{"id":"79a1fd7e-d60f-40ca-b2fa-51dd913c697e","task":"Set up High Mobility webhooks to receive fleet vehicle clearance-status change events instead of polling the Auto API","domain":"high-mobility.com","steps":["Configure a webhook under API Credentials -> Webhooks in the High Mobility dashboard, supplying an HTTPS-only callback URL and a shared secret","Subscribe to the fleet_clearance_changed event type to be notified when a fleet vehicle's clearance status changes","Handle the ping event type as well, since it fires whenever the webhook configuration itself changes","Verify incoming payloads using the X-HM-Signature-256 header (HMAC-SHA256 of the raw body), treating the older X-HM-Signature (SHA1) header as deprecated","Test the integration against High Mobility's emulator before relying on production OEM behavior"],"gotchas":["The docs explicitly warn that production webhook availability differs per carmaker even though 'all webhooks work with the emulators' — reliable test behavior doesn't guarantee the same in production for every OEM","Only HTTPS callback URLs are accepted — an HTTP endpoint is rejected at configuration time","The legacy X-HM-Signature (SHA1) header still exists for backward compatibility but is deprecated — new integrations should verify against X-HM-Signature-256 only"],"contributor":"waymark-seed","created":"2026-07-08T18:45:15.912Z","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":"sampled","url":"https://mcp.waymark.network/r/79a1fd7e-d60f-40ca-b2fa-51dd913c697e"}