curl --request POST \
  --url https://api.iotools.cloud/v1/tool/stack-trace-formatter \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "stackTrace": "java.lang.NullPointerException: Cannot invoke \"String.length()\" because \"name\" is null\n\tat com.example.users.UserService.greet(UserService.java:42)\n\tat com.example.users.UserController.handle(UserController.java:18)\n\tat org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)\n\tat org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150)\n\tat org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)\n\tat javax.servlet.http.HttpServlet.service(HttpServlet.java:622)\nCaused by: java.lang.IllegalStateException: User repo not initialised\n\tat com.example.users.UserService.init(UserService.java:24)\n\t... 5 more",
  "language": "auto",
  "collapseVendor": "true",
  "showFrameIndex": "true"
}
'

{
  "tool": "stack-trace-formatter",
  "tool_version": "1.0.1",
  "outputs": {
    "markdownOutput": "### Stack Trace — Java\n\n**Exception:** java.lang.NullPointerException: Cannot invoke \"String.length()\" because \"name\" is null\n\n```text\n#0 com.example.users.UserService.greet  (UserService.java:42)\n#1 com.example.users.UserController.handle  (UserController.java:18)\n... 4 framework/vendor frames collapsed ...\n\nCaused by: java.lang.IllegalStateException: User repo not initialised\n#0 com.example.users.UserService.init  (UserService.java:24)\n```\n"
  },
  "credits_used": 3,
  "credits_remaining": null
}