How to add mobile keys to your app

1// npm install seam
2// Set SEAM_API_KEY and SEAM_ACS_ENTRANCE_ID for a supported entrance.
3import { Seam } from "seam"
4
5const seam = new Seam()
6const entranceId = process.env.SEAM_ACS_ENTRANCE_ID
7if (!entranceId) throw new Error("Set SEAM_ACS_ENTRANCE_ID")
8const startsAt = new Date()
9const endsAt = new Date(startsAt.getTime() + 30 * 24 * 60 * 60 * 1000)
10
11const accessGrant = await seam.accessGrants.create({
12  user_identity: { full_name: "Jane Doe", email_address: "jane@example.com" },
13  acs_entrance_ids: [entranceId],
14  requested_access_methods: [{ mode: "mobile_key" }],
15  starts_at: startsAt.toISOString(),
16  ends_at: endsAt.toISOString(),
17})
18
19// Poll at two-second intervals, at most 30 times.
20let mobileKey
21for (let attempt = 0; attempt < 30; attempt++) {
22  const methods = await seam.accessMethods.list({
23    access_grant_id: accessGrant.access_grant_id,
24  })
25  mobileKey = methods.find((method) => method.mode === "mobile_key")
26  if (mobileKey?.is_issued) break
27  await new Promise((resolve) => setTimeout(resolve, 2000))
28}
29if (!mobileKey?.is_issued) {
30  throw new Error("Access method is not issued yet. Check its errors and retry later.")
31}
32
33const clientSessionToken = mobileKey.client_session_token
34if (!clientSessionToken) throw new Error("Client session token is not available yet")
35// Return this token only to the authenticated member's app.
36// Initialize the iOS or Android Seam mobile SDK with the token.
37
38const instantKeyUrl = mobileKey.instant_key_url
39if (!instantKeyUrl) throw new Error("Instant Key URL is not available yet")
40// Your app sends instantKeyUrl with its own SMS or email provider.
41// Deliver it only to the member who owns this grant.