Last updated: 2019-08-18 22:55:00


1. API Description

API request domain name:

This API runs the function.

Default API request frequency limit: 20 times/second.

2. Input Parameters

The following parameters are required for requesting this API, including action-specific parameters and common parameters. For more information about common parameters for all requests, see Common Request Parameters.

Parameter name Required Type Description
Action Yes String Common parameter; the name of this API: Invoke
Version Yes String Common parameter; the version of this API: 2018-04-16
Region Yes String Common parameters; for details, see the Region List.
FunctionName Yes String Name of the function
InvocationType No String RequestResponse (sync) and Event (asynchronous); sync by default
Qualifier No String Version number that triggers the function
ClientContext No String Parameters when executing the function; input in JSON format; the maximum supported parameter size is 1 MB
LogType No String
Namespace No String Namespace

3. Output Parameters

Parameter name Type Description
Result Result Execution result of the function
RequestId String The ID of the request. Each request returns a unique ID. The RequestId is required to troubleshoot issues.

4. Sample

Executing a Function

Input Sample Code
&<Common request parameter>

Output Sample Code

    "Response": {
        "Result": {
            "MemUsage": 3207168,
            "Log": "",
            "RetMsg": "hello from scf",
            "BillDuration": 100,
            "FunctionRequestId": "6add56fa-58f1-11e8-89a9-5254005d5fdb",
            "Duration": 0.826,
            "ErrMsg": "",
            "InvokeResult": 0
        "RequestId": "c2af8a64-c922-4d55-aee0-bd86a5c2cd12"

5. Developer Resources

API Explorer

This tool provides various capabilities such as online call, signature verification, SDK code generation, and quick API retrieval that significantly reduce the difficulty of using TencentCloud API.

6. Error Codes

The following error codes are API business logic-related. For other error codes, see Common Error Codes.

Error Code Description
InternalError Internal error
InternalError.System Internal system error.
InvalidParameterValue An invalid value was declared for the input parameter.
InvalidParameterValue.Param The input parameter is not in standard JSON format.
ResourceNotFound.FunctionName Function does not exist.
ResourceUnavailable.InsufficientBalance The balance is insufficient. Please top up first.
UnauthorizedOperation.CAM CAM authentication failed.