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Database Autonomy Service:GetDasAgentSSE

Last Updated:Mar 13, 2026

Uses Server-Sent Events (SSE) to interact with the DAS Large Language Model (LLM). You can use this API for features such as Q&A and performance diagnostics.

Operation description

This is a paid API. Billing is based on the number of output characters. Before using this API, ensure you fully understand the billing method and pricing for the DAS Agent product. For more information, see the Java and Python call examples.

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Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

hdm:GetDasAgentSSE

get

*All Resource

*

None None

Request syntax

POST /getDasAgentSSE HTTP/1.1

Request parameters

Parameter

Type

Required

Description

Example

Query

string

Yes

Natural language description of the question or request.

Are there any issues or abnormalities with my instance rm-xxx?

InstanceId

string

No

Deprecated parameter. Pass the instance ID in the Query field instead.

rm-xxxx

SessionId

string

No

Optional. The session ID as a UUID string. If not provided, a new session is created. Use the same SessionId for context-aware conversations.

123e4567-e89b-12d3-a456-xxxxxxxxxxxx

AgentId

string

No

Optional. By default, the system uses the default agent. Alternatively, specify an agent ID generated after enabling the DAS Agent service or created manually.

ag-472T0DxtmjIxxxxx

Response elements

Element

Type

Description

Example

object

Schema of Response

Id

string

The session ID. Matches the SessionId in the request.

123e4567-e89b-12d3-a456-xxxxxxxxxxxx

Answer

string

The response content.

rm-xxxx

Metadata

object

Metadata.

Code

integer

The error code. This field is empty if no exception occurs.

-1810001

CharCount

integer

The number of characters in the response.

1403

ToolName

string

The tool command that was called.

SqlFilter

ToolParams

array

The tool parameters.

string

A list of strings.

["--instanceId", "rm-*****", "--sqlText", "select~from~das~where~name~das1"]

RequestId

string

The request ID.

04930480-9404-50CB-8252-Axxxxxxxx

Event

string

The type of response message.

Valid values:

  • summary :

    Statistics about the response.

  • error :

    An error message.

  • agent_message :

    The response generated by the LLM.

summary

Examples

Success response

JSON format

{
  "Id": "123e4567-e89b-12d3-a456-xxxxxxxxxxxx",
  "Answer": "rm-xxxx",
  "Metadata": {
    "Code": -1810001,
    "CharCount": 1403,
    "ToolName": "SqlFilter",
    "ToolParams": [
      "[\"--instanceId\", \"rm-*****\", \"--sqlText\", \"select~from~das~where~name~das1\"]"
    ],
    "RequestId": "04930480-9404-50CB-8252-Axxxxxxxx"
  },
  "Event": "summary"
}

Error codes

HTTP status code

Error code

Error message

Description

400 InvalidParams The request parameters are invalid.
500 Timeout The request processing has failed due to timeout. Request processing failed due to timeout.
403 NoPermission You are not authorized to do this action.
404 InstanceNotFound Requested instance not found. The corresponding instance ID cannot be found.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.