Transport and Artifact Hosts
These hosts move information out of the state machine: to user-facing transports, durable artifact files, or generated media.
| Handler | Use it for | Reference |
|---|---|---|
host.transport.post | Post a message to a registered transport. | ../hosts.md#hosttransportpost |
host.artifacts_dir | Write markdown or emit media artifacts under the artifact root. | ../hosts.md#hostartifacts_dir |
host.slidey.render | Render a JSON scene spec to MP4, PDF, or HTML. | ../hosts.md#hostslideyrender |
host.contact_sheet | Build a PNG contact sheet from image frames. | ../hosts.md#hostcontact_sheet |
host.video.frame | Extract one PNG frame from a video. | ../hosts.md#hostvideoframe |
For the transport model itself, see ../transports.md. For trace-side artifact events, see ../../tracing/trace-format.md.