.gif)
We build custom applications 5x faster and cheaper 🚀
Book a Free Consultation
Stuck on an error? Book a 30-minute call with an engineer and get a direct fix + next steps. No pressure, no commitment.
Replit integrates with Miro by connecting your Repl (a running program you build and host on Replit) to the official Miro REST API. You authenticate using an OAuth 2.0 access token or a permanent developer token from your Miro account, store that token in Replit Secrets, and then make HTTPS requests from your Repl to the Miro API endpoints. This allows your code to create, read, or modify Miro boards, widgets, users, and webhooks programmatically. You can also use a Repl’s exposed public URL to handle Miro Webhooks, reacting in real-time when a board changes.
Miro’s API is an HTTPS-based service that lets any server (like your Repl) interact with Miro boards. It requires authorization — this means Miro only allows actions if they come from an app that has user permission. Replit can act as that server-side app.
.png)
.png)
npm install express node-fetch body-parser
MIRO\_TOKEN with the developer token value.0.0.0.0 with an explicit port (usually process.env.PORT).
import express from "express"
import fetch from "node-fetch"
const app = express()
app.use(express.json())
// Basic endpoint just to test if the server is running
app.get("/", (req, res) => {
res.send("Miro Integration Active")
})
// Fetch list of boards from Miro
app.get("/boards", async (req, res) => {
const resp = await fetch("https://api.miro.com/v2/boards", {
headers: {
"Authorization": `Bearer ${process.env.MIRO_TOKEN}`,
"Content-Type": "application/json"
}
})
const data = await resp.json()
res.json(data)
})
// Start Repl server on 0.0.0.0
const PORT = process.env.PORT || 3000
app.listen(PORT, "0.0.0.0", () => {
console.log(`Server running on port ${PORT}`)
})
When you run this Repl, open the “Webview” or public URL shown by Replit (e.g. https://miro-app.yourname.repl.co/boards). This endpoint will contact Miro and return your board list if your token is valid.
If you need real-time notifications (e.g., when items are created), you can register your Repl’s public URL with Miro’s Webhook API. Set up an endpoint like /webhook to receive POST notifications.
app.post("/webhook", (req, res) => {
// Verify Miro webhook signature if configured (optional)
console.log("Webhook event received:", req.body)
res.sendStatus(200)
})
Use your Repl’s full HTTPS URL in Miro’s webhook registration API call:
https://api.miro.com/v2/webhooks, specifying your /webhook URL in the body.
With these steps, your Repl becomes a live integration that can read, write, and listen to changes in Miro — using only explicit, real APIs and securely managed credentials.
1
Connect a Replit backend with the Miro REST API to automatically save team brainstorming boards into a project’s repository. Developers can run a Node.js or Python server in Replit that fetches boards, frames, or sticky notes from Miro using an API token stored in Replit Secrets. Each time the board updates, the app captures data via a Miro webhook and stores it as structured JSON in the project folder, helping development teams keep documentation synced with code.
access\_token.from flask import Flask, request
import os, requests, json
app = Flask(__name__)
MIRO_TOKEN = os.environ["MIRO_TOKEN"]
@app.route("/webhook", methods=["POST"])
def webhook():
data = request.json
with open("miro_snapshot.json","w") as f:
json.dump(data,f,indent=2)
return {"status":"saved"}
app.run(host="0.0.0.0", port=8000)
2
Build an integration where Miro is used as a visual planning surface and Replit executes real code linked to Miro objects. For example, a product manager drags components named “API”, “DB”, “Frontend” on Miro; Replit’s service reads them via Miro API, then generates boilerplate code or configuration files inside the Repl. This creates a live feedback loop between design and development, with Miro acting as a front-end planning canvas and Replit handling the execution layer.
import requests, os
token = os.environ["MIRO_TOKEN"]
board_id = os.environ["MIRO_BOARD_ID"]
resp = requests.get(f"https://api.miro.com/v2/boards/{board_id}/items",
headers={"Authorization": f"Bearer {token}"})
items = resp.json()["data"]
for item in items:
with open(f"{item['id']}.txt","w") as f:
f.write(f"Generated for: {item['data'].get('content','Unnamed')}")
3
For teaching environments, integrate Miro with Replit to link visual lesson boards to active Replit projects. When the instructor posts exercises on a Miro board, each student’s Repl automatically receives code templates or feedback updates from Miro’s shared area. The synchronization happens through a lightweight Node.js service in Replit subscribed to Miro webhooks. This makes code-based collaboration smoother and keeps instruction boards dynamically reflected in code environments.
import express from "express"
import fs from "fs"
import bodyParser from "body-parser"
const app = express()
app.use(bodyParser.json())
app.post("/miro-update",(req,res)=>{
fs.writeFileSync("lesson.json", JSON.stringify(req.body,null,2))
res.json({received:true})
})
app.listen(8000,"0.0.0.0",()=>console.log("Listening for Miro updates"))
Speak one‑on‑one with a senior engineer about your no‑code app, migration goals, and budget. In just half an hour you’ll leave with clear, actionable next steps—no strings attached.
