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Webhooks

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Learn how to configure webhooks to get alerts on EAS Build and EAS submit completion.

EAS can alert you as soon as your build or submission is completed via a webhook. Webhooks need to be configured per project. For example, if you want to be alerted for both @johndoe/awesomeApp and @johndoe/coolApp, in each directory, run the command:

Terminal
- eas webhook:create

After running it, you'll be prompted to choose the webhook event type (unless you provide the --event BUILD|SUBMIT parameter). Next, provide the webhook URL (or specify it with the --url flag) that handles HTTP POST requests. Additionally, you'll have to input a webhook signing secret, if you have not already provided it with the --secret flag. It must be at least 16 characters long, and it will be used to calculate the signature of the request body which we send as the value of the expo-signature HTTP header. You can use the signature to verify a webhook request is genuine.

EAS calls your webhook using an HTTP POST request. All the data is passed in the request body. EAS sends the data as a JSON object. If the webhook responds with an HTTP status code outside of the 200-399 range, delivery will be attempted a few more times with exponential back-off.

Additionally, we send an expo-signature HTTP header with the hash signature of the payload. You can use this signature to verify the authenticity of the request. The signature is a hex-encoded HMAC-SHA1 digest of the request body, using your webhook secret as the HMAC key.

If you want to test the above webhook locally, you can use a service such as ngrok to forward localhost:8080 via a tunnel and make it publicly accessible with the URL ngrok gives you.

You can always change your webhook URL and/or webhook secret by running command:

Terminal
- eas webhook:update --id WEBHOOK_ID

You can find the webhook ID by running the command:

Terminal
- eas webhook:list

If you want us to stop sending requests to your webhook, run the command below and choose the webhook from the list:

Terminal
- eas webhook:delete

Webhook payload

Build webhook payload

The build webhook payload may look as the example below:

{
  "id": "147a3212-49fd-446f-b4e3-a6519acf264a",
  "accountName": "dsokal",
  "projectName": "example",
  "buildDetailsPageUrl": "https://expo.dev/accounts/dsokal/projects/example/builds/147a3212-49fd-446f-b4e3-a6519acf264a",
  "parentBuildId": "75ac0be7-0d90-46d5-80ec-9423fa0aaa6b", // available for build retries
  "appId": "bc0a82de-65a5-4497-ad86-54ff1f53edf7",
  "initiatingUserId": "d1041496-1a59-423a-8caf-479bb978203a",
  "cancelingUserId": null, // available for canceled builds
  "platform": "android", // or "ios"
  "status": "errored", // or: "finished", "canceled"
  "artifacts": {
    "buildUrl": "https://expo.dev/artifacts/eas/wyodu9tua2ZuKKiaJ1Nbkn.aab", // available for successful builds
    "logsS3KeyPrefix": "production/f9609423-5072-4ea2-a0a5-c345eedf2c2a"
  },
  "metadata": {
    "appName": "example",
    "username": "dsokal",
    "workflow": "managed",
    "appVersion": "1.0.2",
    "appBuildVersion": "123",
    "cliVersion": "0.37.0",
    "sdkVersion": "41.0.0",
    "buildProfile": "production",
    "distribution": "store",
    "appIdentifier": "com.expo.example",
    "gitCommitHash": "564b61ebdd403d28b5dc616a12ce160b91585b5b",
    "gitCommitMessage": "Add home screen",
    "runtimeVersion": "1.0.2",
    "channel": "default", // available for EAS Update
    "releaseChannel": "default", // available for legacy updates
    "reactNativeVersion": "0.60.0",
    "trackingContext": {
      "platform": "android",
      "account_id": "7c34cbf1-efd4-4964-84a1-c13ed297aaf9",
      "dev_client": false,
      "project_id": "bc0a82de-65a5-4497-ad86-54ff1f53edf7",
      "tracking_id": "a3fdefa7-d129-42f2-9432-912050ab0f10",
      "project_type": "managed",
      "dev_client_version": "0.6.2"
    },
    "credentialsSource": "remote",
    "isGitWorkingTreeDirty": false,
    "message": "release build", // message attached to the build
    "runFromCI": false
  },
  "metrics": {
    "memory": 895070208,
    "buildEndTimestamp": 1637747861168,
    "totalDiskReadBytes": 692224,
    "buildStartTimestamp": 1637747834445,
    "totalDiskWriteBytes": 14409728,
    "cpuActiveMilliseconds": 12117.540078,
    "buildEnqueuedTimestamp": 1637747792476,
    "totalNetworkEgressBytes": 355352,
    "totalNetworkIngressBytes": 78781667
  },
  // available for failed builds
  "error": {
    "message": "Unknown error. Please see logs.",
    "errorCode": "UNKNOWN_ERROR"
  },
  "createdAt": "2021-11-24T09:53:01.155Z",
  "enqueuedAt": "2021-11-24T09:53:01.155Z",
  "provisioningStartedAt": "2021-11-24T09:54:01.155Z",
  "workerStartedAt": "2021-11-24T09:54:11.155Z",
  "completedAt": "2021-11-24T09:57:42.715Z",
  "updatedAt": "2021-11-24T09:57:42.715Z",
  "expirationDate": "2021-12-24T09:53:01.155Z",
  "priority": "high", // or: "normal", "low"
  "resourceClass": "android-n2-1.3-12",
  "actualResourceClass": "android-n2-1.3-12",
  "maxRetryTimeMinutes": 3600 // max retry time for failed/canceled builds
}
Submit webhook payload

