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Get recommendation - Amazon Bedrock AgentCore
Code samplesRequest parametersResponseExample responsesErrors

Get recommendation

Retrieve the status and results of a recommendation. Poll this operation until the recommendation reaches a terminal state (COMPLETED or FAILED).

Code samples

Example
AgentCore CLI

The CLI automatically polls until completion when you run agentcore run recommendation. To view past recommendation runs from the local project cache:

agentcore recommendations history

View as JSON:

agentcore recommendations history --json
AWS SDK (boto3)

Poll until completion and extract the result:

import time
import boto3

client = boto3.client("bedrock-agentcore", region_name="us-west-2")

# Poll until terminal state
while True:
    result = client.get_recommendation(recommendationId=recommendation_id)
    status = result["status"]
    print(f"Status: {status}")

    if status in ("COMPLETED", "FAILED"):
        break
    time.sleep(15)

# Extract system prompt result
if status == "COMPLETED":
    rec_result = result.get("recommendationResult", {})

    if "systemPromptRecommendationResult" in rec_result:
        sys_result = rec_result["systemPromptRecommendationResult"]
        print(f"Recommended prompt:\n{sys_result['recommendedSystemPrompt']}")

        if "configurationBundle" in sys_result:
            bundle = sys_result["configurationBundle"]
            print(f"New bundle version: {bundle['versionId']}")

    elif "toolDescriptionRecommendationResult" in rec_result:
        tool_result = rec_result["toolDescriptionRecommendationResult"]
        for tool in tool_result.get("tools", []):
            print(f"{tool['toolName']}: {tool['recommendedToolDescription']}")

elif status == "FAILED":
    rec_result = result.get("recommendationResult", {})
    r = rec_result.get("systemPromptRecommendationResult") or rec_result.get("toolDescriptionRecommendationResult")
    print(f"Error: [{r['errorCode']}] {r['errorMessage']}")

Extract configuration bundle reference for use in A/B testing:

result = client.get_recommendation(recommendationId=recommendation_id)

if result["status"] == "COMPLETED":
    rec_result = result["recommendationResult"]
    sys_result = rec_result.get("systemPromptRecommendationResult", {})

    if "configurationBundle" in sys_result:
        bundle_arn = sys_result["configurationBundle"]["bundleArn"]
        version_id = sys_result["configurationBundle"]["versionId"]
        print(f"Use in A/B test: bundle={bundle_arn}, version={version_id}")

Request parameters

Parameter Type Required Description

recommendationId

String

Yes

The recommendation ID returned by StartRecommendation. Passed as a path parameter.

Response

Field Type Description

recommendationId

String

Unique identifier for the recommendation.

recommendationArn

String

ARN of the recommendation.

name

String

The recommendation name.

type

String

SYSTEM_PROMPT_RECOMMENDATION or TOOL_DESCRIPTION_RECOMMENDATION.

status

String

Current status: PENDING, IN_PROGRESS, COMPLETED, FAILED, or DELETING.

recommendationConfig

Object

The configuration you submitted.

recommendationResult

Object

Present when status is COMPLETED. Contains the optimized configuration. The shape depends on the recommendation type.

createdAt

Timestamp

When the recommendation was created.

updatedAt

Timestamp

When the recommendation was last updated.

System prompt result fields

Present in recommendationResult.systemPromptRecommendationResult when type is SYSTEM_PROMPT_RECOMMENDATION:

Field Type Description

recommendedSystemPrompt

String

The optimized system prompt text.

configurationBundle

Object

Present when the input was a configuration bundle. Contains bundleArn and versionId for the new bundle version.

errorCode

String

Present on failure. Error code.

errorMessage

String

Present on failure. Human-readable description.

Tool description result fields

Present in recommendationResult.toolDescriptionRecommendationResult when type is TOOL_DESCRIPTION_RECOMMENDATION:

Field Type Description

tools

List

Per-tool results. Each entry contains toolName (string) and recommendedToolDescription (string).

configurationBundle

Object

Present when the input was a configuration bundle. Contains bundleArn and versionId for the new bundle version.

errorCode

String

Present on failure. Error code.

errorMessage

String

Present on failure. Human-readable description.

