Letta · Schema

ToolCallNode

Typed child override for prefilled arguments. When used in a ChildToolRule, if this child is selected next, its `args` will be applied as prefilled arguments (overriding overlapping LLM-provided values).

AIAgentsStateful AgentsMemoryMemGPTContinual LearningMCPMulti-AgentRAGOpen Source

Properties

Name	Type	Description
name	string	The name of the child tool to invoke next.
args	object	Optional prefilled arguments for this child tool. Keys must match the tool's parameter names and values must satisfy the tool's JSON schema. Supports partial prefill; non-overlapping parameters are le

View JSON Schema on GitHub

JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/ToolCallNode",
  "title": "ToolCallNode",
  "properties": {
    "name": {
      "type": "string",
      "title": "Name",
      "description": "The name of the child tool to invoke next."
    },
    "args": {
      "anyOf": [
        {
          "additionalProperties": true,
          "type": "object"
        },
        {
          "type": "null"
        }
      ],
      "title": "Args",
      "description": "Optional prefilled arguments for this child tool. 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."
    }
  },
  "type": "object",
  "required": [
    "name"
  ],
  "description": "Typed child override for prefilled arguments.\n\nWhen used in a ChildToolRule, if this child is selected next, its `args` will be\napplied as prefilled arguments (overriding overlapping LLM-provided values)."
}