Server Endpoints

Factor's provides an endpoint server where you, or plugins, can add custom endpoints. These allow you to work with privileged functionality and external APIs.

About Endpoints

An endpoint is a path on a server designed to take HTTP requests and return responses.

In Factor's case, all endpoint requests return responses in JSend JSON format.

Factor's endpoint system is built on standard Express and Node based syntax.

Creating Custom Endpoints

Custom endpoints accept a handler which is passed the HTTP request and response. It should return a JSend result.

The format for a simple endpoint is as follows:

import express from "express"
import { EndpointResponse } from "@factor/api"
const myEndpoint = {
  name: "myCustomEndpoint",
  route: "/my-endpoint-path/:param",
  handler: async (request: express.Request): Promise<EndpointResponse> => {
    const myParam = request.params.param
    const args = request.body

    // do stuff

    return {
      status: "success",
      data: { foo: "bar" },

Once you have your endpoint created, all you need to do is add it to the endpoints array in your server entry file (server.ts)

// FILE: server.ts
import { myEndpoint } from "./custom-endpoint"

export const setup = () => {
  return {
    endpoints: [myEndpoint],

Making Requests to Custom Endpoints

From your application you should be able to make direct HTTP requests to your endpoints. The only function you'll need to run your own requests is the baseURL of your server.

  • serverUrl() - Get the url of the endpoint server. Note you'll need to set FACTOR_SERVER_URL env. variable in production or whenever you're not using the localhost endpoint server which default to port 3210

Here is an example making a request to the above custom endpoint using axios and serverUrl()

import axios from "axios"

const response = await axios.request({
  method: "POST",
  url: "/my-endpoint-path/some-param",
  baseURL: serverUrl(),