Creating new node using jenkins api

Using Jenkins
1

Hi
I am trying to create new node from my JS application using api request, and i always got error code 400 (bad request)
i cant find in the documentation what is the required fields i need to send and how the url should looks like.

this is my code:

async createNode(agentName: string, url: string): Promise<void> {
    try {
      const data = JSON.stringify({
        name: agentName,
        nodeDescription: '',
        numExecutors: 1,
        remoteFS: 'C:\\Jenkins',
        labelString: '',
        mode: 'EXCLUSIVE',
        retentionStrategy: {
          'stapler-class': 'hudson.slaves.RetentionStrategy$Always',
        },
        launcher: {
          'stapler-class': 'hudson.slaves.JNLPLauncher',
        },
        nodeProperties: {
          'stapler-class-bag': 'true',
        },
      });
      const response = await this.axiosInstance.post(
        `${url}/computer/doCreateItem?name=${agentName}&type=hudson.slaves.DumbSlave`,
        data,
        {
          headers: {
            'Content-Type': 'application/json',
          },
        },
      );
      if (response.status !== 200) {
        throw new HttpException(
          `Failed to create node: ${response.statusText}`,
          HttpStatus.INTERNAL_SERVER_ERROR,
        );
      }
    } catch (error) {
      throw new HttpException(
        `Failed to create node: ${error}`,
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }