POSThttps://core-api.heysadie.ai/whatsapp/onboarding-sessions

Start onboarding session

Start WhatsApp calling onboarding for one of the tenant's phone numbers. Returns a **single-use, tenant-bound, 15-minute** `signupUrl` (a Sadie-hosted page wrapping Meta's Embedded Signup). Send the end customer to that URL; they authenticate with Meta and share their WhatsApp Business Account (WABA). Everything after that (attaching the number, capturing the registration code, enabling calling) happens server-side. **The customer never sees a phone-number or OTP screen.** ### Idempotency Pass an `Idempotency-Key` header. Re-sending the same key for the same tenant returns the existing session (same `sessionId`), not a new one. Two concurrent requests with the same key resolve to the one session (no duplicate). A second **in-progress** onboarding for the same number (different key) is rejected with `409 WHATSAPP_ONBOARDING_IN_PROGRESS`. ### Progress Poll `GET /whatsapp/onboarding-sessions/{id}` or subscribe to the reseller webhooks (`whatsapp.onboarding.tier_pending | completed | failed`, `whatsapp.calling.live`). The Meta consent popup shows **"Sadie"**: Meta does not white-label Tech Providers. ## Reseller webhooks (onboarding lifecycle) Sadie POSTs onboarding lifecycle events to the reseller's configured server URL (`tenants.server_url`) as they happen. Configure that URL to receive them; this is the outbound contract you build a receiver for. ### Event types - `whatsapp.onboarding.tier_pending`: number verified & registered but below Meta's calling messaging-limit tier; parked until the portfolio limit is raised. - `whatsapp.onboarding.completed`: calling enabled on the number. - `whatsapp.onboarding.failed`: terminal failure; branch on `data.reason`. - `whatsapp.calling.live`: display name approved and calling is live end-to-end. ### Payload (JSON body) ```json { "event": "whatsapp.onboarding.completed", "sessionId": "0194cc1a-eea6-7351-903d-9dcf479e14ae", "tenantId": "0194cc1a-eea6-7351-903d-9dcf479e14ae", "phoneNumber": "+15555550123", "timestamp": "2026-07-15T18:00:00.000Z", "data": { "messagingLimitTier": "TIER_2K" } } ``` `data` is event-specific and open (new keys may be added). On `failed`, `data.reason` is set; `otp_request_limit` also carries `data.retryAfterHours`. ### Signature (verify EVERY delivery) Each POST carries two headers: - `X-Sadie-Signature: sha256=<hex>`: HMAC-SHA256 of the **raw request body bytes** (verify BEFORE JSON-parsing), keyed by your per-tenant shared secret (the same `client-server-secret` used for end-of-call reports). - `X-Sadie-Delivery: <uuid>`: the delivery id. Verify by recomputing `"sha256=" + hex(hmacSHA256(secret, rawBody))` and comparing with a constant-time equality check. Reject on mismatch. ### Delivery & replay-idempotency Delivery is at-least-once: a non-2xx or timeout is retried up to 5× with exponential backoff (~10s per-attempt timeout). **All retries of one event reuse the same `X-Sadie-Delivery` id**: dedupe on it (treat it as the idempotency key) so a retried delivery isn't processed twice. Respond `2xx` promptly to stop retries. Events may also arrive out of order; treat `timestamp` as the ordering hint and the session `status` as authoritative. ### `data.reason` failure codes (on `whatsapp.onboarding.failed`) - `attach_failed` / `attach_failed:<metaCode>` (e.g. `attach_failed:133016`) - `otp_request_limit` (with `data.retryAfterHours`) - `waba_mismatch` - `voice_routing_missing` - `token_revoked` - `name_rejected` - `authorization_failed` - `register_failed` - `request_code_failed` - `otp_failed` - `invalid_phone_number` - `stalled` (crashed in `authorized`, before any verification call) - `otp_call_timeout` (stuck in `verifying` past its TTL: the call was placed but never completed) - `whatsapp_waba_owned_by_another_tenant`

curl -X POST "https://core-api.heysadie.ai/whatsapp/onboarding-sessions" \
  -H "Authorization: ApiKey YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tenantId": "0195f1e2-0000-7000-8000-000000000000",
    "phoneNumber": "string"
  }'