创建评估器

agentcore add evaluator \
  --name "your_custom_evaluator_name" \
  --config custom_evaluator_config.json \
  --level "TRACE"

此命令将评估器添加到您的本地agentcore.json配置中。运行agentcore deploy以在您的 AWS 帐户中创建它。

输入您的自定义评估器的名称。

选择评估级别：会话、跟踪或工具调用。

选择 LLM 评委模型进行评估。

输入您的评估说明。提示必须包含至少一个占位符：{context}用于对话历史记录或{available_tools}工具列表。

选择评级标准预设或定义自定义等级。

查看评估器配置，然后按 Enter 进行确认。

import json
from bedrock_agentcore_starter_toolkit import Evaluation

eval_client = Evaluation()

# Load the configuration JSON file
with open('custom_evaluator_config.json') as f:
    evaluator_config = json.load(f)

# Create the custom evaluator
custom_evaluator = eval_client.create_evaluator(
    name="your_custom_evaluator_name",
    level="TRACE",
    description="Response quality evaluator",
    config=evaluator_config
)

import boto3
import json

client = boto3.client('bedrock-agentcore-control')

# Load the configuration JSON file
with open('custom_evaluator_config.json') as f:
    evaluator_config = json.load(f)

# Create the custom evaluator
response = client.create_evaluator(
    evaluatorName="your_custom_evaluator_name",
    level="TRACE",
    evaluatorConfig=evaluator_config
)

aws bedrock-agentcore-control create-evaluator \
    --evaluator-name 'your_custom_evaluator_name' \
    --level TRACE \
    --evaluator-config file://custom_evaluator_config.json

该评估器使用LLM来比较预期和实际的工具轨迹，从而可以进行细致的判断——例如，容忍诸如额外辅助工具调用之类的细微偏差。它使用expected_tool_trajectory和占actual_tool_trajectory位符。

将以下内容另存为trajectory_compliance_config.json：

{
  "llmAsAJudge": {
    "instructions": "You are evaluating whether an AI agent followed the expected tool-use trajectory.\n\nExpected trajectory (ordered list of tool names):\n{expected_tool_trajectory}\n\nActual trajectory (ordered list of tool names the agent used):\n{actual_tool_trajectory}\n\nFull session context:\n{context}\n\nAvailable tools:\n{available_tools}\n\nCompare the expected and actual trajectories. Consider whether the agent called the right tools in the right order. Minor deviations (e.g., an extra logging tool call) are acceptable if the core trajectory is preserved.",
    "ratingScale": {
      "numerical": [
        { "label": "No Match",      "value": 0.0, "definition": "The actual trajectory has no meaningful overlap with the expected trajectory" },
        { "label": "Partial Match", "value": 0.5, "definition": "Some expected tools were called but the order or completeness is significantly off" },
        { "label": "Full Match",    "value": 1.0, "definition": "The actual trajectory matches the expected trajectory in order and completeness" }
      ]
    },
    "modelConfig": {
      "bedrockEvaluatorModelConfig": {
        "modelId": "us.anthropic.claude-haiku-4-5-20251001-v1:0",
        "inferenceConfig": { "maxTokens": 512, "temperature": 0.0 }
      }
    }
  }
}

创建评估器：

aws bedrock-agentcore-control create-evaluator \
  --evaluator-name 'TrajectoryCompliance' \
  --level SESSION \
  --description 'Evaluates whether the agent followed the expected tool trajectory.' \
  --evaluator-config file://trajectory_compliance_config.json

该评估器检查代理的行为是否满足一组断言，并返回一个明确的判断。 PASS/FAIL/INCONCLUSIVE 它使用占assertions位符和context和。available_tools

将以下内容另存为assertion_checker_config.json：

{
  "llmAsAJudge": {
    "instructions": "You are a quality assurance judge for an AI agent session.\n\nSession context (full conversation history):\n{context}\n\nAvailable tools:\n{available_tools}\n\nAssertions to verify:\n{assertions}\n\nFor each assertion, determine if the session satisfies it. The overall verdict should be PASS only if ALL assertions are satisfied. If any assertion fails, the verdict is FAIL. If the session data is insufficient to determine, verdict is INCONCLUSIVE.",
    "ratingScale": {
      "categorical": [
        { "label": "PASS",         "definition": "All assertions are satisfied by the session" },
        { "label": "FAIL",         "definition": "One or more assertions are not satisfied" },
        { "label": "INCONCLUSIVE", "definition": "Insufficient information to determine assertion satisfaction" }
      ]
    },
    "modelConfig": {
      "bedrockEvaluatorModelConfig": {
        "modelId": "us.anthropic.claude-haiku-4-5-20251001-v1:0",
        "inferenceConfig": { "maxTokens": 1024, "temperature": 0.0 }
      }
    }
  }
}

创建评估器：

aws bedrock-agentcore-control create-evaluator \
  --evaluator-name 'AssertionChecker' \
  --level SESSION \
  --description 'Checks whether the agent session satisfies a set of assertions.' \
  --evaluator-config file://assertion_checker_config.json

该评估器将代理的实际响应与预期的响应进行比较，对语义相似度进行评分。它使用expected_response占位符在评估时接收事实真相。

将以下内容另存为response_similarity_config.json：

{
  "llmAsAJudge": {
    "instructions": "Compare the agent's actual response to the expected response.\n\nConversation context:\n{context}\n\nAgent's actual response:\n{assistant_turn}\n\nExpected response:\n{expected_response}\n\nEvaluate semantic similarity. The agent does not need to match word-for-word, but the meaning, key facts, and intent should align. Penalize missing critical information or contradictions.",
    "ratingScale": {
      "numerical": [
        { "label": "No Match",        "value": 0.0,  "definition": "The response contradicts or is completely unrelated to the expected response" },
        { "label": "Low Similarity",   "value": 0.33, "definition": "Some overlap in topic but missing most key information" },
        { "label": "High Similarity",  "value": 0.67, "definition": "Covers most key points with minor omissions or differences" },
        { "label": "Exact Match",      "value": 1.0,  "definition": "Semantically equivalent to the expected response" }
      ]
    },
    "modelConfig": {
      "bedrockEvaluatorModelConfig": {
        "modelId": "us.anthropic.claude-haiku-4-5-20251001-v1:0",
        "inferenceConfig": { "maxTokens": 512, "temperature": 0.0 }
      }
    }
  }
}

创建评估器：

aws bedrock-agentcore-control create-evaluator \
  --evaluator-name 'ResponseSimilarity' \
  --level TRACE \
  --description 'Evaluates how closely the agent response matches the expected response.' \
  --evaluator-config file://response_similarity_config.json