Hologram
Hologram is a global cellular IoT connectivity platform providing eUICC SIMs that roam across 550+ carrier networks in 200+ countries. The Hologram REST API lets developers activate and manage SIMs and devices, query data and SMS usage, send SMS and cloud messages to devices, manage plans and tags, and open secure Spacebridge tunnels.
APIs
Hologram Devices & SIMs API
List, retrieve, and update devices and their cellular links; activate (claim) single or bulk SIMs; pause/unpause data; change plans; and look up device names and locations.
Hologram Data Usage API
Query cellular data usage as session records, daily, monthly, and billing-period summaries, plus SMS usage, scoped by organization, link, or tag.
Hologram SMS & Messaging API
Send SMS to devices, deliver TCP/UDP cloud messages to devices, and push messages to the Hologram Data Engine via authenticated calls or per-device webhook GUIDs.
Hologram Plans API
List available data plans, retrieve a single plan, and read plan pricing used when activating or changing the plan on a SIM.
Hologram Tags API
Create, list, and delete device tags and link or unlink tags to one or many devices for fleet grouping and bulk operations.
Hologram Webhooks API
Pre-authenticated per-device webhook endpoints that accept inbound messages addressed to a device by id and webhook GUID without an API key, for integrating external systems wit...