# Prefill an agent test from a conversation

Build a new Agent Testing definition from append-only conversation events through the selected user or agent message without deriving history from dashboard HTML.

## Endpoint

`POST /api/v1/workspaces/{workspace_id}/conversations/{conversation_id}/agent-tests/prefill`

## Authentication

| Class | Authentication | Minimum role | API key |
| --- | --- | --- | --- |
| customer-api | Bearer API key or dashboard session cookie; dashboard mutations also require X-CX-Request: 1. | member | Allowed |

## Parameters

| Name | In | Type | Required | Description |
| --- | --- | --- | --- | --- |
| `workspace_id` | path | `string` | Yes | — |
| `conversation_id` | path | `string` | Yes | — |

## Request body

### application/json request schema

| Field path | Type | Reference | Format | Nullable | Required | Enum | Description |
| --- | --- | --- | --- | --- | --- | --- | --- |
| `$` | `object` | PrefillBody | — | No | Yes | — | — |
| `event_seq` | `integer` | — | — | No | Yes | — | — |

## Example

```bash
curl --request POST 'https://operade.ai/api/v1/workspaces/ws_demo/conversations/conv_demo/agent-tests/prefill' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{"event_seq":12}'
```

## Responses

| Status | Description | Content |
| --- | --- | --- |
| 4XX | Handled client error | application/json: `ErrorResponse` |
| 200 | Successful Response | application/json: `PrefillResponse` |

### 4XX application/json response schema

| Field path | Type | Reference | Format | Nullable | Required | Enum | Description |
| --- | --- | --- | --- | --- | --- | --- | --- |
| `$` | `object` | ErrorResponse | — | No | Yes | — | — |
| `error` | `object` | ErrorItem | — | No | Yes | — | — |
| `error.code` | `string` | — | — | No | Yes | — | — |
| `error.details` | `object` | — | — | No | No | — | — |
| `error.message` | `string` | — | — | No | Yes | — | — |

### 200 application/json response schema

| Field path | Type | Reference | Format | Nullable | Required | Enum | Description |
| --- | --- | --- | --- | --- | --- | --- | --- |
| `$` | `object` | PrefillResponse | — | No | Yes | — | — |
| `agent_id` | `string` | — | — | No | Yes | — | — |
| `definition` | `object` | PrefillDefinition | — | No | Yes | — | — |
| `definition.chat_history` | `array<HistoryEntry>` | — | — | No | Yes | — | — |
| `definition.chat_history[]` | `object` | HistoryEntry | — | No | Yes | — | — |
| `definition.chat_history[].message` | `string or null` | — | — | Yes | No | — | — |
| `definition.chat_history[].role` | `string` | — | — | No | Yes | "user", "agent" | — |
| `definition.chat_history[].tool_calls` | `array<ToolCall>` | — | — | No | No | — | — |
| `definition.chat_history[].tool_calls[]` | `object` | ToolCall | — | No | Yes | — | Bagian stabil kontrak vendor; detail bertipe baru tetap dipertahankan. |
| `definition.chat_history[].tool_calls[].params_as_json` | `string` | — | — | No | Yes | — | — |
| `definition.chat_history[].tool_calls[].request_id` | `string` | — | — | No | Yes | — | — |
| `definition.chat_history[].tool_calls[].tool_details` | `object or null` | — | — | Yes | No | — | — |
| `definition.chat_history[].tool_calls[].tool_has_been_called` | `boolean` | — | — | No | Yes | — | — |
| `definition.chat_history[].tool_calls[].tool_name` | `string` | — | — | No | Yes | — | — |
| `definition.chat_history[].tool_calls[].type` | `string or null` | — | — | Yes | No | — | — |
| `definition.chat_history[].tool_results` | `array<ToolResult>` | — | — | No | No | — | — |
| `definition.chat_history[].tool_results[]` | `object` | ToolResult | — | No | Yes | — | — |
| `definition.chat_history[].tool_results[].is_blocked` | `boolean` | — | — | No | No | — | — |
| `definition.chat_history[].tool_results[].is_error` | `boolean` | — | — | No | Yes | — | — |
| `definition.chat_history[].tool_results[].request_id` | `string` | — | — | No | Yes | — | — |
| `definition.chat_history[].tool_results[].result_value` | `string` | — | — | No | Yes | — | — |
| `definition.chat_history[].tool_results[].tool_has_been_called` | `boolean` | — | — | No | Yes | — | — |
| `definition.chat_history[].tool_results[].tool_latency_secs` | `number` | — | — | No | No | — | — |
| `definition.chat_history[].tool_results[].tool_name` | `string` | — | — | No | Yes | — | — |
| `definition.chat_history[].tool_results[].type` | `string` | — | — | No | Yes | — | — |
| `definition.conversation_initiation_source` | `string` | — | — | No | Yes | "unknown", "telegram_integration" | — |
| `definition.dynamic_variables` | `object` | — | — | No | Yes | — | — |
| `definition.from_conversation_metadata` | `object` | FromConversationMetadata | — | No | Yes | — | — |
| `definition.from_conversation_metadata.conversation_id` | `string` | — | — | No | Yes | — | — |
| `definition.from_conversation_metadata.event_seq` | `integer` | — | — | No | Yes | — | — |
| `definition.from_conversation_metadata.original_agent_response` | `string or null` | — | — | Yes | No | — | — |
| `definition.from_conversation_metadata.system__conversation_id` | `string or null` | — | — | Yes | No | — | — |
| `definition.from_conversation_metadata.system__time_utc` | `string` | — | date-time | No | Yes | — | — |
| `definition.type` | `string` | — | — | No | Yes | "simulation", "llm" | — |

### Response example

```json
{
  "agent_id": "string",
  "definition": {
    "type": "simulation",
    "chat_history": [],
    "dynamic_variables": {},
    "conversation_initiation_source": "unknown",
    "from_conversation_metadata": {
      "conversation_id": "string",
      "event_seq": 0,
      "system__time_utc": "2026-01-01T00:00:00Z"
    }
  }
}
```

## Errors

Reviewed common and route-declared errors are summarized here; the list is not exhaustive. Start with the [distributed error index](/docs/reference/api/errors) to find each code's canonical domain page.

| Status | Code | Description |
| --- | --- | --- |
| 401 | `unauthenticated` | Authentication is missing, invalid, or revoked. |
| 403 | `forbidden` | The authenticated caller does not have access to this operation. |
| 404 | `not_found` | The requested workspace resource was not found. |
| 422 | `validation_failed` | The request did not pass field or business validation. |

## Related operations

- [Create an agent test](/docs/api-reference/agent-tests/create-agent-test) — `POST /api/v1/workspaces/{workspace_id}/agent-tests`
- [Delete an agent test](/docs/api-reference/agent-tests/delete-agent-test) — `DELETE /api/v1/workspaces/{workspace_id}/agent-tests/{test_id}`
- [Get an agent test](/docs/api-reference/agent-tests/get-agent-test) — `GET /api/v1/workspaces/{workspace_id}/agent-tests/{test_id}`