Introduction to the blueprint API reference
This API reference provides auto-generated documentation for all of the supported blueprint functions and events. It also indicates what functionality is not currently available.
This reference includes all blueprint nodes auto-generated from the engine source code. Some functions and events are not supported by Epic Online Services, and can only be used with a local platform subsystem that implements them.
The Free Edition only allows using blueprint nodes to interact with Epic Online Services; calls to "Get Named Subsystem" will fail with an error. If you need to access platform-specific online functionality in blueprints, you'll need to upgrade to the Paid Edition.
Accessing a subsystem
To access the subsystem for Epic Online Services, you can just use (for example) the "Online Achievements Subsystem" blueprint node.
If you need to access a platform-specific subsystem for achievements, you could use the "Get Named Achievements Subsystem" blueprint node off the "Online Subsystem" node.
Subsystems
| Subsystem | Coverage (%) |
|---|---|
| Achievements | 100% |
| Avatar | 100% |
| Entitlements | 100% |
| External UI | 89% |
| Friends | 95% |
| Game Activity | 89% |
| Identity | 88% |
| Leaderboards | 100% |
| Lobby | 95% |
| Message Sanitizer | 100% |
| Party | 78% |
| Presence | 75% |
| Purchase | 89% |
| Session | 98% |
| Stats | 100% |
| Store V2 | 100% |
| Title File | 100% |
| User | 100% |
| User Cloud | 90% |
| Voice Admin | 100% |
| Voice Chat | 83% |
| Voice Chat User | 85% |