Example responses

Completed system prompt recommendation (inline input):

{
    "recommendationId": "MyPromptRec-Ab1Cd2Ef3G",
    "recommendationArn": "arn:aws:bedrock-agentcore:us-west-2:123456789012:recommendation/MyPromptRec-Ab1Cd2Ef3G",
    "name": "my-prompt-rec",
    "type": "SYSTEM_PROMPT_RECOMMENDATION",
    "status": "COMPLETED",
    "recommendationConfig": { ... },
    "recommendationResult": {
        "systemPromptRecommendationResult": {
            "recommendedSystemPrompt": "<optimized system prompt text>"
        }
    },
    "createdAt": "2025-03-15T10:00:00Z",
    "updatedAt": "2025-03-15T10:05:30Z"
}

Completed system prompt recommendation (configuration bundle input):

{
    "recommendationId": "MyBundleRec-Xy9Zw8Vq1R",
    "recommendationArn": "arn:aws:bedrock-agentcore:us-west-2:123456789012:recommendation/MyBundleRec-Xy9Zw8Vq1R",
    "name": "my-bundle-prompt-rec",
    "type": "SYSTEM_PROMPT_RECOMMENDATION",
    "status": "COMPLETED",
    "recommendationConfig": { ... },
    "recommendationResult": {
        "systemPromptRecommendationResult": {
            "recommendedSystemPrompt": "<optimized system prompt text>",
            "configurationBundle": {
                "bundleArn": "arn:aws:bedrock-agentcore:us-west-2:123456789012:configuration-bundle/myBundle-Ab1Cd2Ef3G",
                "versionId": "12345678-1234-1234-1234-123456789012"
            }
        }
    },
    "createdAt": "2025-03-15T10:00:00Z",
    "updatedAt": "2025-03-15T10:06:12Z"
}

Completed tool description recommendation:

{
    "recommendationId": "MyToolRec-Qr5St6Uv7W",
    "recommendationArn": "arn:aws:bedrock-agentcore:us-west-2:123456789012:recommendation/MyToolRec-Qr5St6Uv7W",
    "name": "my-tool-rec",
    "type": "TOOL_DESCRIPTION_RECOMMENDATION",
    "status": "COMPLETED",
    "recommendationConfig": { ... },
    "recommendationResult": {
        "toolDescriptionRecommendationResult": {
            "tools": [
                {
                    "toolName": "<tool-name-1>",
                    "recommendedToolDescription": "<optimized description for tool 1>"
                },
                {
                    "toolName": "<tool-name-2>",
                    "recommendedToolDescription": "<optimized description for tool 2>"
                }
            ]
        }
    },
    "createdAt": "2025-03-15T11:00:00Z",
    "updatedAt": "2025-03-15T11:04:45Z"
}

Failed recommendation:

{
    "recommendationId": "MyFailedRec-Mn3Op4Qr5S",
    "recommendationArn": "arn:aws:bedrock-agentcore:us-west-2:123456789012:recommendation/MyFailedRec-Mn3Op4Qr5S",
    "name": "my-failed-rec",
    "type": "SYSTEM_PROMPT_RECOMMENDATION",
    "status": "FAILED",
    "recommendationConfig": { ... },
    "recommendationResult": {
        "systemPromptRecommendationResult": {
            "errorCode": "<error-code>",
            "errorMessage": "<human-readable error description>"
        }
    },
    "createdAt": "2025-03-15T12:00:00Z",
    "updatedAt": "2025-03-15T12:01:10Z"
}

Errors

Error HTTP status Description

ResourceNotFoundException

404

No recommendation found with the specified ID.

ValidationException

400

Invalid recommendation ID format.

AccessDeniedException

403

Insufficient permissions.

ThrottlingException

429

Request rate exceeded.

InternalServerException

500

Service-side error.