API reference · schema
PRMStepEvaluateRequest
8 fields · used by 0 operations
Last reviewed 2026-10-03
Fields
| Field | Type | Meaning |
|---|---|---|
step_index | integer | default 1 |
tool required | string | Tool name invoked |
action_description | string | Semantic description of action default "" |
parameters | object | |
predicted_effect | string | default "" |
rationale | string | default "" |
parent_goal | string or null | default "" |
cumulative_history | array of object or null |
Smallest valid example
{
"step_index": 1,
"tool": "tool",
"action_description": "",
"predicted_effect": "",
"rationale": "",
"parent_goal": ""
}JSON Schema
Show the raw definition
{
"properties": {
"step_index": {
"type": "integer",
"title": "Step Index",
"default": 1
},
"tool": {
"type": "string",
"title": "Tool",
"description": "Tool name invoked"
},
"action_description": {
"type": "string",
"title": "Action Description",
"description": "Semantic description of action",
"default": ""
},
"parameters": {
"additionalProperties": true,
"type": "object",
"title": "Parameters"
},
"predicted_effect": {
"type": "string",
"title": "Predicted Effect",
"default": ""
},
"rationale": {
"type": "string",
"title": "Rationale",
"default": ""
},
"parent_goal": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Parent Goal",
"default": ""
},
"cumulative_history": {
"anyOf": [
{
"items": {
"additionalProperties": true,
"type": "object"
},
"type": "array"
},
{
"type": "null"
}
],
"title": "Cumulative History"
}
},
"type": "object",
"required": [
"tool"
],
"title": "PRMStepEvaluateRequest"
}Try CAIN-42 on your own agents
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