Argo HTTP Task Quick Fix - HTTP Request Template Errors

Argo Workflows HTTP tasks make API calls as workflow steps. Misconfigured HTTP templates cause connection errors, wrong request formatting, or failed response handling. This guide covers the fix.

Quick Fix

Wrong

- name: call-api
  http:
    url: https://api.example.com/data
    method: POST
    body: '{"key": "value"}'

The issue: missing headers for Content-Type, no timeoutSeconds, and no successCondition. The HTTP call may fail silently or hang if the API is slow.

Right

- name: call-api
  http:
    url: "https://api.example.com/data"
    method: "POST"
    headers:
      Content-Type: "application/json"
      Authorization: "Bearer {{workflow.parameters.token}}"
    body: '{"key": "value"}'
    timeoutSeconds: 30
    successCondition: "{{response.statusCode}} == 200"

# Expected output after applying the fix
# HTTP POST to https://api.example.com/data
# Response status: 200
# Body response saved to {{steps.call-api.outputs.result}}
# Step succeeds only on status 200

Prevention

• Always set Content-Type header for API requests
• Use timeoutSeconds to prevent hanging HTTP calls
• Define successCondition with expected status codes
• Use {{workflow.parameters.*}} for dynamic headers and URLs
• Store responses in {{steps.<name>.outputs.result}}

DodaTech Tools

Doda Browser's HTTP task tester sends sample requests and shows responses before deployment. DodaZIP archives API call logs for debugging. Durga Antivirus Pro validates request URLs against blocklists.

FAQ