Update Circuit Breaker Settings

Endpoint

PATCH /apiops/projects/{projectName}/apiProxies/{apiProxyName}/settings/circuit-breaker/

Warning

This endpoint returns HTTP 400 for API proxies with type=AI. In earlier releases it returned 200 OK but had no effect (a silent no-op) — this is a behavior change and existing CI/CD pipelines that call this endpoint against AI proxies may be affected.

The AI proxy runtime does not read the classic routing object; the equivalent configuration lives under aiRouting. Use Update AI Routing instead.

Authentication

Requires a Personal API Access Token.

Header

Authorization: Bearer YOUR_TOKEN

Request

Headers

Header	Value	Required
Authorization	Bearer {token}	Yes
Content-Type	application/json	Yes

Path Parameters

Parameter	Type	Required	Description
projectName	string	Yes	Project name
apiProxyName	string	Yes	API Proxy name

Request Body

Full JSON Body Example

{
  "circuitBreakerEnabled": true,
  "errorWindow": 60,
  "errorThresholdValue": 5,
  "enumErrorThresholdType": "COUNT",
  "sleepWindow": 30,
  "halfOpenEnabled": true,
  "deploy": false,
  "deployTargetEnvironmentNameList": []
}

Request Body Fields

Field	Type	Required	Default	Description
circuitBreakerEnabled	boolean	No	-	Enable/disable circuit breaker
errorWindow	integer	No	-	Time window in seconds to count errors
errorThresholdValue	integer	No	-	Error threshold value (count or percentage)
enumErrorThresholdType	string	No	-	Error threshold type
sleepWindow	integer	No	-	Sleep window in seconds (circuit breaker stays open)
halfOpenEnabled	boolean	No	-	Enable half-open state (test requests)
deploy	boolean	No	false	If true, deploy the API proxy after saving changes
deployTargetEnvironmentNameList	array[string]	No	-	List of environment names to deploy to (required when deploy=true)

EnumErrorThresholdType

• COUNT - Error threshold is a count (e.g., 5 errors)
• PERCENT - Error threshold is a percentage (e.g., 50% error rate)

Note: All fields are optional. Only provided fields are updated.

Response

Success Response (200 OK)

{
  "success": true
}

When deploy=true is specified:

{
  "success": true,
  "deploymentResult": {
    "success": true,
    "deploymentResults": [
      {
        "environmentName": "production",
        "success": true,
        "message": "Deployment successful"
      }
    ]
  }
}

Response Fields

Field	Type	Description
success	boolean	Indicates if the request was successful
deploymentResult	object	Deployment result (only present when deploy=true)
deploymentResult.success	boolean	Overall deployment success
deploymentResult.deploymentResults	array	Individual environment deployment results

Error Response (400 Bad Request)

{
  "status": "FAILURE",
  "resultMessage": "Invalid circuit breaker settings"
}

Error Response (401 Unauthorized)

{
  "status": "FAILURE",
  "resultMessage": "Token is not valid!"
}

cURL Example

Example 1: Enable Circuit Breaker with Count Threshold

curl -X PATCH \
  "https://demo.apinizer.com/apiops/projects/MyProject/apiProxies/MyAPI/settings/circuit-breaker/" \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "circuitBreakerEnabled": true,
    "errorWindow": 60,
    "errorThresholdValue": 5,
    "enumErrorThresholdType": "COUNT",
    "sleepWindow": 30,
    "halfOpenEnabled": true
  }'

Example 2: Enable Circuit Breaker with Percentage Threshold

curl -X PATCH \
  "https://demo.apinizer.com/apiops/projects/MyProject/apiProxies/MyAPI/settings/circuit-breaker/" \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "circuitBreakerEnabled": true,
    "errorWindow": 120,
    "errorThresholdValue": 50,
    "enumErrorThresholdType": "PERCENT",
    "sleepWindow": 60,
    "halfOpenEnabled": false
  }'

Example 3: Save and Deploy

curl -X PATCH \
  "https://demo.apinizer.com/apiops/projects/MyProject/apiProxies/MyAPI/settings/circuit-breaker/" \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "circuitBreakerEnabled": true,
    "errorWindow": 60,
    "errorThresholdValue": 5,
    "enumErrorThresholdType": "COUNT",
    "sleepWindow": 30,
    "halfOpenEnabled": true,
    "deploy": true,
    "deployTargetEnvironmentNameList": ["production"]
  }'

Notes and Warnings

• Error Window: Time window in seconds during which errors are counted
• Error Threshold: When threshold is reached, circuit breaker opens
• Sleep Window: Duration in seconds that circuit breaker stays open before attempting half-open
• Half-Open: When enabled, allows test requests to check if backend recovered
• Threshold Type: COUNT uses absolute number, PERCENT uses percentage of requests
• Deploy: When deploy=true, the API proxy is automatically deployed to the specified environments after saving

Permissions

User must have API_MANAGEMENT + MANAGE permission in the project.

Related Documentation

• Update Connection Settings - Update connection settings
• Get API Proxy - Get API proxy details