": "object",
  "required": [
    "tool_name"
  ],
  "description": "Represents the initial tool rule configuration."
}