1
You can connect Miro’s REST API to a Replit backend securely by performing the OAuth 2.0 flow instead of hardcoding or exposing the API key. In this setup, your Replit app stores the obtained access tokens in Replit Secrets (as environment variables), and never the raw API key itself. The API key is used only during token exchange on the server side, invisible to users or frontend code. This way, no sensitive credentials ever leave your backend.
// Example in Express.js
import express from "express";
import fetch from "node-fetch";
const app = express();
app.get("/oauth/callback", async (req, res) => {
const code = req.query.code;
const response = await fetch("https://api.miro.com/v1/oauth/token", {
method: "POST",
headers: {"Content-Type": "application/x-www-form-urlencoded"},
body: new URLSearchParams({
grant_type: "authorization_code",
code,
client_id: process.env.MIRO_CLIENT_ID,
client_secret: process.env.MIRO_CLIENT_SECRET,
redirect_uri: "https://your-repl-name.username.repl.co/oauth/callback"
})
});
const data = await response.json();
res.send("Authorized, token securely stored or processed.");
});
app.listen(3000, "0.0.0.0");
2
When Miro OAuth callback is not redirecting back on Replit, it usually means the redirect_uri you registered in your Miro app doesn’t match the actual Replit public URL your server is using. Replit uses dynamic URLs during preview and port mappings; unless you specify the same exact HTTPS URL in the Miro app settings, Miro will reject the redirect or hit a dead route.
Use Replit’s visible HTTPS URL (like https://your-repl-name.username.repl.co) as the redirect URI in Miro’s developer console. Inside your app, handle the callback route explicitly so Miro knows where to send the user after authorization. Ensure your Express server listens on 0.0.0.0 and port process.env.PORT to let Replit forward traffic correctly.
import express from "express"
const app = express()
app.get("/auth/miro/callback", async (req,res)=>{
// Exchange code for tokens
console.log(req.query.code)
res.send("Miro OAuth Success!")
})
app.listen(process.env.PORT, "0.0.0.0", ()=>{
console.log("Server running on", process.env.PORT)
})
3
When Replit’s frontend JavaScript fetches data directly from the Miro API, the browser blocks it because Miro’s API doesn’t allow arbitrary origins via CORS. The fix is to move that call to your backend running on Replit, fetch data from Miro there using your OAuth token (stored in Replit Secrets), and then return it safely to the browser. This makes the browser’s request target your own Repl endpoint, not Miro’s domain, which removes the CORS restriction.
The browser blocks cross-domain calls unless the remote server includes specific CORS headers. Miro API doesn’t include those, so you must use your backend as a proxy. Your Node.js (Express) server can communicate securely with Miro and respond to the frontend.
import express from "express"
import fetch from "node-fetch"
const app = express()
app.get("/miro", async (req, res) => {
const r = await fetch("https://api.miro.com/v2/boards", {
headers: { "Authorization": `Bearer ${process.env.MIRO_TOKEN}` }
})
const data = await r.json()
res.json(data)
})
app.listen(3000, "0.0.0.0") // Replit binds to all interfaces
Then in the browser, call /miro instead of Miro’s API URL. Your Repl handles authentication and CORS transparently.
Developers often use a placeholder or local address instead of the actual public Replit URL for the Miro OAuth redirect. Miro must call back to an active HTTPS URL where your Repl is running. If you use http://localhost or forget to update the port mapping, authorization fails with “redirect_uri_mismatch.” Always copy your running Repl’s URL (for example, https://your-repl-name.username.repl.co/oauth/callback) and set it as the Redirect URL in Miro’s developer dashboard.
// Express route handling OAuth callback from Miro
app.get("/oauth/callback", async (req, res) => {
const code = req.query.code
// Exchange code for access token using Miro's endpoint
})
Many integrations fail because access tokens and client secrets are hardcoded into the code. In Replit, these values should always be stored as Secrets (in the “Secrets” tab) to keep them private and persistent. Otherwise, anyone viewing the Repl can see and misuse your integration credentials. Always read them from environment variables in your code.
const clientId = process.env.MIRO_CLIENT_ID
const clientSecret = process.env.MIRO_CLIENT_SECRET
Replit web servers must bind to 0.0.0.0 instead of localhost, and use the port from process.env.PORT. When developers use fixed ports like 3000, the app won’t be reachable from Miro webhooks or browser callbacks. The Replit runtime dynamically assigns the port, so using the environment variable ensures requests reach your running server correctly.
app.listen(process.env.PORT, "0.0.0.0", () => {
console.log("Server running on", process.env.PORT)
})
When connecting Miro webhooks to a Replit app, skipping verification handling is a common error. Miro sends a challenge parameter on first setup to confirm your endpoint. If your Replit server doesn’t echo this value back, the webhook stays unverified and fails to send events. Handle this check explicitly with a simple condition before processing any real data.
app.post("/miro/webhook", (req, res) => {
if (req.body.challenge) {
// Verification step
res.status(200).send({ challenge: req.body.challenge })
return
}
// Handle real webhook payload here
})
This prompt helps an AI assistant understand your setup and guide you through the fix step by step, without assuming technical knowledge.
From startups to enterprises and everything in between, see for yourself our incredible impact.
They do complex work on extremely fast timelines and effectively manage the testing and pre-launch process to deliver the best possible product. I'm extremely impressed with their execution ability.
