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Connect your Expo project once and every new EAS build lands in Revyl automatically. No uploads, no manual steps. Every passing build is ready to test the moment EAS finishes it.
For a conceptual overview of how Expo Auto Sync works, see Expo Auto Sync in the Apps section.

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How It Works

  1. You give Revyl an Expo access token (stored encrypted)
  2. You link an EAS project to one or more Revyl apps (one Android, one iOS, or both)
  3. Revyl automatically registers a webhook on your EAS project using the token
  4. EAS fires the webhook to Revyl on every completed build
  5. Revyl filters the build, downloads the artifact, and creates a new Build inside the linked app
Builds auto-synced this way get tagged with source: expo and an auto-generated version like expo-1.2.0-ios-a1b2c3d4. Native changes get a -native suffix so you can tell at a glance what changed.

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Requirements

1

Expo access token

Create a Robot User access token at expo.dev/settings/access-tokens. Robot users are the recommended pattern for CI/integration tokens. Personal tokens work but aren’t ideal.The Robot User needs Developer role or higher on the EAS project. Read-only tokens can’t create webhooks and will fail at registration.
2

EAS project ID

Grab your project’s UUID from the Expo Dashboard or app.json. It must be a valid UUID. The human-readable @owner/slug form is not accepted.
3

Simulator/emulator builds

Revyl runs on cloud simulators and emulators — your EAS profile must produce compatible binaries. See Artifact Requirements for the full rules.
  • iOS: "simulator": true on the profile in eas.json
  • Android: .apk (not .aab) that includes x86_64 and is debuggable

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Setup

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1. Create an Expo Robot User Token

  1. Sign in to expo.dev
  2. Go to Access Tokens
  3. Click Create Token
  4. Give it a descriptive name like revyl-auto-sync
  5. Make sure the Robot has Developer role or higher on the EAS project
  6. Copy the token immediately (it won’t be shown again)

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2. Configure Expo in Revyl

  1. In Revyl, go to Integrations > Expo
  2. Paste your Robot User access token and save
  3. Click Add EAS Project
  4. Enter the EAS Project ID (UUID), a display name, and pick which Revyl Android and/or iOS apps it maps to
  5. Enable Auto-sync and save
Revyl registers the webhook on your EAS project in the background. Nothing else to do.

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Alternative: From the App Creation Flow

When creating an app, click Connect to Expo instead of uploading a file. The flow prompts for the token if you don’t have one, then shows a project picker. Revyl auto-selects the latest compatible build (non-production, non-expired, matching platform) and imports it as your first build. Future builds sync automatically.

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What Gets Synced

On each EAS BUILD event with status=finished, Revyl:
  1. Verifies the webhook signature (HMAC-SHA1 expo-signature)
  2. Matches the build to an org via the signature
  3. Filters out:
    • Production profiles (filtered by name)
    • Expired artifact URLs
    • iOS builds without "simulator": true
    • .aab Android builds
  4. Downloads the artifact using your Expo token
  5. Creates a new build in the linked Revyl app, comparing its fingerprintHash to the previous build to detect native changes

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Managing the Integration

  • Update the token: go to Integrations > Expo, paste a new token, save. Existing builds stay; future syncs use the new token.
  • Disconnect: clear the token field and save. Revyl stops syncing and removes the webhook from EAS. Existing builds remain and can still be run against.
  • Remap a project: connecting an EAS project to a new app reassigns the platform binding. The old app stops auto-syncing.

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Gotchas

  • One EAS project maps to one app per platform. Remapping reassigns the binding.
  • Production profiles are filtered on purpose. Revyl doesn’t import production builds via auto-sync. Upload them manually if you need to test production artifacts.
  • If webhook registration fails, the Robot User probably has read-only access. The Robot needs Developer role or higher on the EAS project.
  • If builds aren’t showing up: check simulator: true is set on your iOS profile, that you’re building .apk not .aab on Android, and that the artifact URL hasn’t expired.
  • Auto-sync stops if the token is removed. Disabling auto-sync also deletes the webhook from EAS automatically.
Use a dedicated profile that produces simulator-compatible builds for Revyl: 
{
  "build": {
    "revyl": {
      "distribution": "internal",
      "ios": {
        "simulator": true
      },
      "android": {
        "buildType": "apk"
      }
    }
  }
}
Then build with: 
eas build --platform ios --profile revyl
eas build --platform android --profile revyl