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Installation

Install the Strata SDK with your favorite package manager: 
npm install @connectstrata/strata-frontend-sdk

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Setup

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1. Create a signing key in the Strata dashboard

In the Strata dashboard, navigate to the Settings page by selecting Settings in the sidebar. Click Generate New Keypair to get a new signing key. Save the private key somewhere secure. You will not be able to see it again.

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2. Create signed user JWT tokens in your app backend

In your app backend, generate a JWT token for each user and make it available to the frontend. If your frontend is a client-side javascript application, this likely means creating an API endpoint that the frontend can use to fetch a user JWT token. Never expose the signing key directly to the frontend. Use the following JWT header claims:
  • alg: The algorithm used to sign the JWT. Must be RS256.
  • typ: The type of token. Must be JWT.
{
  "alg": "RS256",
  "typ": "JWT"
}
Use the following JWT payload claims sub, iat, exp, project_id.
  • project_id: Your Strata project ID. This can be found on the Settings page
  • sub: The JWT subject. This is your primary identifier for the user.
  • iat: The JWT issued at timestamp in seconds since the Unix epoch. Typically the current time.
  • exp: The JWT expiration timestamp in seconds since the Unix epoch (must be later than the iat claim).
{
  "project_id": "your_project_id",
  "sub": "user_or_company_id",
  "iat": 1749602274,
  "exp": 1749602290
}
You can optionally include an external_id claim. If provided, it will be used as the user / company identifier and takes precedence over the sub claim. Here is a sample implementation with a Next.js API endpoint: 
import { NextResponse } from "next/server";
import jwt from "jsonwebtoken";

/*
 * Generates a user JWT token for the Strata SDK
 */
export async function POST() {
  const projectId = process.env.STRATA_PROJECT_ID;
  const currentTime = Math.floor(Date.now() / 1000);
  const payload: jwt.JwtPayload = {
    sub: "user_or_company_id",
    project_id: process.env.STRATA_PROJECT_ID,
    iat: currentTime,
  };

  const privateKey = process.env.PRIVATE_KEY;
  const token = jwt.sign(payload, privateKey, {
    algorithm: "RS256",
    expiresIn: "1h",
  });

  return NextResponse.json({ token });
}

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3. Prompt a user to authorize your integration

To start the authorization flow for your integration, call strata.authorize with a signed user jwt. The function call returns a Promise that resolves when the user successfully completes the auth flow. It fails with an error if the authorization fails or the user closes the window without authorizing your app. 
import Strata from "@connectstrata/strata-frontend-sdk";

const strata = new Strata();

strata.authorize(jwtToken, "slack");
Some integrations require additional parameters. For example, Shopfiy requires the merchant’s shop subdomain. You can provide additional custom parameters to the authorize call: 
strata.authorize(jwtToken, "shopify", {
  customParams: {
    shop: "connectstrata.myshopify.com",
  },
});