Use [HttpGet(“[action]”)] attribute to get the custom url for Web API for instance https://localhost:44339/api/Test/TestMethod
using System; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; using Microsoft.AspNetCore.Http; using Microsoft.AspNetCore.Mvc; namespace WebApplication1.Controllers { [Route("api/[controller]")] [ApiController] public class TestController : ControllerBase { // GET: api/Test [HttpGet] public IEnumerable<string> Get() { return new string[] { "value1", "value2" }; } // GET: api/Test/TestMethod [HttpGet("[action]")] public IEnumerable<string> TestMethod() { return new string[] { "value1", "value2" }; } // GET: api/Test/5 [HttpGet("{id}", Name = "Get")] public string Get(int id) { return "value"; } // POST: api/Test [HttpPost] public void Post([FromBody] string value) { } // PUT: api/Test/5 [HttpPut("{id}")] public void Put(int id, [FromBody] string value) { } // DELETE: api/ApiWithActions/5 [HttpDelete("{id}")] public void Delete(int id) { } } }