code: def create_agent(project_name, name, agent):
      if name is None:
          return http_error(
              HTTPStatus.BAD_REQUEST,
              "Missing field",
              'Missing "name" field for agent',
          )
  
      if "model_name" not in agent:
          return http_error(
              HTTPStatus.BAD_REQUEST,
              "Missing field",
              'Missing "model_name" field for agent',
          )
  
      model_name = agent["model_name"]
      params = agent.get("params", {})
      skills = agent.get("skills", [])
  
      agents_controller = AgentsController()
  
      try:
          existing_agent = agents_controller.get_agent(
              name, project_name=project_name
          )
      except ValueError:
          # Project must exist.
          return http_error(
              HTTPStatus.NOT_FOUND,
              "Project not found",
              f"Project with name {project_name} does not exist",
          )
      if existing_agent is not None:
          return http_error(
              HTTPStatus.CONFLICT,
              "Agent already exists",
              f"Agent with name {name} already exists. Please choose a different one.",
          )
  
      try:
          created_agent = agents_controller.add_agent(
              name, project_name, model_name, skills, params=params
          )
          return created_agent.as_dict(), HTTPStatus.CREATED
      except ValueError as e:
          # Model or skill doesn't exist.
          return http_error(
              HTTPStatus.NOT_FOUND, "Resource not found", str(e)
          )
      except NotImplementedError as e:
          # Free users trying to create agent.
          return http_error(
              HTTPStatus.UNAUTHORIZED,
              "Unavailable to free users",
              str(e),
          )
  
file_path: mindsdb/mindsdb/api/http/namespaces/agents.py
imports: from http import HTTPStatus
  from flask import request
  from flask_restx import Resource
  from mindsdb.api.http.namespaces.configs.projects import ns_conf
  from mindsdb.api.executor.controllers.session_controller import SessionController
  from mindsdb.api.http.utils import http_error
  from mindsdb.interfaces.agents.agents_controller import AgentsController
  from mindsdb.interfaces.model.functions import PredictorRecordNotFound
  from mindsdb.interfaces.storage.db import Predictor
label_desc: Use image node_id 1 for calling a global function with example usage: create_agent(project_name, name, agent) and returns: http_error, http_error, http_error, created_agent,  HTTPStatus, http_error, http_error, http_error