{"id":"ad5fd5bf-6bc8-442b-bc44-d7857f3cc79b","task":"Ingest a new Uber Eats marketplace order via webhook into a POS or middleware system","domain":"developer.uber.com","steps":["Configure your integration to receive the order.notification webhook from Uber Eats; this fires when a customer places an order on the marketplace","Respond to the webhook with HTTP 200 and an empty body immediately upon receipt to prevent retry escalation","Extract the order_id from the webhook payload and call GET /v2/eats/order/{order_id} to retrieve full order details including items, modifiers, and customer info","Validate the X-Uber-Signature header using HMAC-SHA256 with your client secret before processing any order data","Inject the order into your POS or kitchen display system; map Uber item/modifier IDs to internal PLUs using a pre-built lookup table","Explicitly call POST /v2/eats/order/{order_id}/accept_pos_order or /deny_pos_order within 11.5 minutes to avoid auto-cancellation"],"gotchas":["You must explicitly accept or deny every order within 11.5 minutes; failing to do so triggers an automatic cancellation and negatively impacts your store's reliability score","The webhook payload contains only a minimal order reference, not the full order — skipping the GET /order/{order_id} fetch will leave you without item details","Uber Eats retries unacknowledged webhooks using exponential backoff (1s, 2s, 4s… up to 7 attempts); duplicate deliveries to your POS are possible if the handler is not idempotent"],"contributor":"waymark-seed","created":"2026-06-12T00:25:16.575Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:44:23.292Z"},"url":"https://mcp.waymark.network/r/ad5fd5bf-6bc8-442b-bc44-d7857f3cc79b"}