The submit webhook payload may look as the example below:

{
  "id": "0374430d-7776-44ad-be7d-8513629adc54",
  "accountName": "dsokal",
  "projectName": "example",
  "submissionDetailsPageUrl": "https://expo.dev/accounts/dsokal/projects/example/builds/0374430d-7776-44ad-be7d-8513629adc54",
  "parentSubmissionId": "75ac0be7-0d90-46d5-80ec-9423fa0aaa6b", // available for submission retries
  "appId": "23c0e405-d282-4399-b280-5689c3e1ea85",
  "archiveUrl": "http://archive.url/abc.apk",
  "initiatingUserId": "7bee4c21-3eaa-4011-a0fd-3678b6537f47",
  "cancelingUserId": null, // available for canceled submissions
  "turtleBuildId": "8c84111e-6d39-449c-9895-071d85fd3e61", // available when submitting a build from EAS
  "platform": "android", // or "ios"
  "status": "errored", // or: "finished", "canceled"
  "submissionInfo": {
    // available for failed submissions
    "error": {
      "message": "Android version code needs to be updated",
      "errorCode": "SUBMISSION_SERVICE_ANDROID_OLD_VERSION_CODE_ERROR"
    },
    "logsUrl": "https://submission-service-logs.s3-us-west-1.amazonaws.com/production/submission_728aa20b-f7a9-4da7-9b64-39911d427b19.txt"
  },
  "createdAt": "2021-11-24T10:15:32.822Z",
  "updatedAt": "2021-11-24T10:17:32.822Z",
  "completedAt": "2021-11-24T10:17:32.822Z",
  "maxRetryTimeMinutes": 3600 // max retry time for failed/canceled submissions
}

Webhook server

Here's an example of how you can implement your server:

server.js
const crypto = require('crypto');
const express = require('express');
const bodyParser = require('body-parser');
const safeCompare = require('safe-compare');

const app = express();
app.use(bodyParser.text({ type: '*/*' }));
app.post('/webhook', (req, res) => {
  const expoSignature = req.headers['expo-signature'];
  // process.env.SECRET_WEBHOOK_KEY has to match SECRET value set with `eas webhook:create` command
  const hmac = crypto.createHmac('sha1', process.env.SECRET_WEBHOOK_KEY);
  hmac.update(req.body);
  const hash = `sha1=${hmac.digest('hex')}`;
  if (!safeCompare(expoSignature, hash)) {
    res.status(500).send("Signatures didn't match!");
  } else {
    // Do something here.  For example, send a notification to Slack!
    // console.log(req.body);
    res.send('OK!');
  }
});
app.listen(8080, () => console.log('Listening on port 8080'));